david85
Full Access Member
Did you try a power balance test?
You can slightly loosen each injector feed while the engine is running line to temporarily de-activate each cylinder in turn. A bad injector that is knocking can be taken out of the equation that way. I know it's not very likely that running the tank dry will cause immediate damage to the injectors or the injector pump, but old components that weren't in perfect condition to begin with could get pushed over the edge, so to speak.
CAUTION: keep fingers well away from the high pressure connections when you do this. Fuel pressure is high enough to cause "hydraulic injection injury" which results in poisoning of living tissue beneath the skin at the point of injection (invasive surgery is the only treatment). Its not very likely to happen in this case, but wanted to put that warning out there for anyone else that comes across this thread.
One thing I don't see here is a description of how the pump failed. Did it rupture and fill the crank case with fuel? Or did it simply stop working? Did you do any kind of inspection of the old pump to find any clues?
You can slightly loosen each injector feed while the engine is running line to temporarily de-activate each cylinder in turn. A bad injector that is knocking can be taken out of the equation that way. I know it's not very likely that running the tank dry will cause immediate damage to the injectors or the injector pump, but old components that weren't in perfect condition to begin with could get pushed over the edge, so to speak.
CAUTION: keep fingers well away from the high pressure connections when you do this. Fuel pressure is high enough to cause "hydraulic injection injury" which results in poisoning of living tissue beneath the skin at the point of injection (invasive surgery is the only treatment). Its not very likely to happen in this case, but wanted to put that warning out there for anyone else that comes across this thread.
One thing I don't see here is a description of how the pump failed. Did it rupture and fill the crank case with fuel? Or did it simply stop working? Did you do any kind of inspection of the old pump to find any clues?