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L76 rod knock or lifter noise?

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L76 rod knock or lifter noise?

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Jan 31, 2016 | 09:04 AM

#1

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L76 rod knock or lifter noise?

So my wife just fired up her 09 G8 GT and it was making what sounded like a rod knocking and filled the garage with black smoke out the exhaust. I ran out to the garage and told her to shut it off. I then checked all the fluids and it's full. Oil has no coolant in it that I've seen on the dipstick. Going to go drain the oil to make sure though. I just fired it up just now so I could hear the noise myself and the knocking is gone but the valvetrain sounds loud way louder than the normal lifter tick. I have no experience with the L76 yet, so was hoping someone has some suggestions on possibilities to check out besides drain the oil and check it and doing a compression check.

Last edited by snketr; Jan 31, 2016 at 07:38 PM.

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Jan 31, 2016 | 09:23 AM

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pull off the valve covers and see if you have any unusually loose rockers.

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Feb 1, 2016 | 11:57 AM

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The stock DOD lifters are prone to going bad.

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Feb 1, 2016 | 01:02 PM

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Quote:

Originally Posted by mchicia1

The stock DOD lifters are prone to going bad.

Yeah, after doing some research and listening to it, I just ordered a AFM/DOD delete kit and a cam.

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Feb 2, 2016 | 06:52 AM

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The factory Eaton lifters are crap. Even the later redesigned Delphi lifters leave something to be desired. DOD delete kit is about the best option.

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Feb 2, 2016 | 12:42 PM

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Quote:

Originally Posted by snketr

Yeah, after doing some research and listening to it, I just ordered a AFM/DOD delete kit and a cam.

Do yourself a favor and at least put in the Morel 5315 lifters.

I used LS7s in mine and I am about to swap them out because of on and off again low RPM ticking.

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