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- - engine oil leak (https://67-72chevytrucks.com/vboard/showthread.php?t=819870)

BigBird05

03-23-2021 04:56 PM

engine oil leak

I have a 2003 Yukon that is leaking oil. It seams to be coming down the block from the top. I have replaced the Oil pressure sender and the Crank position sender. Does anyone have any idea what it could be.

EVRLET

03-24-2021 01:33 AM

Re: engine oil leak

Valve covers

bigd65

04-02-2021 09:20 AM

Re: engine oil leak

I just fixed mine... was the OIL COOLER BYPASS right above the OIL FILTER..... Cleaned it all up, got a new seal, ALL METAL , from Orielys and put sealer on both sides. I check it often and still dry. I sprayed BRAKE CLEAN all over under there to clean it all up

truckdude239

04-02-2021 09:15 PM

Re: engine oil leak

Could aLso be the valley pan gasket leaking oil requires removing the I take and knock sensors

hatzie

04-03-2021 11:53 AM

Re: engine oil leak

You need to track down exactly where on the engine it's originating.
Rinse it off and see where it comes back and from how high up.

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