Leaking Oil Filler Cap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bearhawg · 07-04-2018, 10:50 AM

Why in the world would an oil filler cap leak? I've replaced it twice and it still leaks. I cleaned the engine and added the fluorescent die and this is what I found. The oil is not coming from the cover bolt that is lit up, just pooled there first. For a moment I thought I had a tiny hole/crack in the valve cover just below the filler hole but there is no prior damage that I can see. funny thing is I didn't find any die on the cap. completely unrelated but I did find I have gas in the oil from a rich running carb.

Any thoughts?

07-04-2018, 10:50 AM	#1
Bearhawg Registered User Join Date: Feb 2018 Location: Snellville GA Posts: 104	Leaking Oil Filler Cap Why in the world would an oil filler cap leak? I've replaced it twice and it still leaks. I cleaned the engine and added the fluorescent die and this is what I found. The oil is not coming from the cover bolt that is lit up, just pooled there first. For a moment I thought I had a tiny hole/crack in the valve cover just below the filler hole but there is no prior damage that I can see. funny thing is I didn't find any die on the cap. completely unrelated but I did find I have gas in the oil from a rich running carb. Any thoughts? Attached Images



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