Oil on Spark Plugs A Critical Indicator of Engine Health

The fix is to replace the valve cover and the 6th gen covers don't have the oil leak issue while being a direct fit replacement. To answer your question, the oil will not have any effect on the spark plugs, no matter the level. Oil is a dielectric, that is it is an ... Oil in the spark plug wells is symptomatic of a valve cover gasket leak. Not a really difficult DIY job - perhaps 2 hours the first time through ... If there is any question, the spark plug tube seal is offered by GM - Part Number 12607600. "Window shopping" for a Silverado isn't all that bad ... Attachments ... Preview image for a collapsed post. ... Probably is bad valve seals, the experts will chime in but you will have to replace the ... The dealer is telling me that oil is leaking into the spark plug tube through the cylinder head. The dealer is telling me it will cost $1400 to fix. Make sure you replace those tube seals (that's what keeps the oil out of the spark plug tubes), they should come with the valve cover as long as ... This is a fairly common problem due to a bad spark plug tube seal. Remove the valve cover and replace the valve cover gasket and spark plug tube ... While using a nickel based anti-seize compound is acceptable. Never use oil. The area where the spark plugs screws into can get hotter than what ... Carb cleaner, compressed air. Wrap a rag around the blow gun. Repeat as necessary until oil removed. Follow up with brake cleaner, repeat until ...