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Old 03-18-2023, 11:47 AM
stiubhartach stiubhartach is offline
Join Date: Apr 2015
Location: Sacramento
Posts: 194
stiubhartach is on a distinguished road
Oil on the electrodes means oil in the cylinder which can come from three problems.
1. Oil in the intake manifold from a malfunctioning CCV system
2. Valve stem seals leaking
3. Piston rings leaking

Start at the easiest to check and work your way down (#1, #3, then #2)
A. Look in the intake manifold for oil (fiber optic camera)
B. Compression test to check rings
C. If the two above don’t show problems, then it’s probably valve stem seals
2005 X5 4.4i SterlingGrau, Sport Package, DSP
Build 3/12/2005

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