04 eton 90 viper backfire n bogs
just had new piston n rings put on . still have a problem with back fire and bogs down . idles great .!.My question is would a crankcase leak cause this ? that would give me the bad compression ? no .I have nothing leaking under the motor so im leaning towards an electrical prob ..like I said idles great .. spits n sputters given throttle .not a carb problem..not a bad rings prob..thanks.
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Check the end of the pipe. The screen gets plugged.
A seal leak has nothing to do with compression. |
negative ..the spark arrester is out .I have a new piston /rings .top end is new. on a 2 stroke if the bottom end is leaking it will suck in air ? I will look into cdi box.. But another $140 is killing me. guessing is not an option .
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Aleaking seal can suck air in.
Is there spark? Find the specs and ohm the coil if need be. |
update !! just did another compression test on a New ! piston /ring / cylinderhead.. Its still leaking pressure so I am sure its in the crankcase . anyone take an eton 90 2004 2 stroke crank case apart ? I have new LH seals coming in the mail.. was told they are the easier ones to change first .
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Let's get this straight...
Are you doing a compression test or a crankcase leakdown test (which isn't done with a comp tester)? If you are doing a compression test, your gauge is leaking. Ummm...the main bearing crankcase seals are on the outside of the case....The LH are easier. It's under/behind the front clutch. The RH you would need to pull the stator off. |
so you have spark?
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[QUOTE=LT80;3304346]Let's get this straight...
Are you doing a compression test or a crankcase leakdown test (which isn't done with a comp tester)? If you are doing a compression test, your gauge is leaking. Ummm...the main bearing crankcase seals are on the outside of the case....The LH are easier. It's under/behind the front clutch. The RH you would need to pull the stator off.[/QUOT Ok never gave that a thought . My compression tester is leaking .. it is old. So let's start again. I have new piston / rings . I have the spark arrested out and verified the exhaust is clear.. quad idles great . Starts right up. Won't run well at all backfires. Spits out the air cleaner.ect.. like its out of time. Cleaned out the carb. / jets 3 times just to be safe. I don't think it's electrical because it sits running with no problem.. thanks.. |
I agree, let's not think electrical at this point.
How about a cracked reed? |
Originally Posted by LT80
(Post 3304377)
I agree, let's not think electrical at this point.
How about a cracked reed? |
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