Engine rev help

[Phil-e]

Hey guys, hope you can help me....

just recently when i ride my blaster when i pull my clutch it starts reving crazy high.... ..... I'll put it in gear and slowly let out and have the gear pull the revs down. I'll be riding then pull the clutch and the rev goes really high again. sometimes when i goose the throttle it'll go down but not always. STUCK THROTTLE?

also another thing that has me a bit worried is sometimes i'll see a puff of smoke come from the engine possibly the head area when i do a rev up in nuetral.... any help or ideas would be greatly appreciated.

thanks!

 

[Kgibson]

I'll say it first....leakdown test :}

 

[acezeesawtooth]

need a few more details... what does it do when its idleing... has the engine been tore apart lately

 

[brandoz28]

leakdown time for sure

 

[Whitty21]

souring idle usually mean air leak

 

[Phil-e]

well it idles fine when first started...and i can usually get it down and it seems fine... it just high idles when i'm gettin the goose and flyin about.... get goin fast...pull the clutch and it soars high....

i was told to check for leaks by a few others ...

what about puffs of smoke? what should i do if i do find that my head is puffin the magic dragon?

also the guy i got it from said it was rebuilt early this year

 

[brandoz28]

hmmm....puffs by the head....hmmmm sounds like a gasket leak....hmmmmm wonder if these are connected....

 

[Phil-e]

think it could be a bad gasket? perhapse tightened wrong? think i could loosen the head then re-tighten it properly that it would help stop? also do the leak test from the carb on?

 

[Kgibson]

Start with a leakdown test and that will tell you if it's the head smoking. It may be coming from the flange and you may have a sticking throttle BUT you need to start with the leakdown first . It will save you alot of headaches

 

[Whitty21]

a leakdown tester and a compression tester are a blaster owners best friend

 

[acezeesawtooth]

yeah i would start with a leakdown usually they have idle issues when its an airleak but maybe yours only leaks when the engine gets warm enought

 

[Phil-e]

will do... i would like to have it fixed before saturday so i can take it on the ride i got goin on... i'd hate to settle for the honda450 4x4...it's so damn slow... 48mph top speed.... and it's takes a lil bit to get there... what a joke...

 

[hudack]

first off if you dont have a leakdown tester get one second do the leakdown test third and im gana bet its an air leak so fix it once you find out where its coming from

 

[Kgibson]

will do... i would like to have it fixed before saturday so i can take it on the ride i got goin on... i'd hate to settle for the honda450 4x4...it's so damn slow... 48mph top speed.... and it's takes a lil bit to get there... what a joke...

Then do the test and have a new head gasket ready.

 

[Whitty21]

man, dont take your chances with one, it could make a 20 dollar job wayyyy more expensive

 

[Phil-e]

problem with northern indiana... nobody stocks blaster parts...all have to be ordered... so i'd be screwed anyhow if i did need a new gasket... would it be bad to let it slide until after saturday? *now i know this is probably an obvious answear and that i shouldn't.... i'm just dreading the beast known as honda 4x4*

 

[Whitty21]

Dont let it slide< you will hate yourself for it

 

[acezeesawtooth]

you will fry and seize your engine and instead of a 20 dollar gasket it will be a 200 dollar rebuild dont do it

 

[brandoz28]

depends, you got the time and money to wait to fix the top end, and possibly bottom end from running it with a leak......


but you need to do a leakdown first of all

 

[Phil-e]

i will do the test tomorrow... any tips on doing it without a leakdown tester? new to the 2 strokes...owned 4strokes all me life... first 2stroke so i have not any of these tools you speak of