P0300 and oil on the #7 spark plug
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P0300 and oil on the #7 spark plug
I have a 2001 5.3 Sierra that has a flashing SES light with the P0300 code. After checking the spark plugs I came across #7 and it was dripping with oil. click for picGuessing bad head gasket? Any suggestions or tips before I start tearing this engine down? If it is the head gasket, how hard is it to get the old one out?
Last edited by renegade4e; 11-16-2014 at 12:03 AM.
#5
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Dripping in oil means one of two things:
Busted piston
Intake manifold awash in oil.
If you've got good compression, the oil likely came down the intake. If you don't have any, well...
Busted piston
Intake manifold awash in oil.
If you've got good compression, the oil likely came down the intake. If you don't have any, well...
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