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There are a number of possible reasons behind this, but the more common reason is that you a driving a older or higher mileage vehicle and the piston rings are wearing out. As the piston rings in an engine wear out, the seal that once formed between the pistn and the cylinder wall gradually opens allowing for oil to flow into cylinders which hits the spark plugs and eventually causes "blue smoke" in older vehicles because at that point your vehicle is actually burning oil.
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What can cause oil on the spark plugs thread in a vortec 350?
The VALVE covers must be leaking oil, If it is only on the threads.
What causes oil to leak out from the spark plug?
Leaking valve guides in the head will cause oil to get around the spark plugs.
What causes oil on top of spark plugs?
Time to replace seals, this usually causes misfire.
What causes oil to oil the spark plugs in Chevrolet optra car?
This is often a cracked head gasket between oil passage and a cylinder.
What causes oil in spark plugs 1999 grand marquis?
Bad Rings. Get your Rings replaced asap.
Why do you have oil on your spark plugs?
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Will bad spark plugs cause an engine to burn oil?
No, but burning oil will give you bad spark plugs.
What causes oil in the spark plug well?
I had the same problem when i went to change my plugs. It was the rocker cover gasket
What causes oil to be in the spark plugs?
Either worn valve guides, worn rings, or a holed or cracked piston.
Is there oil inside where you plug the spark plugs into in my Nissan Altima?
No there should not be any oil where you plug your spark plugs into
Why is there oil on the spark plug threads?
valve stem seals
What are the causes of a cars spark plugs not getting spark?
there are several reasons this could happen.distribator cap and wires spark plugs may need to be replaced.there could be oil getting thru and on some of them. if your car doesn't have an electronic ignition the cylinoid could be bad.
