nurkvinny Posted May 13, 2009 Report Share Posted May 13, 2009 Here is a video of a Z06 I am looking at. During the first 30 or so seconds, there is a ticking sound. I am on a shitty laptop with horrible speakers. Is it "piston slap"? Is it injectors? Is it something else??? Opinions please Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 13, 2009 Report Share Posted May 13, 2009 piston slap on a cold lsx engine is normal...there is a tsb on it infact. but to hard to tell what it is threw the net... i'd like to hear it with the stethoscope. Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 13, 2009 Author Report Share Posted May 13, 2009 Me too, it's just several hundred miles away... for now. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 13, 2009 Report Share Posted May 13, 2009 heres one tsb File In Section: 06 - Engine/Propulsion System Bulletin No.: 02-06-01-038 Date: December, 2002 TECHNICAL Subject: Engine Knock or Lifter Noise (Replace 0-Ring) Models: 2001-2002 Chevrolet Camaro 2001-2003 Chevrolet Corvette 2001-2002 Pontiac Firebird 2002-2003 Cadillac Escalade, Escalade EXT 2000-2003 Chevrolet Suburban, Tahoe 2001-2003 Chevrolet Silverado 2002-2003 Chevrolet Avalanche 2000-2003 GMC Yukon, Yukon XL 2001-2003 GMC Sierra with 4.8L, 5.3L, 5.7L or 6.0L V8 Engine (VINs V, T, Z, G, S, N, U - RPOs LR4, LM7, L59, LS1, LS6, LQ9, LQ4) Condition Some customers may comment on an engine tick noise. The distinguishing characteristic of this condition is that it likely will have been present since new, and is typically noticed within the first 161-322 km (100-200 mi). The noise may often be diagnosed as a collapsed lifter. Additionally, the noise may be present at cold start and appear to diminish and then return as the engine warms to operating temperature. This noise is different from other noises that may begin to occur at 3219-4828 km (2000-3000 mi). Cause The 0-ring seal between the oil pump screen and the oil pump may be cut, causing aeration of the oil. Correction Inspect the 0-ring seal and replace as necessary. Use the applicable part number listed below. Refer to the Engine Mechanical sub-section of the appropriate Service Manual. i cant find the other tsb on the piston slap..tho i did see the one about the rings. now it could be a exhaust leak, but to hard to tell Quote Link to comment Share on other sites More sharing options...
Cordell Posted May 13, 2009 Report Share Posted May 13, 2009 Piston slap always comes up when discussing an LS engine, but I wouldn't put a bent pushrod out of question. These are notorious for getting bent from over reving, the lifters also tick but weren't much of an issue in later years. I'm leaning towards bent pushrods, but who the hell can really tell over the net. Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 13, 2009 Author Report Share Posted May 13, 2009 He's already offered to drive it the 350ish miles here, so I don't think it's anything too drastic. I just wish my PC was up and running so I could listen to it on my 5.1 speakers. And Rob, I know about the TSB's, that's why I was asking. Quote Link to comment Share on other sites More sharing options...
Kevin R. Posted May 13, 2009 Report Share Posted May 13, 2009 I don't know about the mysterious sound, but it sure as hell looks clean as fuck. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted May 13, 2009 Report Share Posted May 13, 2009 GM says its normal. Quote Link to comment Share on other sites More sharing options...
AJ Posted May 14, 2009 Report Share Posted May 14, 2009 just a FYI mine made that noise too, lifters fix the problem as did the balancer (i had a bent crank pulley, pretty common on vettes and make a noise like that) i recommend the GM Racing lifters (also known as the CTS-V lifters) i have them and also starkmaster has them and both cars are running great. PM me if you decide to get them and i'll get you hooked up. Quote Link to comment Share on other sites More sharing options...
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