Gas Coming Out Of Exhaust 2 Stroke Outboard

Failure of the Water PumpOne of the most common reasons behind overheating in outboard motors isfailure of the water pumps. It has run fine for years, is kept clean and fresh water cleansed after each use. The result is improved maneuverability and performance. If your donut gets some gas in it, it will not float well causing excess fuel to run into your motor and out the exhaust, intake and other places as well. Ok so heres the deal I first notice the oil coming from the weep hole on the lower unit about two summers ago so I removed the lower unit to 1. What Color Is The Smoke & What Does it Mean. I have experienced this since I have two kinds of motorcycles, one is a 2T (15 years old) the other is a 4T (8 years old) and the 4T eats more gas than my 2T motorcycle. Normal fuel goes in the tanks. A 2-stroke engine is simpler (no camshaft, valves or valve gear), so by extension that should make it easier to work out issues with poor performance. New head gasket and valve cover gasket. 9 4 stroke yamaha 4 stroke dirt bikes yamaha 60hp 4 stroke yamaha 4 stroke oil yamaha yz 250 4 stroke yamaha 4 stroke 450 yamaha 40 hp 4 stroke yamaha 4 stroke motorcycles yamaha 4 stroke outboard yamaha 4 stroke props yamaha 4 stroke outboard problems yamaha 4 stroke motor yamaha banshee 4 stroke 150. If you buy an aftermarket rebuilding kit, NEVER rely on the generic specification sheets which come in the kits. Pop Quiz: The owner of a 30' powerboat hops aboard his boat one day to go for a cruise, but his inboard V-8 engine is slow to start. Heres the thing. ) Jetted too rich - w. gas tank, provides approximately 1. I always run 89 octane gas and mix 2 bottles of Stihl 2 cycle oil with exacttly 2 gallons of gas measured out by the gas station pump. See comments and ratings for 4-Stroke-4--HP-38cc-OUTBOARD-Motor-Boat-Engine-Air-Cooling-System-US and all other unique products, all written by eBay members!. I have water coming out of the exhaust holes in the back of my 225 Evinrude outboard motor. 5-hp portable outboard is the smallest motor on our roster, yet, it has some of the biggest news. In the manifold, the oil will mix with the gas and air and make its way into the bike's engine. 9 4 stroke yamaha 4 stroke dirt bikes yamaha 60hp 4 stroke yamaha 4 stroke oil yamaha yz 250 4 stroke yamaha 4 stroke 450 yamaha 40 hp 4 stroke yamaha 4 stroke motorcycles yamaha 4 stroke outboard yamaha 4 stroke props yamaha 4 stroke outboard problems yamaha 4 stroke motor yamaha banshee 4 stroke 150. When I went to the back to look a it I noticed that it looked like water was coming out of the lowest spark plug. Cleaned carbon buildup which was not too bad. Only a little bit mind you, but was wondering why. Single engine: Position the outboard motor at the center of the transom. and you may even get exhaust gas coming out of the pee hole which is exactly what happened in my case. When it does start it will only run for about 5 seconds and then it dies. I have done my time on 2 strokes. its notshing wrong with the motor as all 2 strokes do it. Johnson and Evinrude carbureted 2-stroke outboards since 1964 require a 50:1 fuel to oil mixture (2%) on engines without an automatic oiling system - 6 gallons of gas to 1 pint of outboard oil. iow, the fuel gases explode out of the chamger into the exhaust system. end, it operates under fluid pressure within a smooth walled cylinder. A 2-stroke engine is simpler (no camshaft, valves or valve gear), so by extension that should make it easier to work out issues with poor performance. The round component which moves in a cylinder to create, or to react to, pressure in the cylinder. It becomes most apparent when the engine is off and tilted forward. It's possible to bend/break stuff inside if there is even a teeeeeensy bit more liquid in the cylinder than the volume of the combustion chamber at TDC. If the leak is severe, it might even come out of the exhaust pipe directly as you run the car, which would mean the dark liquid you observed in step 1 is actually oil and not a soot-water mix. On earlier designs where the keyway in the shaft traps the key, and it is also stuck in the impeller, it is necessary to drill out the brass key to free the impeller. Any ideas of what this could be?? Since you just posted this, I'm guessing you ran it with the muffs on with the engine having no boat weight load on it. Achieving the best idle at under 2 turns indicates the need for a smaller idle jet. 2004 Mercury Outboard 90 HP 4 Stroke Engine Cowling Top Cover. Valve guides control the gas flows into and out of the engine. 