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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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My old motor would OCCASIONALLY blow a cloud of smoke on start-up. More often when I had parked on a hill. My oil consumption was less than a quart per 1000 miles.
My theory is that the oil rings can migrate so the gap is at the bottom of the cylinder. Under certain conditions oil will then seep into the combustion chamber.
I once disassembled a T1 VW motor, I had built, that was smoking on startup. I thought I had a broken ring. Turned out that one cylinder had the oil ring gab at the bottom. (I am certain that I didn't assemble it that way). YMMV
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Gordon
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'71 911 Coupe 3,0L outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
Trackrash's Garage :: My Garage
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