Is it possible to blow compressed air back through the lines and then pump out the tank?
The 1/4 tank bit makes me think it is time to remove the in tank fuel strainer , this is a really filthy , oily job that requires ramps and a 46 MM socket with 1/2" drive flex handle , wobble 12" extension or a 1/2" drive knuckle .
Once you've taken the Diesel bath and removed the screen , it is easily cleaned in a Hospital Clean container of fresh gasoline and an old tooth brush plus 5 # or so of _LINT_FREE_ clean rags or blue wiper towels .
It really sounds like it's drawing in air ~ and when the slimy crud collects around the in tank fuel screen , it forces the screen to begin drawing air from the top part of it when there's not much fuel in the tank ~ the 1/4 tank problems and stalling indicates this to me .
It matters not who you have paid to clean the in tank screen , I always find this is clogged until the owner removes and cleans it properly .
Have you tried holding both ends of each and every hose connection under the hood and twisting them ? if they're able to twist , you have an air leak , replace the hose with the correct IMPORTED 7MM DIESEL RATED fuel hose (! NOT the stuff NAPA etc. sell !) and a full set of matching band typ hose clamps ~ those " ideal " (brand) screw typ clamps CANNOT POSSIBLY work 100 % ~ I know many here have them and all my cars did when I bought them but all have the correct $3 each German band typ clamps now and no air leaks in the fuel....
I understand you've tried all this but in the end , once you have eliminted everything else , whatever remains , no matter how unlikely , is always the root problem .
I run horribly high mileage and previously abused Mercedes Diesels (three of them) but I'm *very* picky about the details and I never have these problems in spite of always having dirty fuel troubles no matter where I buy my Diesel fuel .
Last Q. : how long ago did you last replace the secondary , screw on fuel filter ? .
-Nate
Mike wrote:
On Tuesday, February 18, 2014 7:01 AM, "vwnate1@yahoo.com" <vwnate1@yahoo.com> wrote:
The 1/4 tank bit makes me think it is time to remove the in tank fuel strainer , this is a really filthy , oily job that requires ramps and a 46 MM socket with 1/2" drive flex handle , wobble 12" extension or a 1/2" drive knuckle .
Once you've taken the Diesel bath and removed the screen , it is easily cleaned in a Hospital Clean container of fresh gasoline and an old tooth brush plus 5 # or so of _LINT_FREE_ clean rags or blue wiper towels .
It really sounds like it's drawing in air ~ and when the slimy crud collects around the in tank fuel screen , it forces the screen to begin drawing air from the top part of it when there's not much fuel in the tank ~ the 1/4 tank problems and stalling indicates this to me .
It matters not who you have paid to clean the in tank screen , I always find this is clogged until the owner removes and cleans it properly .
Have you tried holding both ends of each and every hose connection under the hood and twisting them ? if they're able to twist , you have an air leak , replace the hose with the correct IMPORTED 7MM DIESEL RATED fuel hose (! NOT the stuff NAPA etc. sell !) and a full set of matching band typ hose clamps ~ those " ideal " (brand) screw typ clamps CANNOT POSSIBLY work 100 % ~ I know many here have them and all my cars did when I bought them but all have the correct $3 each German band typ clamps now and no air leaks in the fuel....
I understand you've tried all this but in the end , once you have eliminted everything else , whatever remains , no matter how unlikely , is always the root problem .
I run horribly high mileage and previously abused Mercedes Diesels (three of them) but I'm *very* picky about the details and I never have these problems in spite of always having dirty fuel troubles no matter where I buy my Diesel fuel .
Last Q. : how long ago did you last replace the secondary , screw on fuel filter ? .
-Nate
Mike wrote:
This is the third time I have been towed because the vehicle stops running. Some facts are:
1. Vehicle has 1/4 tank or less.
2. Temp is 25 degrees outside.
3. Diesel Kleen (white bottle) added
4. When operating the hand pumpfule comes out of the hand pump but none out of the bleeder screw on the fuel filter canister.
In the past I looked and the fuel lines were open to the fuel filter.
Any help is so appreciated. This is really strange.
Mike
1. Vehicle has 1/4 tank or less.
2. Temp is 25 degrees outside.
3. Diesel Kleen (white bottle) added
4. When operating the hand pumpfule comes out of the hand pump but none out of the bleeder screw on the fuel filter canister.
In the past I looked and the fuel lines were open to the fuel filter.
Any help is so appreciated. This is really strange.
Mike
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