... and then dies. No matter how you play with the throttle. This is on a stock 2000 blaster. You will be riding around just fine, and then the rpm's go way up, and then slowly decrease until the engine stalls. I did a search for this but cannot come up with anything, does anyone have an idea?
Engine revs way up...
- Thread starter rickstwowheels
- Start date
It sounds like you may have an air leak somewhere in the engine. A lot of erratic revving problems on a 2-stroke engine are signs of lean running, often caused by an air leak. I'd especially check your carb. boot, as it could be torn. A torn carb. boot may have a concealed crack that stays shut most of the time. However, if the engine gets shook up just so while riding, the tear is exposed, air gets sucked in, and the engine leans out and dies.
If you can't find any visible problems, I'd check your flywheel side main seal, and then do a leakdown test on the crankcase. This is a quick way to check for air leaks. Nothing? I'd take the carburetor apart and do a thorough cleaning. Especially check the pilot jet and idle air passages. Also, don't forget that a partially-clogged fuel filter can cause a sudden loss of power...
If you can't find any visible problems, I'd check your flywheel side main seal, and then do a leakdown test on the crankcase. This is a quick way to check for air leaks. Nothing? I'd take the carburetor apart and do a thorough cleaning. Especially check the pilot jet and idle air passages. Also, don't forget that a partially-clogged fuel filter can cause a sudden loss of power...
Remove your tank and flush. Unbolt the petcock and give it a good cleaning. Check for dirt in the float bowl, clogged main jet or float valve.
Sounds like it's going lean, this happened to me before.
we were riding in some gravel pits, and when we all went to take a break my friends just was revving like crazy, so he put it in neutral and hit the kills-witch, that didn't work so we took the spark plug cap off to cut the spark that still didn't work so we had him shift up to 6th and dump the clutch and it stalled. later investigations led that there wasn't enough gas and it was going lean but it wouldn't die out. so we filled it up with gas and it was all set never happened again..
we were riding in some gravel pits, and when we all went to take a break my friends just was revving like crazy, so he put it in neutral and hit the kills-witch, that didn't work so we took the spark plug cap off to cut the spark that still didn't work so we had him shift up to 6th and dump the clutch and it stalled. later investigations led that there wasn't enough gas and it was going lean but it wouldn't die out. so we filled it up with gas and it was all set never happened again..
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