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Simplicity_728

Smoking Briggs

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Simplicity_728
The 6hp Briggs I got for my Homesteader 6 smokes really bad when it's cold outside. When it is first started it puffs blue smoke really bad for 30 seconds then clears up and it doesn't use any oil. It's a 1966 that's been rebuilt 6 years ago. All the aluminum cylinder Briggs I've had have done this so I'm wondering it it's something with the Kool Bore design or something else

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Simplicity_728
I had SAE 30 with Marvel Mystery Oil mixed in the crankcase (too re-seat the rings) and last night i changed too 10W-30 and it seemed too help alitte. I hasn't used any oil so I think it's part of the aluminum cylinder design becuase there is no ridge at the top of the cylinder

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MrSteele
I have an Onan that does the same thing, and have a couple of Briggs as well that do that. I always assumed it was the choke pulling too much gas in the cylinder, and having the gas take a while to burn out

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jlasater
I was under the impression that Marvel mystery oil was an additive to "improve" oil not something that would help rings seat. There's no additive I know of that will help a bad ring job seat properly.

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