Can your oil pressure sensor leak?
Oil pressure switches are notorious for leaking as they age. When that happens, they send erroneous data to the computer, and you end up with a glowing “oil” light. First, perform a visual check of the switch. If you see fresh oil on it (and it’s not leaking from another component above it), it’s toast.
Is it normal to have oil on spark plug threads?
Having oil on the spark plug threads is not the end of the world. Always check for accumulated oil or dirt on the sides of the valve cover after each oil change. If you find oil leaks, it is better to replace the gaskets and seals immediately to prevent expensive engine damage.
What causes oil on spark plug threads?
As a general rule, oil on spark plugs can be caused by bad valve cover gaskets, worn spark plug o-rings or valve guides, a faulty head gasket or a broken piston ring. Most of the time it can be caused by a leaking valve cover or bad spark plug o-ring that can easily be replaced.
Where does the oil come from on a spark plug?
If your spark plugs look like the picture above, fully covered with oil when you remove them, you can feel lucky. When the oil on your spark plug looks like this, it is not coming from the engine’s inside; it is actually coming from the outside.
What to do if oil gets in the air filter?
If you notice engine oil in the air filter or intake housing, a professional mechanic might recommend a compression test. This is where a mechanic will install a compression gauge on each individual spark plug hole to check the compression of each cylinder.
Is there an oil pan above the oil filter?
Filter housing is of no such if you will on LS engines. The filter screws right into a machined portion of the oil pan casting. You could have a leaking oil pan gasket, or there is a blocker plate (or oil cooler lines) that are right above the oil filter. The gasket there could be leaking. Of course make sure it’s not the filter or gasket itself.
How do you remove an oil plug from a car?
The second method is a traditional one and can be messy as well. The tools required are a drive socket wrench and a plastic oil pan. Raise your car to some height then crawl underneath and locate the plug. Place the plastic oil pan beneath the oil plug and loosen the plug until the oil begins to drip.