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#46
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Greazer makes and sells a replacement overflow valve spring. I have ~1000 miles on mine, does well.
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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap |
#47
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The fuel tank is brand new, are are the fuel lines along with rebuilt fuel injectors. Good to know! I'll be reaching out to him soon
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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out 1990 300SEL Smoke Silver (Parting out) 1991 350SDL Blackberry Metallic (481) "The thing is Bob, its not that I'm lazy...its that I just don't care." |
#48
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My euro, which has the same engine as this and injection pump will make the same hill at 55 in 3rd. Yes it is a stick shift. I don't know what else is on your wagon if there is an ac compressor that can drag the engine. Also with out an ALDA you will experience tons of black smoke if you attempt to floor it to make it up a grade. Slowly n steady wins the race Was you wagon ordered for the states or was in imported in the day? I ask because they fashioned some crude egr stuff to help with pollution in the day. This can/could case a clogged intake, not enough oxygen to turn into energy etc.
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#49
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Reading another thread that has a photo of your injection pump. I suppose you have never replaced the o rings on the M pump? Nor the copper washers? Also ever timed the thing as I see it appears to have never had a valve removed.
2 is an o ring and 5 is a copper crush washer. These being bad or the valve not being torqued correctly can also cause power issues. I replaced all my o rings with ones found in the assortment you can buy, I also bought the correct socket and torqued them down correctly. They all had bad o rings and were not tight. So I opted not to replace the crush washers. It is also wise to learn about air density, the shortest answer is that when temps are cold there is less oxygen in the air thus it means less oxygen for a car to burn for power. Diesels really heavily on the correct amount of fuel and air aka oxygen to preform their bests. USATODAY.com I need to shower and coffee now Post pics of your engine, and closes ups....it may be easy for us who have worked on those engines to point out things that they less trained eye can see or doesn't know what it is. I hate to toot my own horn, but owning a euro w123 has taught me a HUGE amount about how the euros differ from the us. Also my 78 being a us version...I have both examples to prob
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Last edited by cooljjay; 03-21-2015 at 01:34 PM. |
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no 2 is the ring, if no leakage no use of changing copper washer or ring either no 4 on the other hand is delivery/performance related and if worn must be replaced.... .
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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded next wish/project: w114 coupe OM603 powered |
#51
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All of my orings where hard, square and torn. These can leak internally and never be known, they can also suck air and not be know... I suppose this goes along with the starter being maybe of fairy dust and unicorn horns and thus never needing to be replaced. Oh I knew I had PROOF, Judge Judy here I come Old vers new.....with no leaks!
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#52
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Only ancillaries are the power steering pump and the alternator. No way an 80s G-Class was ordered, it was imported privately but you are right in that they did bodge together an EGR system (It was the very first thing that I ripped out) Now that you mention this, i've never taken the intake manifold off but I do remember what my 603 intake looked like when I did my glow plugs a few months back. The 300GD air intake tube does have a pneumatic "sensor" which will tell you if the air filter is blocked but I'm don't think a clogged manifold would trip it. Hmm, that could be worth looking into when I have some time this week.
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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out 1990 300SEL Smoke Silver (Parting out) 1991 350SDL Blackberry Metallic (481) "The thing is Bob, its not that I'm lazy...its that I just don't care." |
#53
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The OM617 did see a revision where it gained a few horse power. My 78 and my 82 all though both n/a's have a horse power difference of 17 horsepower and that is FACTORY. I may have a bigger difference as I am not positive on the compression numbers. Its not the auto that makes it slower its the engine and possible the rear end combo thus it is impossible to judge two "euro" imported Mercedes. Power loss can come from anything from old grease in the rear to a power steering belt to tight... That is the issue here, "NO ONE" will be able to diagnose your issue or if there is any. All we can do is shoot out ideas, and hope they are followed...instead they are turned down and me personal I feel like, Why should I even bother giving help?
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#54
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Since learning about the issue in the first place I have done jobs that I have never done before and learned a lot in the process. I have rebuilt my injectors, replaced the entire fuel tank and the lines, did my first valve adjustment, and compression test and plenty of other smaller jobs along the way. All of the above have yielded small albeit positive results but I still have a ways to go. A comparative analysis was the entire reason that I pulled the lift pump in the first place. If one pump performed considerably different then the other I would know that i'm on to something. If there was no change I would know that I would need to look elsewhere. Timing will probably be my next big project (And FYI any project I do I have to do alone with absolutely no help as there is no one to help me.) Time is my #1 most limited resource and I don't have a garage big enough to work on the truck so unless I have the rare combination of free time with good weather then I can only go at the problems one small step at a time. This will continue to be a slow project. I have followed most if not all of the ideas presented in this thread including yours.
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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out 1990 300SEL Smoke Silver (Parting out) 1991 350SDL Blackberry Metallic (481) "The thing is Bob, its not that I'm lazy...its that I just don't care." |
#55
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You've already focused on the lift pump, which is also a very good candidate. Rebuild kits are available. The pressure relief valve spring is in the same camp, I'd highly recommend new from Greazzer. Has the injection pump timing ever been tested / set?
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Respectfully, /s/ M. Dillon '87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted '95 124.131 (E300) "Sapphire", 380k miles '73 Balboa 20 "Sanctification" Charleston SC |
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