slight lifter noise on the right cylinder bank (click click click click sound, very slight). one mechanic suggested going to a 20W 50 weight synthetic oil. can a mechanic adjust the lifter to eliminate the noise or would the heavier weight oil be a better choice?

It really would help to know the color.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

My instinct tells me an M117 motor. If that is the case, check the cam, and if it is good, replace the lifters - they're not that expensive.

__________________
It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D

sorry, thought the make and model was listed in my profile. yes it is a M117, 1991 560SEL.

when checking another repair web site, it mentions that mercedes offers various size shims for the lifters. would properly shimming the noisy lifter fix the click click clicking sound?

I think the shim is put in at assembly to make the fit correct. The lifters are all the same size or length. I think if the oil change does not correct it, it will need a new lifter.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

I know this is an OLD thread, but I am having the same problem with mine, and would like to change out my noisy lifter!

Can anyone direct me to a DIY page that talks about how to do this? Or maybe walk me through it on here? What tools will I need? Thanks!

__________________
Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles

I'd try the full synthetic oil first (make sure it's a full syn - most oils labeled as such aren't). It's cured lifter tick on many a make & model of vehicle.

__________________
A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608

Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.

Tried synthetic oil...make the tick better and less frequent, but it's still there. :[

DO I need any special tools to remove and replace just the lifter that is noisy? Do I need a valve spring compressor for this job? Would be really nice to know what I'm up against since I don't have a repair manual...Thanks!

__________________
Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles

Took it upon myself to figure out what I needed and to do the repair. I borrowed a spring compressor from my local MB Specialist, and grabbed a few HLC's and rocker arms from the junkyard.

Removal of the old HLC's was very straightforward and easy. Just compress the spring, which takes pressure off of the rocker arm, which then allows it to be removed, then unscrew the HLC from the head with a 24mm socket.

I found one of my HLC's completely destroyed! (the noisy one) The collar that holds it together was damaged and just sitting in place, and it's internal spring popped it open when I compressed the valve spring. It fell apart into three pieces when I removed it. It was pretty obvious which one was bad! I'd also like to note for the rest of you DIY guys that a LOT of sludge can build up underneath the HLC's. My destroyed HLC was almost completely full of sludge! I will get pics of it for you guys to see tomorrow. I was shocked. I proceeded to remove all of my HLC's, inspect the rocker arms for damage, and clean the sludge out.

My car is completely tap-free now, and it idles MUCH more smoothly!!

Change your oil, people!!

__________________
Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles

Great! A successful operation. Elsewhere in the forums there is a strong support for using Diesel engine oil Chevron Delo ,Rotella etc in the 103 engine to keep its operational wear tear down due to the high Zinc content in the diesel engine.
mak