Lifters replaced ... new bad noise ... :( - Page 2 - PeachParts Mercedes-Benz Forum

BodhiBenz1987 · #1 09-08-2006, 08:57 PM

I had my ticky lifters replaced on the 603, by my very trusted and very knowledgable indy, this week. Well, on first startup the car is super smooth ... sounds great. As soon as I hit the pedal, it sounds like a chainsaw under the hood, and THEN, when it returns to idle, there's a loud ticking. When I took it back in and asked my indy about it, he noticed the ticking too (but not the buzzsaw sound at low rpm ... it didn't seem to make as much noise when we went on a "test drive"). He checked all the injectors (loosened nuts), and they were fine. When we drove it he thought it sounded normal, and to be honest, it did at that moment ... we were driving around city so there was some outside noise. When I get it on the quite back roads, it just sounds wretched. He said to drive it for a week, bring it back and if it still sounds bad, maybe he can replace the timing chain ... but beyond that, he doesn't think it would be worth sinking money into.

This has me very upset ... this mechanic is super ... if there was something fixable, he would find it and fix it. He has worked on these cars for years and years. I trust he will figure this out. But should I be really worried? Obviously whatever is wrong happened while the lifters were being replaced ... not that it caused it, but maybe something that was waiting to go wrong? It ticked before, but did not make this kind of noise. What else could it be? My indy mentioned it might be a piston. Could it be that one of the new lifters is just a dud (causing the new tick)? Would the buzz noise be from a bad timing chain?

I really am not ready to lose this car at this point. It is just too nice, and ran so great.