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Knocking

gotmeanewtruck

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gotmeanewtruck Enthusiast

gotmeanewtruck

Posted
Posted

got an 02 sierra 2 wheel dr short cab 4.8

Does anybody have a knocking sound from the engine. Somebody mentioned it

could be the lifters making the noise. used to be worse when it was cold, now its all the time. I had synthetic in it and i thought that that might be the prob cause there wasn't enough lubrication so i switched to reg 5w 30 and it sounds somewhat better. anybody got a clue :rolleyes:

silverado4800 Enthusiast

silverado4800

Posted
Posted

Describe your knocking, is it just at idle, just at start up, is it a light tapping, clicking, or hard knocking. If it is light clicking then it is probably your injectors or even your rockers, nothing to worry about. Its hard to say without some more info on the noise.

gotmeanewtruck Enthusiast

gotmeanewtruck

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The knocking is at an idle speed. Its hard to hear sometimes because of my magna flows, but it sounds like a fast knocking. Has a sort of clicking sound to it too. Hard to explain. I was gonna take it too the dealer but the day i was going to it wasn't doing it. Figures. They would probably tell me its normal anyway.

zshumo Enthusiast

zshumo

Posted
Posted

Is the "clicking" injectors normal? I have an 03 Z71 silverado, 5.3L and it is really pronounced. Much more noticable than my dads 01 yukon and my brothers 01 sierra (both 5.3L).

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