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Old 18-02-2017, 10:12 PM   #1
Jdilkes95
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YX140 Pitbike

Hello, I have a YX140 that I brought as a non-runner.. I got the bike running today and oil flowed out of the rocker breather and the crank case breather.. What exactly does this mean? The kick start has gone really hard to kick now.. like it just build loads of compression
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Old 18-02-2017, 10:42 PM   #2
Cagiva4ever
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Re: YX140 Pitbike

so called CrankCase pressure, too much of it. being 4t is will spill out oil Through out Breather.

check that motor oil level isnt over filled.

determine if it has now leaked engine oil above Piston, Via like leaking valvestem oil seals.

determine also if the piston/bore clearence is too big, causing BlowBy into Crankcase...

Does the engine smoke alot/un-normal alot when cold started ?
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Old 20-02-2017, 10:57 PM   #3
Jdilkes95
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Re: YX140 Pitbike

Quote:
Originally Posted by Cagiva4ever View Post
so called CrankCase pressure, too much of it. being 4t is will spill out oil Through out Breather.

check that motor oil level isnt over filled.

determine if it has now leaked engine oil above Piston, Via like leaking valvestem oil seals.

determine also if the piston/bore clearence is too big, causing BlowBy into Crankcase...

Does the engine smoke alot/un-normal alot when cold started ?

I brought the bike as spare or repairs.. I just rebuilt it! It would struggle to kick up.. it's like compression comes and go's also the kick start has gone hard as hell!!
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Old 21-02-2017, 01:29 PM   #4
Cagiva4ever
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Re: YX140 Pitbike

no need for Quotes, its like spamming....

you really have to be More specific, regarding what you have done and havent done to the engine.

that answer as is is worthless without any details.

you are now only repeating yourself.

i.e are you not able to take out the spark Plug and rotate engine Via Flywheel or and then Via KickStart. to Determine *separately* if there is a Mechanical drag issue problem Due KickStart mechanism->shims washer clearence related etc issues on Kickstart.

or the mentioned Oil leak onto above Piston.

or are you Fludding the engine and causing Hydrolock ?

also a sign of a Separate issue problem like valve clearence's : -"it's like compression comes and go's also" . if that sentence is to be taken literally..

do the Basics 1st.
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