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Re: P0401 with massive oil consumption
Hello-
If your spark plugs are getting fouled to the point of replacing them twice within a year - AND your losing a quart of oil a week. Clearly your burning oil - even if your not seeing it.
What you need to do at this point is test the compression in each cylinder. While this is gonna be a pain with the rear three cylinders - it's a necessary analytical tool. The compression values, any differences between what each cylinder measures, and the location of the offending cylinders can tell you volumes.
There are several styles of compression testers - buy or borrow the style that has a hose with fitting on the end that screws into the spark plug hole. The hose is generally 12"-18" long and connects to the actual dial gage itself. You'll need this style tester to measure the rear cylinders.
Take those measurement - and post the results.
Glenn
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