Need Advice-Fuel Prob 81 Mercedes Benz 240d - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 05-20-2011, 04:48 PM Thread Starter
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Cool Need Advice-Fuel Prob 81 Mercedes Benz 240d

Hello to all, I'm a brand new member and a bit of a noob when it comes to some more advanced mechanical issues so please bear with me.

Here is the basic deal, I bought a sweet 1981 240d from a friend about 6 months ago with only 140k miles on it. He had previously installed a veggie oil kit which is still on it now but not being used at all. Car has essentially been awesome except for about 3 months ago when the fuel issue reared its head. A slow progressive loss of fuel to the filters and the car eventually stalls an cannot be cranked. The first time around i changed the secondary large filter and filled the main tank and the problem disappeared. This time around Ive changed both the fuel filters in the engine but have killed two battery charges without being able to crank it.

I tried priming with the hand pump but got very little if any resistance and when opening the bleed valve had no air pressure at all. The clear filter has no fuel in it at this point or any other since problem began. I checked the voltage on the fuel pump and says its good which from what i hear these pumps very seldom go out.

So, I would have to assume at this point that Ive got a clog somewhere, in the tank, a hose, something along those lines? Ive got a guy coming to help me tomorrow who has some experience with diesels and the plan is to remove the fuel tank and check the strainer, filters and what not. Im aware that these cars are well known for having this issue but any advice that you guys can offer or alternative things to look for would be highly appreciated. I'll prolly be spending some time here in the forums in the coming months to try and get this baby running as tight as possible.

Ive seen in other posts multiple tools that might be used to remove the tank and/or strainer/screen. Any assist on helping me narrow that down a little would also be of great use since i have no tools and will have to purchase everything i need. This is not only a sweet car when its up and running but its my main mode of transport so any pointers or advice you guys can offer to help me get back on the road will be appreciated. Thanks
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post #2 of 2 (permalink) Old 05-20-2011, 09:20 PM
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Tank strainer.
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