2004 Z-71 Suburban Engine Noise
#1
2004 Z-71 Suburban Engine Noise
Hello Chevy Forum! I have a 04' suburban z 71 with a funny noise in the engine compartment. It sound as though it could be a belt squeek but isn't. It is a steady noise and appears to be coming from the engine on the passenger side. I took a piece of hose and stuck inside the oil filler tube, and it seems to be coming from inside. I have pulled the valve covers and it is oiling through all of the push rods and doesn't seem to have a bent one? A friend told me it could be a bad lifter but at this point, I am lost. any help would be greatly appreciated. Thanks to all for your time in advance, this forum has been a great tool for me!!!! Mike
ps. forgot to mention it has 131,000 miles. Engine is really clean.
ps. forgot to mention it has 131,000 miles. Engine is really clean.
#3
I tried both belts already and thanks for the comment. I also pulled both valve covers off and really didn't see anything. Engine is very clean with no build up. Almost sounds like a push rod rubbing the head on an older motor???
#4
Could be the belt tensioner. These things produce a strange squeak. I found this to be the culprit most of the time. last time I thought I had a bad fuel pump, the sound throws that far under the truck. then I though a belt, lifter. etc. Turns out it was the belt tensioner going bad. happened to me twice.
sometime these things squeak when the truck will start up for a few minutes. replace the tensioner and see if it goes away. if not, check your water pump.
sometime these things squeak when the truck will start up for a few minutes. replace the tensioner and see if it goes away. if not, check your water pump.
Last edited by NMguy; December 12th, 2011 at 3:05 AM.
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