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#1
12-04-2004, 04:46 AM
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w123 diesel fuel injection pump
I have a 300td -84 thats running lean and i wonder how to adjust the amount of fuel. I know how to adjust the timing.
Im also looking for exploded views on the pump. Its the "new" pumptype not the old one that was mounted on the -76 -> 80(?) modells. forgive my bad english, its a bit rusty... 
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#2
12-04-2004, 12:03 PM
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The,
Does the IP have and ALDA on it? If the engine is turbo charged, it has an ALDA. The easiest way to change the fuel delivery is to adjust the ALDA. Use the search to find out about adjusting the ALDA. P E H Last edited by P.E.Haiges; 12-05-2004 at 10:28 AM.
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#4
12-05-2004, 08:08 AM
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Running Lean ??
Please explain what you mean by "running lean".
As far as I know, all diesels should run "lean" ie, there is an excess of air in the combustion chamber, over what is required for complete combustion. The exception to this is at full power, where there is a possibility of over fuelling causing black smoke. Adding more fuel to a diesel at idle, increases the RPM of the motor. If the Injection pumop is under-fuelling, there will be a loss of power causing poor acceleration and possibly a reduction in maximum speed.
__________________
Tony from West Oz. Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine. Josephine '82 300D 390kkm White/Palamino int. Elizabeth '81 280E, sporting a '79 300D engine. Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior Various parts cars including 280E, 230C & 300D in various states of disassembly.
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#6
12-07-2004, 07:26 PM
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Since you can't run lean on a diesel I think maybe you need to check the filters and change them if you don't know when they were last changed. These filters will cause the engine to seem to have low power.
__________________
1977 300D Lost coolant while someone else was driving 1983 300D Can't run without oil 1985 300SD (gone but not forgotten) 1990 300TE 4matic Sold 1991 Yamaha Venture 1975 Kawsaki 250 triple 1974 Honda 200CL 1951 8N Ford 2008 Wildfire 650C
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#7
12-15-2004, 06:56 AM
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Quote:
I want to know HOW TO ADJUST THE AMOUNT OF FUEL on the "new" type of pump nothing else... i know that its one of the three screws positioned under the "lid" in the rear end of the pump but i dont know wich.. and i guess noone here knows either...
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#8
12-15-2004, 12:10 PM
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The,
Any adjustments to the IP are best done by a competent Diesel injection shop. P E H
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#10
12-16-2004, 12:19 PM
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Mercedesshop member gsxr has information on the OM603 injection pump. But to my knowledge, nobody in Diesel Discussion has the information you want about the 617. One of the moderators in the Tech Help section, stevebfl owns a Bosch certified repair center, so he probably has the stuff you want.
__________________
Rick Miley 2014 Tesla Model S 2018 Tesla Model 3 2017 Nissan LEAF Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro Chain Elongation References
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#11
12-16-2004, 07:12 PM
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Skinnerbox has the following pdf file with a breakdown of the 617 IP.
http://skinnerbox.steaky.org/Service/W123/w123CD2/Program/Engine/617/07_1-010.pdf
__________________
85 300CD 83 300TD 78 240D (daughter)
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#12
12-17-2004, 05:43 AM
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i asked the same thing a while ago:
http://www.peachparts.com/shopforum/showthread.php?t=99944&highlight=617+drip+timing
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#13
12-17-2004, 05:50 AM
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There does exist a Bosch Manual on the inline injection pumps.... Randy Leo has one...and I borrowed it long enough to figure out it was way over my head...
I second PEH's suggestion that adjusting the pump is a trained shop activity... unless you have a backup pump and are ready to install it. PEH, that is five times in 2 years we have agreed.... one of us must be slipping.....
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#14
12-17-2004, 06:08 AM
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does anyone have scans or know of an online version of this Bosch manual?
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#15
12-17-2004, 08:47 AM
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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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