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#16
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Not much left to check.
Air Leak? Low Fuel Supply Pressure? Or: Long Fuel Pressure Relief Valve/Overflow Valve Thread Fuel pressure relief valve adjustment - PeachParts Mercedes ShopForum
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84 300D, 82 Volvo 244Gl Diesel |
#17
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Just an update, I replaced the motor mounts, one of the engine shocks, tranny mount, and adjusted the current rack damper bolt.
All with no luck Going to try to find a new rack damper bolt at the pick n pull tomorrow. I see a tiny amount of fuel around a couple of the injectors. Fuel lines are new, maybe the hard lines are leaking a tiny bit?
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#18
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Quote:
It's inside the lift pump somewhere?
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#19
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The RD bolt (pin) may be just as worn out as your current one.
They are available new, I think, check the buy parts button at the top of the page. Rack damper bolt/pin #000 074 26 74 and the seal ring # 002 997 85 45.
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83 SD 84 CD |
#20
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Make sure your odo is good, check for fuel leaks.
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83 SD 84 CD |
#21
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Quote:
Also, there was oil on the old one when I removed it, I'm guessing that's normal? Quote:
That's less my concern than the hot idle shaking. Looks like the valve came out of the top left part of the lift pump?
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#22
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Yeah, a gold one should be okay, there'll be oil on it. Pull it and see how much pressure the pin takes before moving, should be pretty stiff.
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83 SD 84 CD |
#23
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Quote:
Quote:
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#24
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So no gold rack damper bolts at pick n pull
There was a steel one that had lots of room left to be screwed into it's current IP and the spring is definitely stiffer than the current one. (although I pushed and not pulled, should I try the latter?) Didn't make any difference. I also tried a compression test today just to make sure. Glad I did because I was pleasantly surprised: 440 415 440 405 420 (front to back) It's only got 153k miles on it but does have some blowby so I was expecting a little lower. The cylinder with 405 compression (#5?) had a little bit of oil on the glow plug when I pulled it. Is that anything to be concerned about? There's still a small amount of fuel accumulating around the injectors that concerns me. I'm going to try to track down a gold RD bolt I can borrow from someone, but this really seems like a fuel issue to me. IP timing? Fuel pressure?
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#25
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Adjust the valves and check the compression again, if you hadn't before the first time.
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83 SD 84 CD |
#26
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Quote:
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#27
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Broke down and paid $67 for the new rack damper. Lessened the shake a little bit but not much.
I also replace all my injector return lines as they were starting to leak. I'm getting a buildup of vacuum in the fuel tank, I guess I have a clogged vent line. Doesn't affect the shaking if the fuel cap is off, though. But, I think the pressure was causing the injector return lines to fail prematurely. When I started taking them off they were gushing fuel like I've never seen. When I pulled the fuel tank cap off the gushing stopped. If I pump the primer pump I can hear air coming from somewhere around the IP but can't tell where. This is driving me nuts
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#28
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Oh, and all the fuel lines are good, no leaks. I also made a fuel tank in a jar to eliminate everything below the lift pump.
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
#29
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dang it, I read through this cliff-hanger and found that the last pages are all torn out...any conclusion? I might be stuck in the same novella myself, so I'd like to know how it ends.
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'83 300SD - daily driver '97 Dodge Cummins '60 & '64 Minis ...etc... |
#30
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Upped the idle a little bit and that's about all.
The shake went down a little but I ended up selling the car like that, I don't think the new owner even noticed really.
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New, Used & Rebuilt Parts for Classic Mercedes mbzparts.com |
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