I have fighting with this off and on for two months now. When the car is in gear with the brake on there is a slight tick sometimes almost goes away. when out of gear and the rpms go up it gets a little louder. If I rev it to 2 or 3 thousand rpm it is very loud almost sound like my neighbors ram deisel.
I have replaced the lifters and changed cam too. I have tried to narrowed it down with a stethascope, but can't find it.

Sometimes when I rev it up, it almost sounds like something it rattling or banging around. Any input on this would be helpful.

Thanks,
Jim

Your belt tensioner pulley damper (small shock absorber right next to oil dipstick) could be making the noise you hear. Check both the upper and lower bushings for wear

Good luck

__________________
-Paul-
'01 E430, Sport 72,000 mi
'98 C280, 126,500 mi

__________________
J.H.
'86 300E

I am with these guys on this one

Mine is starting to rattle a little, as a matter of fact I was about to go down to the garage and fix it!

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776

Thanks guys,
How do I test it? Is it easy to see if it's bad? Do you know the what the cost of a new tensioner is?

Thanks again,
Jim

Yeah thats what it sounds like I had mine rereplaced on my 190e and 300ce this year the independents charge me about 500 bills for each car I think the parts them selves are around 300 dollars if you replace everything,

before anything else, switch to a lighter oil.

Yup... sounds like the top bushing of your belt tensioner damper is getting sloppy.

Here's a 25 cents fix. Insert an o-ring between the top bushing and the washer. This will pick up the slack in the bushing and stop the rattle. I did this 10k miles ago and it is still effective.

__________________
Reno

'93 300E 4Matic
'98 Nissan Altima
'00 Yamaha Road Star Silverado