5hp 2 stroke outboard blocked cooling system? Cooling water has stopped coming out of the telltale My Mercury 2. Thanks alot guys and gals. This SOHC two-cylinder four stroke delivers a nice balance of power, performance and portability for jon boats and inflatables. 5hp Heavy Duty Outboard Motor Boat Engine. The oil mixed with the gas does not adequately lubricate the engine. What Color Is The Smoke & What Does it Mean. If the vehicle is exhibiting any of these symptoms, the spark plugs should be inspected immediately. I´ve not tested it beyond that. Which leads me to believe it's coming out the exhaust. Mechanically, the 2 stroke is a simpler machine and most of the time you can do repairs yourself. Invented in the early years of the 20th century, outboards brought the same freedom to small boats that gasoline engines brought to cars. Re: Fuel leak through the exhaust? 1966 Johnson 2-stroke It sounds like it might be running a little rich, not uncommon for those old engines to have to run rich and leave a sheen on the water. If you were running at low idle for a long time and the oil is black or burned looking it may just be unburned two stroke oil coming out the exhaust after sitting. I'm not sure if it's an exhaust outlet or what, but I'm sure you all know the hole I'm talking about. mix 40:1 if you are MX race practice or MX racing (alot of high rpm or held in the upper range rpm for extended periods). all it is oil scabaving. Thanks Peter!! To help keep your engine in tip-top condition for years to come, it is important that you “winterize” your outboard for off-season storage. Did you know that unleaded petrol does not store for as long as standard leaded petrol - so keep it fresh. As the number of vehicles on roads is on a rise, so is the traffic. After cleaning the fuel lines, fuel filters, and inspecting the carbs it reluctantly started up with a little bit of starter fluid. It’s formulated with an extra level of performance additives to protect outboard engines under the most severe operating conditions. i will change out the fuel separator filter this weekend to see if ther is any water in it. Disconnect the gearshift rod coupling. Backed by decades of marine power innovation and product leadership, Mercury FourStroke outboards (2. I notice my center and bottom carbs have oil on them around the bowl. Thanks Peter!! To help keep your engine in tip-top condition for years to come, it is important that you “winterize” your outboard for off-season storage. It's possible to bend/break stuff inside if there is even a teeeeeensy bit more liquid in the cylinder than the volume of the combustion chamber at TDC. OUTBOARD WORKSHOP SERVICE MANUAL ALL MOTORS 2 TO 225 HP YEARS 1988 TO 2003 to maintaining and repairing your Suzuki 2-stroke outboard. Not all of us can afford a new boat/outboard. Valve and port diesel two stroke engines. look for carbon or oil on the plug. At this weight the outboard is very portable and it only takes one person to handle. Clean Used 2004 Mercury 25 HP 2 Cylinder 2 Stroke 15" Tiller Outboard Motor. Failure of the Water PumpOne of the most common reasons behind overheating in outboard motors isfailure of the water pumps. Almost all 2 stroke engines that are run on a low rpm while trolling have a problem with unburnt oil building up in the exhaust housing no matter what oil you use. We equipped the truck with the supercrew cab, 61/2 ft bed, max tow package, max payload package and 20 inch wheels which added heavier rear springs. Not only does the situation mean that raw gasoline is not being consumed by the engine combustion process, it also creates a risky situation since a hot engine can ignite gasoline outside of the cylinder. 5 and it took me a long time to figure out. The 200 seems to only be spittin out the prop, and is getting warm on the water unless we kick her in the rear and then it cools down but dont take long at low to mid to get warm again. 