Leaking / blown crank seal symptoms?
Posted: Sun May 18, 2014 10:19 am
Hi all, hoping someone here with a little more experience in these matters might be able to confirm what I believe must be a leaking crank seal on the front cylinder of my KR250.
The bike is a low km (4,900) jap import and clearly the engine has never been touched. I've been slowly recommissioning the bike but the focus has been the chassis, brakes etc. as the bike started and ran fine when I bought it, though I must admit I did wonder whether I should've had the engine pulled down for an inspection at least.
Anyway, the bike is basically finished and has come up a treat, it looks amazing and I'm very happy with it, except on its first little blast down the road it started spitting oil out of the lower pipe muffler, out the end and out the bolt holes that hold the muffler sleeve on. The oil doesn't appear to be two stroke so it must be gear box oil so I assume I have a blown or leaking crank case seal on the front cylinder. The muffler still has notice suppression packing around the baffle (which I assume aren't removable) and this is soaked in oil.
So, I'm no engine expert but is this the correct diagnosis or is this something else?
I read in the manual that you need to remove the rear cylinder & head in order to remove the engine from the frame, is this right?
Appreciate any advice form the experts.
Cheers, Richard
The bike is a low km (4,900) jap import and clearly the engine has never been touched. I've been slowly recommissioning the bike but the focus has been the chassis, brakes etc. as the bike started and ran fine when I bought it, though I must admit I did wonder whether I should've had the engine pulled down for an inspection at least.
Anyway, the bike is basically finished and has come up a treat, it looks amazing and I'm very happy with it, except on its first little blast down the road it started spitting oil out of the lower pipe muffler, out the end and out the bolt holes that hold the muffler sleeve on. The oil doesn't appear to be two stroke so it must be gear box oil so I assume I have a blown or leaking crank case seal on the front cylinder. The muffler still has notice suppression packing around the baffle (which I assume aren't removable) and this is soaked in oil.
So, I'm no engine expert but is this the correct diagnosis or is this something else?
I read in the manual that you need to remove the rear cylinder & head in order to remove the engine from the frame, is this right?
Appreciate any advice form the experts.
Cheers, Richard