Chrispndry
Member
Its starts but runs erratically it's only getting fuel that the injection pump is pulling the itp and the auxiliary pump that was fitted gets power then stops...the garage bridged the pump relay we could hear it run he disconnected the pipe to the filter but nothing came through even when cranking...reconnected it cranked fired up but loads of air...continues to have air in clear pipe...always fires up rund 3..4..miles 30..40 mph then struggle..
Chrispndry
Member
No not fitted exchanger...changed main filter first as I thought it was blocking up...the fitted new itp...the tried auxiliary pump...relay kick pump inn but then they stop....running 50/50....was on 100% for 4 weeks till it started losing power hence filter change
Datatek
Well-Known Member
100% veg oil can lead to glycerine separating out and blocking things
Datatek
Well-Known Member
Worth a try, it will not damage the pump but if it's the version fitted with a non return valve it could damage that if too much pressure is applied.
Last edited:
I'd check the intank pump is connected properly.. Then flush the tank and just try some diesel before going back onto veg oil.
Chrispndry
Member
But new pump...new auxiliary pump...new fuel line new filter...no fuel....got to be a cut off switch somewhere gonna try with direct fused live to pump tomorrow....maybe try to pull fuel.to injection pump get rid of air...it ran great until filter change.
Unless the filter seal is deformed?
Datatek
Well-Known Member
Why the auxiliary pump? If you can hear the pump run, what is the point of running a separate feed?
Might be bacterial growth blocking the fuel pipe. Loss of sync to EMS would stop pump too.
Datatek
Well-Known Member
But he say's the pump runs
Datatek
Well-Known Member
There is conflicting information. The engine runs, so the FIP can suck fuel through.
The pump runs but produces no fuel at the filter.
To my mind that indicates a duff pump or as Flossie say's the auxiliary pump is causing a problem.
I'd get rid of the auxiliary pump, it's not needed and is one less thing to worry about. If still no fuel, time to drop the tank and check the lift pipe from the pump is n not broken.
The pump runs but produces no fuel at the filter.
To my mind that indicates a duff pump or as Flossie say's the auxiliary pump is causing a problem.
I'd get rid of the auxiliary pump, it's not needed and is one less thing to worry about. If still no fuel, time to drop the tank and check the lift pipe from the pump is n not broken.
But he say's the pump runs
I'm unsure if loss of sync stops the lift pump? It still cranks and the glows still work after all.
Datatek
Well-Known Member
It also runs, just not well.
Chrispndry
Member
Update...took itp off now has inline pump only linked to wiring from relay etc. Pick up pipe to about 1 inch from.tank bottom..fuel now to filter but still loads of air runs gets up to 50mph dies struggles then increases now running 80% diesel 20% veg...
Datatek
Well-Known Member
Just a bare pipe end with no pick up chamber? How full is the tank??
