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#1
06-05-2008, 03:14 PM
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85 300D fuel and turbo questions
Does anyone here know how to turn up the fuel on one of these? I recently made some modifications to my intake and exhaust systems, which increased the performance, but caused the idle speed to go up to 1000 - 1100 RPMs. I was reading in the service manual about turning the idle speed down and the instructions said to disconnect the throttle linkage and adjust the idle speed at the slotted screw and lock nut on the injection pump.
With the engine running, when I disconnected the throttle linkage, the RPMs immediately dropped to about 700-750 (normal). I adjusted the linkage to rest at this normal idle speed, but now the car has no accelerator pedal. I have to depress the pedal to the floor now and it is still slow. It seems there simply isn't enough fuel being delivered. Do you folks know anything that might help with this condition? 
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#2
06-05-2008, 03:56 PM
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10:1 your ALDA is not getting boost signal....
__________________
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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#4
06-05-2008, 06:07 PM
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The round metal thing on the injection pump
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#5
06-05-2008, 08:41 PM
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You can search for more info on this site, but the basics of ALDA are that it's a device that reduces fueling during periods of low boost combined with high accelerator input in order to reduce smoke and increase fuel economy.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#6
06-05-2008, 10:44 PM
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Quote:
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#7
06-05-2008, 11:44 PM
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Quote:
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#8
06-06-2008, 12:05 AM
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That pivot arm at the firewall slips often, 10mm I think to adjust. And about 5 minutes.
__________________
I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#9
06-06-2008, 01:54 AM
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I don't know if this site will cover what you need:
http://www.pauldrayton.com/uploadfiles/merc/Service/W123/Index/617Tindex.html Also you did not say what part of the linkage you adjusted.
__________________
84 300D, 82 Volvo 244Gl Diesel
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