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OEM rubber parts brittle and hardened?

dcarver220b
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OEM rubber parts brittle and hardened?

11 months 2 weeks ago

#32137

Recently did a valve adjust, then installed new gasket and caps on valve cover . One of the caps leaked, so here we go again. 2024-01-25 Remove Valve Cover, Install Timing Gear O-Ring

Must remove both lower coils to remove valve cover
It comes out RHS, keeping cover as far forward as possible
Check cover end caps for brittleness I had OEM caps. The leaky one is rock hard, had no 'compression' left in it e.g. for the cover to squish the cap into the half-moon.

Recently received a batch of OEM end caps. This batch was 'good' and had compressibility.

Just another thing to watch for when dealing with 45 year old 'new' parts.

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