I am scratching my head, I hope someone has an answer.
Yesterday my Musso started acting like it had a blocked filter or fuel line. Shuddering and not accelerating, similar to what happened last year when the in-tank fuel filter became blocked.
To describe the fuel system for the car. The fuel lift pump appears to be one of those typical mechanical lift pumps they used to use everywhere on cars. The lift pump is mounted on the side of the Injector pump and "sucks" fuel from the fuel tank. After the fuel passes through the lift pump it is "pushed" through the fuel filter and then goes to the injector pump. I have installed a see thru inline filter on the "suck" side of the fuel lift pump just before the fuel goes into and thru the fuel lift pump.
I looked at the inline see thru filter and it was quite dirty so I replaced it. No help, I could see bubbles in the filter and sometimes foam. This is what a blocked filter often looks like.
I have methodically replaced or checked everything between the fuel lift pump and the fuel tank. This includes a new 3m fuel line hooked directly from the fuel tank to the new inline filter that goes directly to the fuel lift pump. I opened the top of the fuel tank where the pipes go and removed and checked the intake pipe for an obstruction or air leak I did not replace the filter last year. The pipe easily passed air blown thru and held a vacuum when I sucked on it with my finger closing one end .
I felt around the bottom of the tank and removed any "Gunk" I ran across. I pumped the tank out and replaced with new winter biodieslel/ veg oil blend. I sucked on the line from the inline filter that attaches to the fuel lift pump. Fuel flows without a lot of resistance. I replaced the main fuel filter on the Push side of the fuel lift pump.
Still lots of bubbles in the see-thru filter and car frequently shudders if I floor it or try to accelerate, but not all the time.
Any suggestions will be greatly appreciated.
Yesterday my Musso started acting like it had a blocked filter or fuel line. Shuddering and not accelerating, similar to what happened last year when the in-tank fuel filter became blocked.
To describe the fuel system for the car. The fuel lift pump appears to be one of those typical mechanical lift pumps they used to use everywhere on cars. The lift pump is mounted on the side of the Injector pump and "sucks" fuel from the fuel tank. After the fuel passes through the lift pump it is "pushed" through the fuel filter and then goes to the injector pump. I have installed a see thru inline filter on the "suck" side of the fuel lift pump just before the fuel goes into and thru the fuel lift pump.
I looked at the inline see thru filter and it was quite dirty so I replaced it. No help, I could see bubbles in the filter and sometimes foam. This is what a blocked filter often looks like.
I have methodically replaced or checked everything between the fuel lift pump and the fuel tank. This includes a new 3m fuel line hooked directly from the fuel tank to the new inline filter that goes directly to the fuel lift pump. I opened the top of the fuel tank where the pipes go and removed and checked the intake pipe for an obstruction or air leak I did not replace the filter last year. The pipe easily passed air blown thru and held a vacuum when I sucked on it with my finger closing one end .
I felt around the bottom of the tank and removed any "Gunk" I ran across. I pumped the tank out and replaced with new winter biodieslel/ veg oil blend. I sucked on the line from the inline filter that attaches to the fuel lift pump. Fuel flows without a lot of resistance. I replaced the main fuel filter on the Push side of the fuel lift pump.
Still lots of bubbles in the see-thru filter and car frequently shudders if I floor it or try to accelerate, but not all the time.
Any suggestions will be greatly appreciated.
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