Bad timing chain symptoms chevy12/15/2023 ![]() ![]() In the early stages it happens on the first start of the day when ambient temp is ~40 degrees or less, and it usually lasts less than 10 seconds. They all have the original engines, and no chain issues.Ĥ.3L's are known to have piston slap on a cold start up. I service a fleet of 4.3's and several have over 250K, one has over 375K. Timing chain issues are almost non-existant on 4.3's and they are not equipped with chain tensioners. I am going to look at it later this week but again im not used to the v6 set up so i wasnt sure how labor intensive this could honestly be. I thank you guys in advance for any help that you guys can give me. I quickly skimmed through to try and find something but any help would be much appreciated. I guess my question for you guys is does this sound like a timing chain problem? Or does it sound as if it would be something else? I was also wondering if there are any good thread on how to change it if it does so in fact need to be changed. ![]() I have heard that if the cam gear is messed up on a honda it can make noise but it just seems odd. I don't personally own a place, and i come from the Honda world but this just seems odd to me. Call me bias but if i noticed my timing chain/belt was bad i would replace it immediately preventing the obvious failure of the motor. Now call me crazy but it sounds to me as if he is saying two different things. Her mechanic said that as long as she is nice to the truck and lets it warm up she wont need to replace the timing chain for a couple of years. She said when she starts it up its makes a noise then goes away as it warms up and when she shuts it off it makes a "rattle" noise. ![]() She recently called me asking if i could replace her timing chain because her mechanic told her it needs one. ![]()
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