Suzzie, the CLK 500 so this happened
- Thread starter merc85
- Start date
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Cheers Lee, yes she's a good car got a trip to London next Thursday so that will give her a good run
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OP
EGR valve time,
Fiddly is the way to describe it due to lack of room,
The replacement “peirburg” unit same as fitted when new came without the exhaust tube to inlet manifold so I found it easier to leave this unbolted but still in it’s original position.
Remove the Air flow meter, and breather box from the manifold.
Unbolting the the Egr valve which is held in place by 2 E drives. The bracket for the atf dipstick also needs tobe removed but dip stick does not need to come out of the gearbox, Loom is held to this bracket and will need tobe unclip from the bracket.
Unclip the Egr plug connector and vacuum hose from the inlet disconnect this from the unit not the manifold it eases replacement of the new part.
Once all unbolted swing the entire unit out so you access the 24mm nut for the exhaust tube.
I used rust off by worth and the nut cracked off Nicely being careful not to damage the exhaust tube.
Now it’s disconnected you can swing the unit up and out and refit the new item in reverse order.
New unit back in.
Fiddly is the way to describe it due to lack of room,
The replacement “peirburg” unit same as fitted when new came without the exhaust tube to inlet manifold so I found it easier to leave this unbolted but still in it’s original position.
Remove the Air flow meter, and breather box from the manifold.
Unbolting the the Egr valve which is held in place by 2 E drives. The bracket for the atf dipstick also needs tobe removed but dip stick does not need to come out of the gearbox, Loom is held to this bracket and will need tobe unclip from the bracket.
Unclip the Egr plug connector and vacuum hose from the inlet disconnect this from the unit not the manifold it eases replacement of the new part.
Once all unbolted swing the entire unit out so you access the 24mm nut for the exhaust tube.
I used rust off by worth and the nut cracked off Nicely being careful not to damage the exhaust tube.
Now it’s disconnected you can swing the unit up and out and refit the new item in reverse order.
New unit back in.
Last edited:
OP
OP
Did it cure the tap lol 
nope but the car feels ultra smooth and sounds very quiet.
Source of the tap may be a slack lifter as she doesn’t do it all the time usually only from “cold” and can only be heard inside the car with roof up accelerating under partial load up steep hills for instance.
Or of course it just may well being picky I know the lumps are generally louder than other m’s.
Still it does seem quieter and it was nice being able to clean up alittle too.
nope but the car feels ultra smooth and sounds very quiet.Source of the tap may be a slack lifter as she doesn’t do it all the time usually only from “cold” and can only be heard inside the car with roof up accelerating under partial load up steep hills for instance.
Or of course it just may well being picky I know the lumps are generally louder than other m’s.
Still it does seem quieter and it was nice being able to clean up alittle too.
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EGRs are orrible and should be banned.
How on earth we ever got from simple combustion engines to making them so dammed complicated is anyones guess.
How on earth we ever got from simple combustion engines to making them so dammed complicated is anyones guess.
Did you find the source of the tap?Did it cure the tap lol
Source of the tap may be a slack lifter as she doesn’t do it all the time usually only from “cold” and can only be heard inside the car with roof up accelerating under partial load up steep hills for instance.
Or of course it just may well being picky I know the lumps are generally louder than other m’s.
Still it does seem quieter and it was nice being able to clean up alittle too.
OP
OP
In my head i think lol.
I think and it is just a inkling the very back hydraulic lifter is tappingm on the RH bank,
i can get these at a very reasonable price through work, so when the weather warms up im going to take the cam cover off and investigate,
It is very minor atm and tbh all these m113's suffer with valve train noises to some degree, but i am picky lol
Glad to hear you're on top of it.
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Maybe, i think she has sat about abit at 73k its not high but they could get gummed up if its had short trips etc.
anyway i've ordered all 8 new lifters so may aswel replace them all job done then, It will also give me a chance to reseal the rocker covers and give them a good clean up perhaps even paint them, nothing ott just silver as they should be.
OP
OP
So was going to do the above until i found this??
www.tsbsearch.com
P-B-07.00/21D Mercedes-Benz Technical Service Bulletin
P-B-07.00/21D Mercedes-Benz Technical Service Bulletin
www.tsbsearch.com
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Are you keeping it now?