16 to 1 ratio with a brand new engine and 25 to 1 with a used engine. Discussion in 'Outboards' started by lenwoodbluz, especially on a 2 stroke. Now from what I think I was told (have a shocker memory) and my missus says definitely yes that it is what was said (and I just want to be sure hence why I'm here) is that I don't have to actually mix the oil and fuel myself into the tanks. (2) If the fuel valve is defective, replace it. The older a 4 stroke motorcycle the more it consumes a lot of gas than a 2 stroke. When I check the valve clearance at 1/4" past TDC I have the correct clearance. First, you should know that there are two types of timing in an engine: cam timing and ignition timing. I took the boat for a run before and it runs mint. Mercury Outboard Parts and Mercury Marine Motors are among the most popular outboard motors for sale today. This makes it lighter and cheap to manufacture. British Seagull Outboard Technical Tips. I have a 78 evenrude 115 outboard and there is oil running out of the exhaust holes and out from behind the prop. Let's take a closer look at these handy machines and find out how they work! Photo: Outboard motors are perfect for powering a RIB (rigid inflatable boat) like this. The built-in 32 oz. The gas engine’s stiff SOHC valvetrain with roller-rocker shafts enables an intake- and exhaust-port layout that optimizes airflow, helping it produce plenty of torque down low. ( guessing its a overflow tube) Its doing this both running and not running and it runs good. The injection was a way to try and take the guess work out of operation of a 2 stroke street legal motorcycle for everyday use. 2-stroke Mariner outboard. Any lubrication has to come from the fuel, which is a mixture of gas and oil. Why does my 4-stroke outboard oil level keep rising? I never add any. Older 2 Stroke Outboards have been running just fine on pre-mixed fuel and oil since the Outboard was invented. This unit sounds like it was starving for fuel (as Jay pointed out. Some people have jet units to drive their boats, but they have cost, weight and maintenance problems that keep them out of the reach of most village people. What confuses me is why so few 2-stroke diesels are available. I have a 1999 100HP Yamaha 4 stroke outboard. For other non carburated 2-Strokes it can cause a high idle. The next weekend it floods out at full throttle and is blowing gas out the exhaust. Clean Used 2004 Mercury 25 HP 2 Cylinder 2 Stroke 15" Tiller Outboard Motor. Does the combination of the “Six Cycle Hybrid Steam Engine” and my hybrid steam engine have merit? Bear in mind that this engine should be able to be made from a modified standard V-8 engine. A two-stroke engine with gas leaking from the engine is a serious problem. Decarbing is generally not necessary on 4-stroke motors as they don't build up nearly as much carbon as 2-stroke motors do. Had around 150,000 when I bought it. Time for a oil change if it does. i corrected the throttle and stop cables which were bad off but of course. MID-RANGE 25-100HP. ) Gas mixed with too much premix - although we mix it 40:1 with Maxima 927 or whatever thats called. For this reason, outboard engines wear out faster, absorb more heat over a longer period and work under a constant load. Find out more. (I don't know if it smokes at higher speeds. This is part of a 2 stroke it's carbon in the exhaust ,Get some outboard decarbon spray an follow the instructions It will make a mess so don't do it in your drive way. It was not this white before I took it in. It turned out that having twice as many power strokes meant the time. We equipped the truck with the supercrew cab, 61/2 ft bed, max tow package, max payload package and 20 inch wheels which added heavier rear springs. Gas leaking out of exhaust pipe I recently bought a used Suzuki Vinson 500 to use on my hunting lease in Alabama. I have a nice Tohatsu 3. Generally it is due to exhaust restriction or wear on the piston/ring. A long-rumoured 400-450hp monster V8 appears to be just that, nothing more than a rumour. hooked the obd 2 scanner up & showed fuel pressure sensor & egr valve was bad. The Symbol for Cleaner Marine Engines Means: Cleaner Air and Water - for a healthier lifestyle and environment. Its hard to show what i did here with just pictures. It still runs horrible with a good carb. I also agree, that if the water tube cracked that injecting cold water into the exhaust hsg shouldn't create steam. while you are riding, there is actually a fine mist of oil that is being shot out of the exhaust. 4- Make sure the impeller is in good condition. This can make it either difficult or impossible to start, depending on the severity of the situation. How could this possibly work? How could the engine ever NOT blow its combustion mixture out of the carb?. I know a lot of folks here are running Yamaha 25 2 strokes or have in the past. There was a very strong gas odor coming from behind the boat, but none in the engine compartment. Find yours at Lake Time Boats in Winter, WI. it could just be running out of your carborator and down the inside and seeming like its from the exhaust. It was the 3-cylinder, 814cc 55hp, the first-ever OMC motor to feature a through-prop exhaust and the first motor to adopt the slimline, straight-edged external profile that it (and. Are you 100% sure there is gas coming out of the exhaust and not a mixture of gas/oil??? The gas/oil mix would be expected from a blown headgasket (the oil gets in, mixes with some gas, and that crap isn't burned, so it gets to the exhaust). I have a 30hp 2-cycle Evinrude outboard. Evinrude Johnson XD50 2 Cycle Outboard Oil. Intake valve was. We showcase a curated collection of products at reasonable sticker prices. This outboard oil does a great job in boosting engine performance, keeping carbon out of critical areas, reducing smoke, and prolonging engine life. Intake systems. 