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vdbucks · 06-27-2012, 10:26 AM

been facing a pretty strange problem as of late...

but first, what lead me to this problem...

I bought a used bike about a month ago. It needed some minor work done, namely just oil change, tune-up and the like.

I also had to have one of the spark plug holes on the top block reborred because some idiot previously stripped the threads. So while removing the rocker arms, my idiot mechanic dropped one of the washers down inside the block, which fell all the way down in to the crank case and got wedged in between 2 gears.

I must note that the engine has NOT been turned on until the the washer was removed, so there's no damage from that.

But, now that I had to basically overhaul the engine - which was running perfectly fine before this - the main (head?) gasket - the metal one between that seals the compression chamber - starts leaking oil after about 10 minutes of high idle testing. I've tried 3 brand new gaskets, and all have the same end result. Also, the surfaces on both blocks are flat and smooth and have no damage on them at all.

So I'm pretty much stumped... but if I had to guess I'd say that perhaps the oil isn't circulating properly and is getting built up around that area. I can't see how it would though considering all passageways for the oil are completely clean and oil drains down them properly when I pour oil down from the top block.

Anyone out there who knows more about engines than I do have any ideas?

06-27-2012, 10:26 AM
vdbucks Monger Cash Industry Role: Join Date: Jul 2010 Posts: 2,773	who knows motorcycle engines? been facing a pretty strange problem as of late... but first, what lead me to this problem... I bought a used bike about a month ago. It needed some minor work done, namely just oil change, tune-up and the like. I also had to have one of the spark plug holes on the top block reborred because some idiot previously stripped the threads. So while removing the rocker arms, my idiot mechanic dropped one of the washers down inside the block, which fell all the way down in to the crank case and got wedged in between 2 gears. I must note that the engine has NOT been turned on until the the washer was removed, so there's no damage from that. But, now that I had to basically overhaul the engine - which was running perfectly fine before this - the main (head?) gasket - the metal one between that seals the compression chamber - starts leaking oil after about 10 minutes of high idle testing. I've tried 3 brand new gaskets, and all have the same end result. Also, the surfaces on both blocks are flat and smooth and have no damage on them at all. So I'm pretty much stumped... but if I had to guess I'd say that perhaps the oil isn't circulating properly and is getting built up around that area. I can't see how it would though considering all passageways for the oil are completely clean and oil drains down them properly when I pour oil down from the top block. Anyone out there who knows more about engines than I do have any ideas?