Jason1010
New member
I think I know the answer to this, but wanted to see if there is anything else I should check.
MF431, Perkins 1103, Delphi pump. Under 300 hours on tractor.
Tractor sat, under cover, for several months this summer.
Recently went to start it and it wouldn't fire off. Checked the cutoff solenoid and it was functioning properly.
Opened the fuel filter drain valve and did not notice any water coming out.
Decided to change the fuel filter. What I believe to be algae was present in the old filter.
Drained all the fuel out of the fuel tank, running it through a see-through inline filter to see if there was anything nasty in the fuel tank.
Nothing nasty observed in the see-through inline filter while draining tank.
Removed the brass fuel line fitting at tank. No screen behind fitting.
Replaced rubber line from tank to electric lift pump. Put new diesel in tank with Diesel Kleen biocide and Lucas.
Filled new Wix filter with diesel, added some biocide and Lucas.
Turned key to 'On' and ran lift pump for time MF manual states (3 minutes I believe).
Crank it and engine immediately fires and wants to go to wide open throttle. I shut it down before it goes too high.
Try a few more times and same results.
Short of pulling the pump (and possibly injectors) for service, is there anything else I could try?
MF431, Perkins 1103, Delphi pump. Under 300 hours on tractor.
Tractor sat, under cover, for several months this summer.
Recently went to start it and it wouldn't fire off. Checked the cutoff solenoid and it was functioning properly.
Opened the fuel filter drain valve and did not notice any water coming out.
Decided to change the fuel filter. What I believe to be algae was present in the old filter.
Drained all the fuel out of the fuel tank, running it through a see-through inline filter to see if there was anything nasty in the fuel tank.
Nothing nasty observed in the see-through inline filter while draining tank.
Removed the brass fuel line fitting at tank. No screen behind fitting.
Replaced rubber line from tank to electric lift pump. Put new diesel in tank with Diesel Kleen biocide and Lucas.
Filled new Wix filter with diesel, added some biocide and Lucas.
Turned key to 'On' and ran lift pump for time MF manual states (3 minutes I believe).
Crank it and engine immediately fires and wants to go to wide open throttle. I shut it down before it goes too high.
Try a few more times and same results.
Short of pulling the pump (and possibly injectors) for service, is there anything else I could try?