3L Power Stroke did not come equipped with an EGR system,. OUR OUTBOARDS. exhaust on yamaha 2 stroke 15hp My new (to me) 15hp yammy outboard 2 stroke is pretty smokey am i wrong in thinking that exhaust should be coming out under the water? as it seems to be coming out at the back of the engine near the water/cooling exit hard to see as it is in a well and not able to remove (prop to big). i do not know if this is causing the problem or not, but it is dripping black oil out of my exhaust silencer. Since you are a newbie to outboards, there is a small outlet on the underside of the motor that we affectionatly call the 'pee hole' it is a telltale stream that tells you the motors impeller is working properly and getting. First, you should know that there are two types of timing in an engine: cam timing and ignition timing. A two-stroke engine with gas leaking from the engine is a serious problem. If Old gas replace with fresh gas/oil mix. The fuel vapor passes up through the gray pipe and meets air coming down the same pipe, which enters from the atmosphere through perforations at the top. if it is huge, then it's a two stroke) Two Stroke motors get their oil from the gas. Positioning Outboard for Storage Store outboard in an upright (vertical) position to allow water to drain out of outboard. In an outboard, though, it may mean something other than a tow to shore and an expensive repair. The Symbol for Cleaner Marine Engines Means: Cleaner Air and Water - for a healthier lifestyle and environment. I would have to disagree with the statements that a 4 stroke engine makes 50 % as much power as a 2 stroke engine. Had around 150,000 when I bought it. Weight - 114 lbs. Since the days of Ole Evinrude, almost all outboard motors used a traditional two-stroke powerhead, which was lighter and less expensive to manufacture than a four. Carefully filed down intake valve stem to. I haven't been running it once I realized this is what it was doing. Ive not seen that happen before and was wondering why that would happen here are my theories 1. Only 87 pounds. It weighs 377 pounds, and received a do-over in 2014 when Yamaha went to a new throttle body (60mm), a new exhaust design, and large diameter intake and exhaust valves. 9hp 4 stroke. Thanks Its the two brass looking tips. Exhaust smoke is the left over burned fuel and air mixture that comes from a combustion engine. well i am going to get bashed for this but oh well it def helps coming out the hole i have it done the old way with a 1 1/2 hole saw in each side just below the end of the tuner but also have the bobs exhaust housing with plugs in all the holes and the plugs out i feel a big difference. ) Gas mixed with too much premix - although we mix it 40:1 with Maxima 927 or whatever thats called. Four-stroke dirt bike oil comes in a variety of weights like 10w-40, 20w-50 and so on. On the back of the outboard, just below where the cover is, on the thin part of the motor, there is a hole. So 10 litres in that distance, although more, may not be excessive. Should water be coming out of my outboard 2 stroke exhaust, if so how much is normal. Seafoam is great, but only needed a couple times a year. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. Gas coming out of exhaust (help please) One of the things I've noticed with my new boat is that at start up there seems to be a little bit of gas or oil exiting. This is part of a 2 stroke it's carbon in the exhaust ,Get some outboard decarbon spray an follow the instructions It will make a mess so don't do it in your drive way. 8 SOHC non turbo engine. Its new, shorter tiller handle makes operation more comfortable, so you can make a whole day of it. When the piston gets to the top of its stroke it has compressed the mixture, fires and pushes the piston down. The barrel of the Bravo OC is cut down even further than a Bravo XS. Lapped the valves. I fixed it but now I have gas coming out of the exhaust pipe when I try to start it. Gas is coming out the plug holes like a fountain. ? recently bought a boat