Evosport crank pulley racketing noise...
#1
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Evosport crank pulley racketing noise...
Using a stethoscope I learned that my crank pulley was making awfully loud racketing. Has anyone seen/heard anything like this on their cars? I drive an '03 CL55 equipped with evosport pulleys and a bunch of other goodies(?).
If someone wants to hear, I'll upload a sound clip once I get a chance. I appreciate the help guys.
If someone wants to hear, I'll upload a sound clip once I get a chance. I appreciate the help guys.
Last edited by leetski; 03-10-2011 at 09:46 AM.
#2
the crank pulley transfers perfectly all the noise coming from the engine and the 55 motors are very mechanically vocal even at idle (lots of clicking and clacking). they all sound like they are worn out and on their last leg as they are fairly loose in terms of tolerances (german school of thoughts)
i think you are hearing just the motor doing its thing...
i think you are hearing just the motor doing its thing...
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#5
Ugghh that is ugly. I agree that this is not part of the 55 motor repertoire. On the other hand the clanging is too fast to be part of the valve train so it must be coming from the crank. My guess is your damper is coming either apart or the whole pulley is lose on the crankshaft.
Let us know.
Let us know.
#6
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if you are hearing it as coming more from the left side (passenger side), then it can just be time to replace your tensioner
ps: I just realized I entered the wrong forum, not CLS this one ... LOL
ps: I just realized I entered the wrong forum, not CLS this one ... LOL
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Ugghh that is ugly. I agree that this is not part of the 55 motor repertoire. On the other hand the clanging is too fast to be part of the valve train so it must be coming from the crank. My guess is your damper is coming either apart or the whole pulley is lose on the crankshaft.
Let us know.
Let us know.
Should I just get the same replacement crank pulley (evosport fully dampened overdrive crankshaft pulley) or look for something a little more durable (other manuf.)? and in what size? I imagine its not a smart thing to go for an OEM crank pulley given that I have a typical evosport setup?
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#8
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None fast enough!
Sorry for the issues you are having first of all.
However, are you sure it is the crank pulley and not one of the tensioners?
Feel free to call us and we can assist you with the problem.
thanks
brad
However, are you sure it is the crank pulley and not one of the tensioners?
Feel free to call us and we can assist you with the problem.
thanks
brad
#9
my take is the noise is must be coming from the crank as it is the fastest spinning part- the clackety-clack rate is too fast to be valvetrain related... so it is either the crank pulley or one of the timing chains tensioners...
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You can never be 100% certain. I used a mechanic's stethoscope until I localized the sound around the inner walls of the crank pulley. I'll take you up on that offer, do you have a number? I appreciate it, thanks.
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i think on the video he has removed the belt... so the tensioners are not spinning... i think...
my take is the noise is must be coming from the crank as it is the fastest spinning part- the clackety-clack rate is too fast to be valvetrain related... so it is either the crank pulley or one of the timing chains tensioners...
my take is the noise is must be coming from the crank as it is the fastest spinning part- the clackety-clack rate is too fast to be valvetrain related... so it is either the crank pulley or one of the timing chains tensioners...
The stethoscope was really a good investment. I got the kind that has two attachments. One is cone shaped and the other is a simple stick. I used the cone shaped one to isolate the knocking to the crank pulley area.
Last edited by leetski; 03-10-2011 at 04:53 PM.
#13
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here you may find more details.
maybe it's just this
https://mbworld.org/forums/w211-amg/...k-anybody.html
maybe it's just this
https://mbworld.org/forums/w211-amg/...k-anybody.html
#14
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wish you it's nothing about internals ..
maybe it's worth isolate external factors by removing not only the belt but also the tensioner pulley.
maybe it's worth isolate external factors by removing not only the belt but also the tensioner pulley.
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None fast enough!
#16
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What is the verdict?
While you are in there I'd replace the tensioner as well it is cheap; perhaps new belts too.
Where is the water pump in relation to that?
While you are in there I'd replace the tensioner as well it is cheap; perhaps new belts too.
Where is the water pump in relation to that?
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To make things interesting, my car battery died the other day. It appears I have a current drain somewhere. So I am torn right now because if I don't drive the car the battery discharges, but if I do, I run the risk of who knows what as evidence from abnormal racketing noise.
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Little overdue. I replaced Evo crank pulley with OEM one. I took apart the Evo crank pulley and learned that the rattling was coming from one of the internal springs. The spring sits inside a slot and over time it may have shrunk causing separation between end of spring and contact point, thus the rattling. The End.