Question about 2003 Suzuki RM 250

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2002 rm 250 smoking

It runs fine when your in high rpm,but if you ***** foot on er,and then go to throw the throttle down it blows blue smoke for like ten seconds.and it seems to be eating the gear oil.please help.

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Probably due to a bad crank seal on the clutch side. The extra smoke is from the trans fluid burning through the cylinder.

Posted on May 26, 2009

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I have a 5L-E toyota hilux that runs fine at idle yhen when you rev it to about 2000 rpm it starts to blow alot of white smoke. I have cut injectors out while the smoke is blowing with no noticable...


i believe the engine is running too lean as if it was running too rich it would blow black smoke If it was blue smoke it is oil related eg valve stem seals,valve guides and or piston rings all of these things will create blue smoke if one of the above is worn out

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Honda xr 250 blowing smoke


Hi, Anonymous your instrument gauges and lights can alert you to most electrical and engine issues they can not warn you about failed engine gaskets or seals so your engine has to resort to old fashion alert methods of colored "SMOKE SIGNALS" here is a breakdown of their meaning:
1. COLORLESS OR SLIGHTLY BLUE SMOKE on start-up means your air/fuel mixture is at the right composition and everything is well burnt in your combustion chamber.
2. BLUE SMOKE on startup is usually caused by failed valve seals dripping oil into the combustion chamber when the engine is not running.
3. YELLOW OR BROWNISH SMOKE at start-up means your air/fuel mixture is too lean. Too lean means that there is low fuel but high air mixture in your combustion chamber.
4. WHITE SMOKE on startup may be caused by a blown head gasket allowing coolant to enter the combustion chamber and may start dripping out of the exhaust pipes or mufflers. Smoke while riding is usually caused by worn out or damaged valves, seals, guides, pistons, rings, or cylinder walls.
5. BLACK SMOKE on startup is usually caused by too much fuel in the combustion chamber this can be due to air/fuel mixture adjustment too rich, accelerator pump improperly adjusted, faulty choke/enrichner or not in the off position, air filter dirty and clogged, faulty carburetor float needle and seat, pilot jet too large, fuel injectors leaking, smoke while riding is usually caused by the main jet being too large or a damaged carburetor.
It should be noted that aggressive or abnormal throttle operation will cause these conditions to manifest themselves exponentially.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the links below. Good luck and have a nice day.
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1 Answer

High to low rpms


There may be a problem with the idle air control circuit. Make sure that the throttle body and idle air passages are clean. If not, you may have to do a throttle body cleaning on it. You can follow the directions on the can, but you will have to make sure that you give it a few shots with the throttle plate closed, so that the cleaner can get into the idle air passages. Also, make sure that there are no vacuum leaks and there is not any un-metered air that is entering into the intake. If the exhaust is blowing out and blue smoke, then the piston rings may be worn or stuck and the combustion chamber all carbon built up. If it blows out black smoke, then it's running too rich.

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Hi, Kime_05 your instrument gauges and lights can alert you to most electrical and engine issues they can not warn you about failed engine gaskets or seals so your engine has to resort to old fashion alert methods of colored "SMOKE SIGNALS" here is a breakdown of their meaning:
1. COLORLESS OR SLIGHTLY BLUE SMOKE on start-up means your air/fuel mixture is at the right composition and everything is well burnt in your combustion chamber.
2. BLUE SMOKE on start-up is usually caused by failed valve seals dripping oil into the combustion chamber when the engine is not running.
3. YELLOW OR BROWNISH SMOKE at start-up means your air/fuel mixture is too lean. Too lean means that there is low fuel but high air mixture in your combustion chamber.
4. WHITE SMOKE on start-up may be caused by a blown head gasket allowing coolant to enter the combustion chamber and may start dripping out of the exhaust pipes or mufflers. Smoke while riding is usually caused by worn out or damaged valves, seals, guides, pistons, rings, or cylinder walls.
5. BLACK SMOKE on start-up is usually caused by too much fuel in the combustion chamber this can be due to air/fuel mixture adjustment too rich, accelerator pump improperly adjusted, faulty choke/enrichner or not in the off position, air filter dirty and clogged, faulty carburetor float needle and seat, pilot jet too large, fuel injectors leaking, smoke while riding is usually caused by the main jet being too large or a damaged carburetor.
It should be noted that aggressive or abnormal throttle operation will cause these conditions to manifest themselves exponentially.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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https://crfsonly.com/forum/viewtopic.php?t=14365
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1 Answer

1995 SC1 280K oil burner. Kept full. Previously 41 mpg, now 27 mpg over 1 year span. Oil smells like gas and so does the exhaust. Extreme loss of power. Will not idle. Runs rough at lower rpm, but...


If you are keeping the car forever, swap the engine with a rebuilt one. there are many for sale out there.
about $2k for a rebuilt with core credit. if you are really just keeping it for a year or two until the front "frame" collapses, buy a used engine out of a junkyard, look until you find one with less than 100k on it. there are many for sale on eBay but the shipping will kill you and you most likely have junkyards closer to home.

note if you have an SC1 means SOHC so you have to have a SOHC donor vehicle. SC1,SL1, or SW1
the engines were the same 96, 97,98 i believe. but do not get an older engine.

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I just bought an 03 RM250 and the dude told me that he had just rebuilt it. I picked it up at night so I didnt notice the smoke then. When it runs man it pours blue/white smoke terrible. I thank it may...


Is this bike a two stroke or four stroke.Meaning do you mix oil n gas,or dose it run on straight gas .If this a two stroke,its normal to blow blue smoke,but not that bad.Sounds like the person before you put to much oil in gas or piston rings are shot.There are exact oil to gas ratios you must follow with a two stroke engine.If you dont, you can have all kinds of problems.

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BLUE SMOKE FROM AUDI RS6 ON DE ACCELERATION AND START UP THINK OIL STEM SEALS ARE LETTING OIL THROUGH. CAR RUNS FINE I THINK, AND EXCESSIVE BUILD UP OF OIL IN DRIVER SIDE TURBO PIPE, 62000 MILES WITH A...


General rules of thumb: Low speed engine on acceleration with smoke in the exhaust plume = worn piston rings High speed engine accelerating (spooled up turbo) with smoke = oil form turbo bearing and/or piston rings Engine on over run (coasting down, foot off the gas) with smoke = oil from valve guides. VW/Audi make good engines with tight tolerances so none of the above should apply at 62K miles; just make sure that the oil (the right oil) and oil filter are changed regularly.

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