Spark plugs. Is this normal?

sti1471

Petty Officer 1st Class
Joined
Aug 2, 2011
Messages
312
I pulled the spark plugs on my 83 mercury 80 and all 4 of them had what looked like oil/gas mix on them. Not a ton, just a little. They are the gapless type plugs. Inside the spark plug holes smells like gas.

Normal or no?
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: Spark plugs. Is this normal?

Oil residue is normal.

As long as the motor performs well, WOT RPM is within recommended range, it is perfectly normal.
 
Top