Quote:
Originally posted by Blk02Chevy
I have an '02 Silverado with 4.8 has 20,000 miles. I don't notice any noise at start up but hear a light ticking noise after it is warm. It sounds more like a lifter tapping than a piston knocking. Anyone know of anything like this? I have been to the dealer, they told me about the CSK, I told them that it's knocking after it's warmed up. They did the top engine cleaner. That didn't really do anything but make my truck stink for a few days. I did get the warranty on the engine so I guess I'll see what happens.
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I got the same thing on my '02 5.3L. I'm at about 30k now, but it's been around since I've had the tuck I think. A 5.3L cowoker noticed it but his truck doesn't do it. It's a light tick at all temps, frequency increases with revs, not too noticable unless the windows are down or the hood is up. Sometimes it goes away or I just don't notice it. Truck always gets 93 and I use Castrol Semi-syn 5w-30 every 3k miles. I though it might just be noisy injectors but 2 bottles of cleaner later, no difference...:thinking
The STEALTH: 2002 Z85 ECSB 2wd 1500 w/5.3L 3.73 factory Locker & Trany Cooler: $21,556 Bran New Out da Door PERFORMANCE: Flowmaster American Thunder (30 series) single in/dual out Cat-back, De-Screened MAF Sensor, UPD Intake, Diablo Predator: $929 shipped. BEST RUN: 14.8@92.8 (hauling my subs, tool box, spare tire, carseat...)