Can somebody help identify this noise?
#1
Can somebody help identify this noise?
Hi,
I was wondering if someone could help identify this noise. It's in my 1990 GMC with a 5.7 tbi. It sounds like valve train noise but I could be wrong. It doesn't really change with engine temperature or anything. It started after driving on the highway for about 300 miles. I was asleep in back and apparently the individual driving was abusing it pretty hard to get home fast. Yes I did rev it to show the noise, but it's shut off and won't be started again until I repair.
#4
I'm agreeing with you on the bent pushrod, and leaning more towards that for sure. Is there any way I can be sure without taking the rockers off by way either a compression test or visually watching it run with the valve covers off?
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