What causes oil to collect in the spark plug hole?
Asked by Flodog Feb 02, 2017 at 01:47 PM about the 2001 Ford F-150 Lariat Crew Cab SB
Question type: Maintenance & Repair
When changing spark plugs on my 2001 Ford F-150 triton 5.4L engine I
noticed oil collected in the spark plug hole before I pulled the old plugs. What
can cause this and will it affect engine running normal?
3 Answers
leaking valve cover gasket...
4 people found this helpful.
The oil could attack the coil boots and break them down so I would fix the leak.
Leaking spark plug well gasket that is part of the cam cover gasket set. Get it replaced. It will require removal of the cam cover.
4 people found this helpful.