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Oil in exhaust

  • Thread starter Thread starter RWhitehouse
  • Start date Start date
R

RWhitehouse

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I've noticed recently that the battery breather tube and the center stand have been coated with a thin layer of oil after a longer ride. I figured it was drips from the oil filter cover blowing back along the pan, but now I fixed that and oil is still getting all over everything.

On closer inspection, at the crossover pipe in the exhaust, there is a small leak, and when the engine is started cold until it warms up, little poofs of oil mist are coming out of that leak. After about a minute it stops. It's too thin to be motor oil, but definetly has an oily texture to it. I thought it could be some condensation in the exhaust mixing with residue.

The exhaust on the right cylinder was partially restricted by a big dent from a minor crash, it's creased so it couldn't be pulled out. A new exhaust will be here on thursday to replace it. Could this restriction have burnt the valve or valve seat in just 500 miles?

The bike doesn't burn oil at all, which is why it seems unlikely liquid oil is finding it's way into the exhaust. Any thoughts on this?
 
I accidently overfilled mine this weekend, not a ton, I mean like 1/4 quart and it smoked like chimney and leaked oil around the head at the exhaust until I drained a bit of the overfill out. Just something to check.
 
Run a compression test on it and you'll know wether it is coming from the rings or not.
 
I had oil leaking from my exhaust also. I replaced valve seals. they were 29 years old LOL.:-D
 
I'm thinking the valve seals, though now that I'm looking for the oil mist, I'm not seeing it, from either cold or warm start.

I imagine with the twin OHC taking the heads off to redo the valve seals is a major PITA, and then there's resetting the timing chain....whoo boy.

It doesn't burn oil whatsoever. No smoke ever, and no burning oil smell in the exhaust either.

I'll try to do a compression check tomorrow, what psi is "good" for these motors?
 
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