When running a camshaft with 230+ degrees duration, combustion at low RPM
(under 3000 or so) is very poor. If the tune up isn't just right plugs foul very
How does this relate to poor ring seal?
On a good running engine, combustion completes before the exahust valve
opens or shortly there after. When the tune up is not right, combustion never
completes, this results in fuel/carbon in the cylinder further contaminating
the next fresh charge. This fouls the plugs making a bad situation worse.
This fuel/carbon in the cylinder is not good for the rings, especially when
they haven't seated well.
Thanks for the explanation on how a bad tune effects cylinder rings.
In my case I am pretty sure the carb is dialed in properly and timing is correct; but I plan on checking the carb and timing.
My issue is excessive burning of oil and I want to first investigate the rings by doing a leak down test. Then I will be checking the carb and timing. I just don't know where the oil is going ? Several people have posted potential problems and the list is getting longer