with a 2000 90 HP Merc 2 stroke, oil injected motor. e not enough oil in the gas mix. Then I realized that I didn't run the gas out of the motor last season. Graciously submitted by Pete Burns. For a 2 stroke, it's the sweeping of the cylinder by the fresh charge of air and fuel which is pushing the exhaust gas out. If there's no back pressure, the fresh air and fuel will not only sweep out the exhaust gasses, but they will also begin to exit with the exhaust gas, resulting in a loss of fuel and air which reduces efficiency. With precise microprocessor control and direct injection of the fuel into the combustion chamber after the ports close, the two-cycle DFI can better the most stringent exhaust emission requirements now proposed out to 2007. The 2-stroke has 2 cycles burn and exhaust if no burn fuel-oil mix exhausts out of the tailpipe. Intake systems. Discussion in 'Outboards' started by lenwoodbluz, especially on a 2 stroke. A 2-stroke engine is simpler (no camshaft, valves or valve gear), so by extension that should make it easier to work out issues with poor performance. Lots Of White Smoke Out of Exhaust Pipe. Optimax two-stroke outboards: Remove the prop, attach flush muffs so that the rubber cups fit tightly over the water intakes, then adjust water flow so that some water leaks out around the cups. Within the USA there are three suppliers of diesel fuel and thus there is not reason to make your own and possible hurt yourself or the engine. 4 Remove rubber gas line form the tank to the carb. Its hard to show what i did here with just pictures. The new 4 stroke engines are true rated hp. yamaha's standard upper casing exhaust kit for 2004 and newer f200, f225, and f250 models mar-exhkt-04-00. In order to meet the diverse and demanding needs of these devoted customers, Yamaha offers a selection of over 50 2-stroke model variations and over 20 Enduro models. Are you 100% sure there is gas coming out of the exhaust and not a mixture of gas/oil??? The gas/oil mix would be expected from a blown headgasket (the oil gets in, mixes with some gas, and that crap isn't burned, so it gets to the exhaust). That could explain the condensation I saw in the fuel cap. I know a lot of folks here are running Yamaha 25 2 strokes or have in the past. any suggestions? 951 Seadoo GTX Carbs 95 low jet 165. Reply to this Comment. Since exhaust valves open and close, exhaust gas will flow, then stop, and then flow again as the exhaust valve opens. Before that, lets figure out. Comparing all the engine options, we chose the torquey 3. I have a 1997 Mercury 150 EFI outboard that I just bought. Additionally, even though the 7. Yamaha four stroke technologies offer the 90 HP models unmatched performances: 16-valve dual overhead cam that improves acceleration, advanced injection and exhaust systems as well as Yamaha's exclusive. Hopefully someone here can cast some light on this problem. Large selection of quality mercruiser parts, marine engines, marine parts, boats parts and accessories, such as Mercuiser engines, exhaust, motors, and other boating supplies and accessories. 14hp Briggs and Stratton blows smoke/oil out exhaust I was given a neglected zero turn mower that had been used regularly for the past several years. In addition, the BF 2. 5hp on up! The portable outboard lineup of Mercury includes the 2. Left it in the garage (not heated) with carb off and plugs out hoping the gas will evaporate. The story goes, his brother in law and family were all over his house this past weekend. Two-Stroke Exhaust Systems The two-stroke internal combustion engine has been around with since Sir Dugald Clerk's pioneering gas engine of 1881. and you may even get exhaust gas coming out of the pee hole which is exactly what happened in my case. It's also worth noting that the 155hp 4 stroke is much more reliable than the 300hp model as well if you're shopping for one. I took the boat for a run before and it runs mint. Normal fuel goes in the tanks. however, the motor has a white smoke coming out the exhaust. thats not to say that it should be a lot , but most people that mix , do so with the feeling that a little more oil than necessary is good. Without the right lubrication, two-stroke snowmobile engines and outboard motors run hotter, accumulate deposits and suffer a reduction in performance. one ought t. However i have a 650 Kawasaki motor that i just replaced the crank seals and it runs really good. Second reason is the age of the impeller. When I'm idling, or putt-putting, a lot of smoke comes out with the exhaust. well, the oil in the fuel ends up as a mist in the crank case. This