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#1
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fuel adjustment screw
hi all is it ok to adjust the fuel adjustment screw at front of the injection pump behind the I.P. pipes
i would like to reduce the fuel a little as its a bit smokey unburnt diesel? i have never touched this screw in all the 16 years i have owned my 940 tdi 1995 all comments most welcome |
#2
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Sure, easy to experiment. Mark the starting position so you can easily return it to your baseline if you encounter any problems. Try testing 1/4 turn increments and see where that gets you.
Although, since your car is turbo, depending on the specifics of excessive smoke behavior, the problem might lie in the LDA or its adjustments. Does it smoke at idle, off-idle, cruise, high RPM/high load?
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1985 744 gle d24t 1985 745 gle d24t |
#3
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940 tdi auto 1995
hi
car only smokes when cold at take of and some times when i put foot down to car is only returning about 28mpg now but thats with no long runs. no smoke when warm but when i start up when hot it leaves a splatter of black soot from exhaust on the ground so I'm thinking this is unburnt diesel what do you think ? |
#4
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940 tdi auto 1995
hi ngoma
what does L.D.A. mean |
#5
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Sounds almost normal, from your description.
LDA is the flying saucer-looking device on the top of the IP. Cuts extra fueling at low turbo boost conditions, sends extra fuel at higher boost conditions.
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1985 744 gle d24t 1985 745 gle d24t |
#6
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940 tdi auto 1995
hi ngoma
thanks for your input. but the splatter of soot is not nice have you seen this before. so do you think leave well alone |
#7
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Can't say, based on your description. Could you have someone take some photos?
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1985 744 gle d24t 1985 745 gle d24t |
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