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#1
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W115 240D fuel problem ?
Hi All,
I woud be most grateful for your help again. I tried to start my car after a few years without luck. Members on the forum gave me good advice regarding air in the fuel system and to hand pump to expel air. I have tried this bit I feel no resistance or pressure when I pump system. Could anyone put me on the right path on the procedure to take, I attach 2 photos. Could someone tell me what they are. One appears to be a soloniod and the one that is pink is attached to a level that is attached to the fuel. I think it is a vacuume system. Sorry for my ignorance. Many thanks. R.P |
#2
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Sorry, I don't recognize that stuff. Try putting diesel in a soda bottle and feeding it directly into the filter just before the lift pump and see if you get fuel when pumping.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#3
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Thanks Kerry. Will try that tomorrow. You may not recognise these parts as the car was originally a petrol so they might not be in the right places as a original 240D. If I get no luck I will post more pictures with a drawing.
Kind regards. R.P. |
#4
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That explains a lot. The original peterol car wouldn't have had a vacuum shut off. Someone probably put a solenoid switch activated by the key which sends vacuum to the shut off diaphragm on the injection pump.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#5
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That makes sense kerry. Could that mean if the solenoid was faulty it could be part of the problem. R.P.
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#6
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Yes. Pull the vacuum line off the shut off valve on the back of the injection pump just to make sure the pump can get fuel.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#7
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If you're not feeling resistance and hearing a squishing/sweaking noise when using the primer pump then your primer is dead. But a bad primer pump shouldn't keep you from starting the car, unless it's leaking fuel. Does it squish fuel out a bunch when you pump it?
I'd also suspect your shut-off system. Try what kerry suggested and see what happens.
__________________
Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#8
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Since it is a converted gasser I am not sure if the fuel system is looped or not. You may have trouble since it's pulling fuel one way only.
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#9
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Hi. Carried out instructions as suggested, still the car will not start. I filled up the secondary filter, there is fuel in the glass filter. When I hand pump I can see fuel in the line with air bubbles moving towards the inlet of the secondary filter. I think I have a looped system as I have 2 fuel pipes from the tank, one going to the glass filter and one going to the secondary filter. . Can I disconnect the fuel lines at the the injectors and quickly crank the engine to check if fuel is getting through. I also noticed a small screwed nut at the right hand side of the pump on top, can I top up fuel through there.. Many thanks R.P.
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