OzVMX Forum

Marque Remarks => KTM => Topic started by: gra1961 on May 05, 2013, 08:04:02 am

Title: 86 300 gs burning g/box oil
Post by: gra1961 on May 05, 2013, 08:04:02 am

have an 86 300gs had been sitting for bout 5 yrs due to corroded out water pump housing,replaced and run the bike but was burning g/ox oil,replaced crank seal with gen seal but still smokes badly.drained g/box oil and started and run it for about 30 seconds,no smoke.would be unusual to be sucking it in thru crankcase gasket I would think.anyone think of where else it may be getting thru ?cheers gregg

Title: Re: 86 300 gs burning g/box oil
Post by: evo550 on May 05, 2013, 05:51:43 pm

Through your case halves between crank area and gearbox. Maybe a faulty gasket.

Title: Re: 86 300 gs burning g/box oil
Post by: supermotomc on May 07, 2013, 08:20:40 pm

Have you burnt out the chamber and silencer yet?

Title: Re: 86 300 gs burning g/box oil
Post by: gra1961 on May 08, 2013, 07:00:39 am

no smoke when run without g/box oil cancels out oily pipe .guess i was trying to talk myself out of spliting the cases.motor out she comes.

Title: Re: 86 300 gs burning g/box oil
Post by: g465b on May 09, 2013, 09:47:27 pm

can offer the same advice you offered me-only have two spares and use paper mache,that 300 was mint when u got it
what have u done. cheers

Title: Re: 86 300 gs burning g/box oil
Post by: Canam370 on May 09, 2013, 11:17:52 pm

If you aren't sure whether the bikes burning gearbox oil (or if the pipe is full of old oil smoking) put a little Castrol R into the gearbox (with the existing lubricant, not instead of :D) - you'll smell it in the exhaust. 

Title: Re: 86 300 gs burning g/box oil
Post by: gra1961 on May 10, 2013, 06:32:55 am

thanks grant.where's my compliance plate?

Title: Re: 86 300 gs burning g/box oil
Post by: 80-85 husky on August 13, 2013, 10:37:37 am

go the crank gasket for sure. try the Castrol r trick, will defiantly confirm or deny the need for a costly time consuming rebuild when all you want to do is ride it.....