can make it either difficult or impossible to start, depending on the severity of the situation. How to Troubleshoot Two-Stroke Engines: Gas From Exhaust. Thanks alot guys and gals. I loved the motor when it. Close to 2/3 of the issues that have come to our shop this year have been gas or fuel related. Second I would start the engine and let it run for 30 minutes, making sure that it gets and stays at operating temp. The result is improved maneuverability and performance. Manufacturers of outboard motors and MerCruiser inboard engines, with over 4000 dealers in the United States. Check your factory shop manual or the carburetor manufacturer’s manual. For this reason, outboard engines wear out faster, absorb more heat over a longer period and work under a constant load. I had this symptom on my Honda 7. Hence instead of stalling it only "stumbles". check the vent on the gas tank, check fuel coming out of the hose from the tank to the motor. The H screw is set at 1 1/4 turns out. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. 9 is peeing out a hole at the back of the lower unit pretty strong. So most of the dealers will stop selling it as they will be undercut by HK now. What Color Is The Smoke & What Does it Mean. Disconnect the gearshift rod coupling. Fogging oil in a spray can. No experience with outboards, but 2-cycle engines overheat when not lubricated enough, i. gas coming out of overflow tube @carb my sons 2006 TTR50 has gas coming out of the tube from the carb. problem im having is when the boat sits and idles for even a. The exhaust gas rushes out into the header pipe and a pressure wave is created. OB Mechanics- Fuel dripping from exhaust on outboard motor - [quote]I told you an Evinrude and a Woman has the same design problems The dang intake manifold. These carbon-based deposits are conductive, much like oil fouling, and will allow the voltage coming out of the center electrode of the spark plug to track down the core nose rather than jumping the gap. Why does my 4-stroke outboard oil level keep rising? I never add any. I adjusted the carb on both the H&L screws to 1. It was nice outside, so the BIL and my coworker decided to go out and do yardwork, put up lights and clean gutters and such. Re: Oil coming out of two-stroke exhaust Its normal and how a two stroke oils itself ,the oil mixes with the gas and when the cylinder fires the gas is burned off and not all the oil and the residual oil is blown out the exhaust along with carbon,ect and enclosed in a drum it is magnified. My jump into the four stroke outboard world was with Mercury Verado. Here is latest boat outboard engine restoration video. I have been experiencing an intermittent fuel leak with my 2005 Yamaha F225. is this a big problem? - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Then see if it will hold it for five or six minutes. my buddy has a 2001 CR250 and weve got oil coming out of the tail pipe. This motor was stronger out of the hole at 300 Hp than either the 350. My first thought was the carb. The amended complaint has added class representatives and causes of action to the class action lawsuit filed in California against Yamaha in regard to alleged defects in the Yamaha First Generation Four Stroke Outboard motor. Mercury outboard piston kits *Mariner *Force motors. I thought fixing the intake valve would fix the problem, but it did not. Intake systems. Exhaust; Outboard Engines Outboard, Powerhead, Conversion Parts For Sale No Results for "vans" New 2. I need to know how to get the gas out of the crankcase and to. Black carbon is the sooty black material emitted from gas and diesel engines, coal-fired power plants and other fuels. Sorry if I’m wasting your time. When I'm idling, or putt-putting, a lot of smoke comes out with the exhaust. Re: HELP!!! carb blowing gas out instead of sucking in to cylinder ya, mount it on the side, that would work great, just dont forget to drop it first to get that big HP gain 2Fast2Fearless is offline. Problems with Nissan (Tohatsu) 2. It's pretty normal for an older 2-stroke to "fog" a bit out the carb. The Outboard-Wizard is back! (April 2018): Ready to assist public with free technical help on all outboard engines. (2) If the fuel valve is defective, replace it. It seems to me that the way things are going, there are going to be a lot more diesel cars on the road in the coming years because of all the inherent advantages of a diesel over gas engines. What are some causes of over heating of 150 mercury 2 stroke outboard motor? impeller has been changed out 3 times. Well here's what's happening. The engine is leaking