Question about 2000 Yamaha DT 125 R

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When opening the throttle fully it splutters.this is not a 2000 its a 1990.

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You either got too much fuel or too less fuel being pulled in the engine on carb there is 2 screws you need to find the mixture screw and screw it in if it runs worse screw it out 2/12 turns this picture will show you it when opening the throttle fully it splutters. - f1a20cb.jpg

Posted on Sep 05, 2009


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Hi I have a 2002 Corolla with an apexi, when driving it can start to splutter a bit and I have to put my accelerator down fully just to maintain the revs, then as the car slows I have to change down a gear...

Most common problem is the IAC(Idle Air Control) valve.But if you say some times work I will suspect the throttle is clogged. Remove the Air hose,apply full throttle and hold, spray carburetor cleaner on clot using thin long nose player clean inside wall and throttle. don't spray directly inside because the carb cleaner is to aggressive for some of the gasket.
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Can you adjust the TPS on a 2001 Corolla? If yes how do you adjust it?

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Apr 13, 2017 | 2001 Toyota Corolla

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Can you adjust the TPS on a 2001 Corolla LE? If yes how do you adjust it?

You back probe the sensor,then turn on with the key, engine off
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When I open throttle on bike it misses and

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It seems to start sometimes an other times it dies out.. an wen it does run its spluttering wen u open the throttle

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Hi mt pit bike is spluttering under acceleration i have tryed to adjust air screw with slight difference but it is still not smooth under power. bike is fk1 125 dont know if valve clearence would be the...

Your bike may be jetted too lean. A common problem in these days of overzealous EPA regulations. You can tell if when you've cranked your throttle wide open and it splutters, if you back off on the throttle about 1/8 to 1/4 turn, it clears up. This is indicating that it is jetted too lean. When you close the throttle slightly, the fuel is being metered by the main jet and by backing off on the throttle a bit, you're cutting back on the air, thereby bringing the mixture closer to what the engine needs. Try rejetting the carb, Go up one or two sizes on the main jet, one step at the time.

Now, it could be too rich as well. If it splutters and blows black smoke out the exhaust, it either jetted too rich or the float level in the carb is set wrong.

Take care of the simple stuff first before rejetting the carb. Make sure your spark plugs are the correct ones and they are not fouled from overusage of the choke or enricher. If you allow the bike to "warm up" with the enricher on, plug fouling is common with this practice. I get the bike started and as soon as it will run without the enricher or choke on, I turn it off and keep the bike running with the throttle. Don't foul as many plugs that way.

Nov 09, 2009 | 2008 Yamaha Yamaha G5

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Bike coughs,splutters and even backfires more so in low rev's

Either take the carbs off and clean them or add some fuel additive to clean the system. Sounds like you have a clogged jet.

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Xsport 110 pit bike

check the 4 stroke oil if it starts to splutter at half throttle

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