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You are right 100% I see the filter and its under the mistery screw as my son called it yesterday. I cant wait to get home and find out. Dear Sir I will keep you posted and THANKS!!

WOW you are right!!! I saw this BIG screw but I had the truck at my home and I dont have my complete set of tools there. Im at my shop now and its getting close to time to head home so I will bring a big screw driver and try this. I HOPE there is a filter and its frigging pluged!!! This would...

I have the cummins 250 motor. On top of the pump is a fuel cut off both electric and manual. I have checked to see if this is working and it is.

Hey Stein... I have the cut off valve on top of my pump. There is no filter there.

I tried both tanks with the same results. Im going to check one more time before I take the pump to a expert for the cost here in Italy is out of this world! Do you know of a "in pump filter or screen"?

Hi Jeff, I did this same thing on sunday and heard no leaking air. Im going to check the gasket on the fuel fiter but Im sure I installed it right and besides it had the same problem before I changed the fuel filter. I did remove the pump to the injection pump yesterday and spinning it by had...

I made a air valve on the fuel tank and pumped it up and checked for leaks but found nothing. PLus when its first running as in cold, either is still needed to start it but it runs better.,

Fuel Starvation Thanks for the replies.. The motor is a 250 Cummins. Tanks and clean, no cracked lines, Fuel tank vaule is free and working (note old filter and all lines and tank and shiney clean, no rust, nothing).

I wish I had something good to write about my M931. Still haing problems with fuel starvation!! List of things checked:: - Tanks are clean. - Lines are free. - New filter (old filter was clean) - Shut off elec. valve checked and working. - Primer pump was sucking air but a by pass was made and...

I changed the filter on sunday and it made no difference. I even went so far as to remove the filter and it made zero difference....

I have a M931 with the same problem plus a few things more! Hard to start (only on either), Surges RPM up and down. Tanks are clean, filter is clean, lines are free. Do you know of a in pump filter?

My 931 is giving signs of fuel stravation. Filter is good, tanks and clean, fuel lines are free. Shut off valve is checked and working. Please let it not be the pump! HELP from Italia.