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#1
11-04-2005, 12:49 PM
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Idling questions
When i start my car it idles right around 600 and shakes and sputters, but as soon as I rev the engine and then let it Idle it steadies consistently at around 750. Ive seen posts about the Alda or something like that and the rack dampener...Could this be the issue behind this. Please educate me on some of these issues. Thanks guys.
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1983 300SD White with Grey interior Last edited by JMan300sd; 11-04-2005 at 01:20 PM. 
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#2
11-04-2005, 01:01 PM
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It sounds to me like a cylinder isn't firing off until you rev the engine.
Check the glow plugs resistances and make sure they are all still good. Bet you have (1) bad plug. Michael
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Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E
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#4
11-04-2005, 01:10 PM
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I also forgot to mention there is a big air bubble in the prefilter and air squeezes out when I use the primer pump. I am changing out the primer and the two fuel filters this weekend and hopefully that will get rid of the air in the fuel line (I really hope). But would this cause the initial low idling and stumble.
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1983 300SD White with Grey interior
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#5
11-04-2005, 01:17 PM
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Quote:
 better check and edit the typo......
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#7
11-04-2005, 01:37 PM
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Quote:
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#8
11-04-2005, 02:13 PM
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I have the same issue in my 82-300SD. My engine idle's aroung 500-550. I have adjusted the idle adjust screw. I broke it. A friend and I repaired it by fixing a L flange to the back of the full-load stop screw with the idle screw in the exact same position it was before. We couldnt adjust the screw any futher down. It sputters and shakes a lot until i hit the pedal and then it will settle down back at 500-550 and be fine.
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#9
11-08-2005, 10:31 PM
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Alright....I changed my two fuel filters and the primer pump. I still have an air bubble in the prefilter and I still have an idling problem.
Like I said, I Idle right around 600 immediatley at start up, then If I rev at all it settles to a nice 750. Problem is after its been up on the highway and comes back to park and idle it sits at 900. WTF! Can all this be explained by the rack damper? Also...about the air leak in my fuel line. Where else should I be looking? Somethin makes me feel like I didnt tighten that primer pump as much I need to, but its very hard to get at. I do need some better tools.
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1983 300SD White with Grey interior
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