Oil Leak

[01exrider]

Hi guys and gals i just bought a 03 400ex, i have searched the forum and couldnt find a leak like mine. I have an oil leak between the cylinder and the crankcase on the right hand side of the engine underneath the header. I did find , while i was searching, that the studs can pull out and was wondering if that could be a cause of this leak. I havent tore the top end of the engine yet because i need to get my yfz running first. but im just looking for somewhere to start and advice is greatly appreciated.,

Thank you
Alan

[250rforlife]

check the cam chain tentioner valve screws. theres one with a phillips bolt and 2 other regular bolts. millips head bolt fell out and i would leak 1 quart in 30mins of rding. you might have a bad crankcase gasket btw

[01exrider]

yea im thinkin the gasket may be bad because i can clean it all off then start it and watch it bead up right on the base of the cylinder

[NMills]

Maybe he knew it did it and figured he'd get rid of it... that's a problem buying used... sometimes you make out and sometimes you don't.. did he do any work to it??

[01exrider]

he said a mechanic put a head gasket on in and it was leaking when he got it back i dont know how reliable that is but for $650 i figured i couldnt pass it up

[NMills]

Sounds good... as long as it's not gonna be a money pit...