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Pinson, AL
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z71will
11/26/2017 8:24am
11/26/2017 8:24am
I'm not sure if this is normal or not but I have a Honda cr125 that I'm working on and when I took the pipe off there was black oil that came out the pipe and exhaust flange. Not a lot but I'd say maybe a cup or half a cup? I had only ran it for a total of 20 minutes after the rebuild. I didn't see any oil shooting out the back when it was running. I run a 32:1 oil ratio.
The Shop
1. Unburnt oil in fuel mix. Usually rich jetting.
2. Tranny oil getting sucked into the crankshaft area through the seals. New seals needed.
3. For the third one, tranny oil seeping through the center case sealing surfaces. Did you use the correct sealer? (Yamabond) Or is the sealing surfaces nicked up or not flat? (needs lapped)
These are the only 3 ways that you will find oil in the pipe, short of dumping a cup of oil in there...
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