oil. Shouldn't it be going down? A. Caterpillar Marine is working with 60 Cat Dealers and 20 MaK & EMD dealers globally to ensure our customers' enduring success. (44) For 2 stroke outboards, it is wise to add outboard motor oil at the same time that you purchase gas. I have replaced the thermostat and water pump. If the peak/smoothest RPM is reached somewhere between 1-3 turns then your pilot jet is correct (the 1-3 turns applies to most carb types). Possible Flooded engine: Go to step #2. eBay Product Reviews provides user generated reviews. Very few outboard motors require 93 octane gas and it is a waste of money to use it if your motor is designed for regular. Thanks alot guys and gals. Lastly, as the piston covers the inlet port, the fuel/air charge is compressed ready for the next power operation (ignition). The engine quickly overheats. 2001 yam 30hp 3 cyl 2 stroke Whenever I tilt my motor all the way up I get 2 stroke oil leaking out of the cowl. I had a mechanic come today and the boat didnt show any symptoms of a fuel leak and ran fine. Evinrude outboard engines have a serial number label that is located on the transom bracket. Last week, someone mentioned that their outboard was not discharching water out of the pee hole. I took the boat for a run before and it runs mint. If you find oil in the exhaust manifolds, most likely the valve covers are the cause of the leak. Oil coming out of exhaust Hey Bill, I recall a few months ago i asked why there was oil coming out of my seadoo exhaust and you said it could be a bad crank seal. It can also cause the water to come out of the exhaust, creating an idle issue. Caterpillar Marine is working with 60 Cat Dealers and 20 MaK & EMD dealers globally to ensure our customers' enduring success. Vintage Clinton Apache J8 5HP outboard motor from the late 50´s. 1) Flush out the outboard cooling system if operating in salt or polluted water. ) Gas mixed with too much premix - although we mix it 40:1 with Maxima 927 or whatever thats called. The lineups of outboard models offered differ by country or area. Second I would start the engine and let it run for 30 minutes, making sure that it gets and stays at operating temp. 90 Hp Mercury Outboard Motor 2 Stroke. 2) Wash off all salt deposits and flush out the exhaust outlet of the propeller and gear case with fresh water if operating in salt water. 6: INTAKE AND EXHAUST SYSTEMS : A. It's pretty normal for an older 2-stroke to "fog" a bit out the carb. I fixed it but now I have gas coming out of the exhaust pipe when I try to start it. A 2 stroke engine requires no oil sump. I have enough marine mechanical experience to ascertain this is unburned oil draining down through the exhaust, and that my boats previous owner obviously was overmixing 2 cycle oil with the gas (my engine calls for a 50:1 ratio). oil in the exhaust. 138 psi compression on both cylinders. They have become the engine design preferred by most marine engine manufacturers to meet government mandated exhaust emission standards. Take a 0-1" depth micrometer, check the top dead center on the top of the stroke of #1 and #2 pistons to compare to each other to show if the crankcase is flat at the gasket surface. Model number 1025301CD. I loved the motor when it. Hopefully someone here can cast some light on this problem. It weighs 377 pounds, and received a do-over in 2014 when Yamaha went to a new throttle body (60mm), a new exhaust design, and large diameter intake and exhaust valves. The more cylinders you have, the closer together these pulses run. 2 stoke outboards have reed valves and operate the fuel pump from crankcase pressure / vacumn. This wave can be either positive or negative in pressure. Oil coming out of exhaust Hey Bill, I recall a few months ago i asked why there was oil coming out of my seadoo exhaust and you said it could be a bad crank seal. Generally it is due to exhaust restriction or wear on the piston/ring. One quick check you can do is to pull the fuel line off your carburetor, turn the gas on for a second and see if fuel is flowing out the fuel line. Evinrude outboard engines have a serial number label that is located on the transom bracket. I Would like some responses to why there is a gas smell from the exhaust wizard 2009-03-08 19:00:39 UTC #2 Because the that is where the burnt gas comes out. Removed head and valves. If the vehicle is exhibiting any of these symptoms, the spark plugs should be inspected immediately. 9 is peeing out a hole at the back of the lower unit pretty strong. Backed by decades of marine power innovation and product leadership, Mercury FourStroke outboards (2.