97' E420 Engine noise
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From: So Cal
1997 E420
97' E420 Engine noise
I have a 97' E420 with 55K miles. It has developed a "click" in the valve train. Kind of like a stuck valve aor lifter. It has come and gone a couple of times. Any ideas? Thanks.
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From: Houston
E55
If the noise is a ticking that typically happens right after you start the car it's probably a lifter that has a leak and collapses while sitting. This is more pronounced when the car is hot or has been setting for a long time. If it ticks a few times and then goes away it's annoying but basically harmless. If it ticks constantly it needs attention.
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From: SFV, SoCal
2022 CLS450 AMG 4Matic
Mine did the exact same thing and we have discussed this in another thread. It was the lifters that made the noise. It started off doing it every once in a while and then it became constant and a lot louder. My MB mechanic suggested switching to fully synthetic oil like Mobil 1 and adding an additive to clean the lifters that is sold by the MB dealer (you can also find these at Pep Boys). The ticking seemed to quiet for a while and then came back just the same. The final outcome was to replace the lifters. The MB dealer wanted over $3000 bucks for this job but thank God for my mechanic as he only charged me about $1500 bucks and replaced the timing chain and some other items in there in which I don't remember now and included warranty. The car (knock on wood) runs like brand new and better than before I bought it! I continue to use Mobil 1 fully syn. oil now and have not had anymore problems since. Good luck and hopefully you can cure your problem if it's minor with the syn. oil and lifter cleaning additive...
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From: So Cal
1997 E420
Thanks for the input fellas! Im gonna try a "top-engine clean" oil additive, then switch from 20-50 Vslvoline to a Synthetic and see whats up then. Hope for the best I guess, but hey, if I need lifters, that would be an excellent time to replace the camshafts with something better and then I could...
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Joined: Mar 2003
Posts: 5,546
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From: SFV, SoCal
2022 CLS450 AMG 4Matic
Originally posted by kennygss
Thanks for the input fellas! Im gonna try a "top-engine clean" oil additive, then switch from 20-50 Vslvoline to a Synthetic and see whats up then. Hope for the best I guess, but hey, if I need lifters, that would be an excellent time to replace the camshafts with something better and then I could...
Thanks for the input fellas! Im gonna try a "top-engine clean" oil additive, then switch from 20-50 Vslvoline to a Synthetic and see whats up then. Hope for the best I guess, but hey, if I need lifters, that would be an excellent time to replace the camshafts with something better and then I could...
