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#1
08-29-2008, 10:58 PM
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Another Vibration thread after repairs
So I Replaced/tuned
-motor mounts -small motor shocks -rubber tranny mount -adjusted IP timing -diesel purge-(did run smother while direct DP but I've been told that's always the case) -valve adjustment -Checked for air leak and fuel leaks -cleaned tank strainer -recent air filter and still Have a vibration that shakes the car enough to rattle the exhaust when I'm stopped. When I move it to Park the idle rises and the vibration softens by about 60%. Thanks for any ideas
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1980 300td (non turbo)225,000 1982 yamaha xs650, I've also once loved 79 Bmw 530i, 69 VW buss, 78 Honda Acc, 79 Jeep wagoneer, 76 Peugeot 504, 82 fiat spider 124, a bunch of guitars and a banjo www.virb.com/sethlael Last edited by seth411; 08-31-2008 at 08:34 PM. 
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#2
08-29-2008, 11:07 PM
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Have you done a valve adjustment and replaced all the filters?
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#3
08-29-2008, 11:18 PM
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Yeah forgot to add that, and I even checked the valves twice because I thought I could have possibly gotten them off.
Somethings I haven't checked are the chain stretch and pop tested my injectors. My compression is all 420ish except two that are 320. I've also checked for air leaks and fuel leaks and everything looks good. I'm bewildered why it smooths out when its in park. Could it be as simple as my idle is to high? It sure doesn't take off the line when I let my foot off the brake.
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1980 300td (non turbo)225,000 1982 yamaha xs650, I've also once loved 79 Bmw 530i, 69 VW buss, 78 Honda Acc, 79 Jeep wagoneer, 76 Peugeot 504, 82 fiat spider 124, a bunch of guitars and a banjo www.virb.com/sethlael
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#4
08-29-2008, 11:24 PM
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That 100 psi difference in two cylinders can cause that as well.
When you checked the compression did you do a dry then a wet test? You may want to consider a leak down test next.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#5
08-30-2008, 08:53 AM
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What is the idle RPM?
Both of mine shake, at idle of about 600, at 750 or so they smooth out nice.
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83 300SD Dark Silver Dark brown inside
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#6
08-30-2008, 09:07 AM
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Do you have a proper cigar hose?
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#7
08-31-2008, 06:07 PM
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Unfortunately I didn't do a wet test and did not do a leak down test.
I'll have to try that out on Thursday when its not 105 out. That second oil pan on these cars is really a pooper. I hope it doesn't come down to a rebuild. As far as the cigar hose I've read quite a few post that it was supposed to help with pulsing in the fuel system, but many people have not noticed a difference with or with out them. How do you test your idle on a diesel. I thought it was an expensive/part? Thanks for the help.
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1980 300td (non turbo)225,000 1982 yamaha xs650, I've also once loved 79 Bmw 530i, 69 VW buss, 78 Honda Acc, 79 Jeep wagoneer, 76 Peugeot 504, 82 fiat spider 124, a bunch of guitars and a banjo www.virb.com/sethlael
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#8
08-31-2008, 06:56 PM
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injectors?
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99 E300 Turbodiesel 100k
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#9
08-31-2008, 08:11 PM
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You said "adjusted IP", You adjusted the timing?
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#10
08-31-2008, 08:35 PM
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I updated original post
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1980 300td (non turbo)225,000 1982 yamaha xs650, I've also once loved 79 Bmw 530i, 69 VW buss, 78 Honda Acc, 79 Jeep wagoneer, 76 Peugeot 504, 82 fiat spider 124, a bunch of guitars and a banjo www.virb.com/sethlael
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#11
08-31-2008, 08:49 PM
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I didn't see any mention of doing a rack damper pin adjustment, that could be it. If all else fails, I would suggest servicing your injectors (clean, test, and balance them). I am currently having a rough idle problem that I am nearly certain is related to the injectors. Is your vibration accompanied by any excess smoke?
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99 E300 Turbodiesel 100k
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