Join Date: Apr 2019
Location: Metro Detroit, Michigan
I have a Lincoln Town Car that has this issue. It will run and drive just fine, does highway speeds just fine, but when idling for more than a few seconds, say at a stop light or in a drive through when I accelerate it puffs smoke. It is my understanding that this is caused by oil pooling and seeping at the valves and being blown out the exhaust.
In contrast, I had a Dodge Durango that would smoke constantly, whether idling or accellerating. It is my understanding that this was caused by a stuck oil ring(s).
If you have oil coming out of the PCV hose, it could be a number of things, it could be oil sludge heating up and giving off smoke, it could also be blow by.
What color is the smoke? Is it mostly blue, grey or white?