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We have a nice Sherman at the Museum. It has a single issue, it smokes like a freight train at first start, oil smoke. The compression is OK, leakdown is nothing. After running maybe 15 mins under a load of just the weight of itself, the smoke will clear and there is no smoke on acel or decel. It will start right up with no smoke after sitting 5, 10, 15 mins, but, if you let it it sit over night, it fills the compound with smoke. Again, it clears after running. It is worse after an oil change.
If it were a car, i'd say valve seals, but, none on the GAA. I do know that there are little holes in the cups on top of the retainers/springs. My Q is, is it possible to have the holes plug and let the oil, when it is hot, overflow the cups and run down the valve stems causing this issue?
If anyone has experience on the GAA and can give me a hand, PM me and I will send you a number so we can chat about this big 'ol V8.
Will
If it were a car, i'd say valve seals, but, none on the GAA. I do know that there are little holes in the cups on top of the retainers/springs. My Q is, is it possible to have the holes plug and let the oil, when it is hot, overflow the cups and run down the valve stems causing this issue?
If anyone has experience on the GAA and can give me a hand, PM me and I will send you a number so we can chat about this big 'ol V8.
Will