Vibration ,engine or ? - PeachParts Mercedes-Benz Forum

ray m · #1 09-23-2007, 10:55 PM

I changed the motor mounts and the front flex disc. I removed the trans mount and it looked good so i put it back. The rear flex disc is ok. I did valve a adjustment. So far as i could tell the drive shaft support looked good seemed to me to be solid, but I'm not that farmiliar with this. Tie rods were replaced. I increased the idle speed with the idle screw. still it vibrates like the mounts or trans mount were bad. Could it be something with the Injection pump. ANY HELP AT ALL IS APPRECIATED. RAY M

toomany MBZ · #2 09-23-2007, 11:08 PM

Car please.

ray m · #3 09-23-2007, 11:14 PM

As often as I've been here I should know better to start with the car 1980 300 d
Thanks for the heads up. Ray

ray m · #4 09-23-2007, 11:32 PM

This is a car i got 2 months ago.Is it possible that he may have removed the axle and did not mark it to replace it in the correct alignment. Ray M

ray m · #5 09-23-2007, 11:38 PM

Is there a rack damper bolt on this model in1980? 300d

toomany MBZ · #6 09-24-2007, 03:36 PM

Quote:

Originally Posted by ray m

Is there a rack damper bolt on this model in1980? 300d Turbo, yes.

If shaking, during idle, you won't be able to tell if the drive shaft was installed incorrectly. I would adjust idle back to 750 rpm, this is not the problem, does it smooth out at a higher rpm?

ray m · #7 09-24-2007, 08:08 PM

Quote:

Originally Posted by toomany MBZ

If shaking, during idle, you won't be able to tell if the drive shaft was installed incorrectly. I would adjust idle back to 750 rpm, this is not the problem, does it smooth out at a higher rpm?

It doesn't smooth out at a higher rpm. I'm stumped.

toomany MBZ · #8 09-25-2007, 06:32 AM

Have you cracked the fuel lines at each injector to see if there's any difference? May isolate an offending cylinder.

1990cq · #9 09-25-2007, 02:53 PM

Sounds exactly like a rack damper bolt. I'm not sure if this car has it but I believe it does...

toomany MBZ · #10 09-25-2007, 05:00 PM

RD bolts on turbos only, and it smooths out above 1000 rpm.

ray m · #11 09-26-2007, 12:51 AM

Quote:

Originally Posted by toomany MBZ

Have you cracked the fuel lines at each injector to see if there's any difference? May isolate an offending cylinder.

i'LL TRY THIS OVER THE WEEKEND tHANKS RAY M

Biodiesel300TD · #12 09-26-2007, 10:22 AM

Could be a bad injector, could be low compression on one cylinder. Does you car have engine shocks. Those may help a little.

BTW, you seem to type with all caps a lots, can I ask why?

AMH · #13 09-26-2007, 12:39 PM

IS THIS TYPING WITH ALL CAPS?

OR IS THIS TYPING WITH ALL CAPS?

toomany MBZ · #14 09-26-2007, 02:31 PM

Quote:

Originally Posted by AMH

IS THIS TYPING WITH ALL CAPS?

OR IS THIS TYPING WITH ALL CAPS?

Both, or Both

ray m · #15 09-28-2007, 01:47 AM

Quote:

Originally Posted by Biodiesel300TD

Could be a bad injector, could be low compression on one cylinder. Does you car have engine shocks. Those may help a little.

BTW, you seem to type with all caps a lots, can I ask why?

I replaced the engine shocks,motor mounts Front flex disc and checked the trans mount.