firehawk618
Veteran Member
Friend of mine works at a shop and they replaced the injection pump on a 03' ALH with a rebuilt unit from a local rebuilder.
They primed it up and the car started right up.
Steady stream of bubbles in the feed line.
When you shut off the car a long stream of air comes back out of the injector pump and the feed line is left with all air in the clear part.
When you try to re-start the car after it's sat a few minutes it has to crank 5+ seconds to re-prime and start.
To troubleshoot they put a feed line directly into a can of diesel and routed the return line into another can.
No air entering the pump when doing this and still when you shut the car off air flows back out of the pump.
Any suggestions? I'm thinking faulty pump.
When I was there I checked to make sure all 4 injector feed lines were tight and visually not leaking any diesel.
Thank you.
They primed it up and the car started right up.
Steady stream of bubbles in the feed line.
When you shut off the car a long stream of air comes back out of the injector pump and the feed line is left with all air in the clear part.
When you try to re-start the car after it's sat a few minutes it has to crank 5+ seconds to re-prime and start.
To troubleshoot they put a feed line directly into a can of diesel and routed the return line into another can.
No air entering the pump when doing this and still when you shut the car off air flows back out of the pump.
Any suggestions? I'm thinking faulty pump.
When I was there I checked to make sure all 4 injector feed lines were tight and visually not leaking any diesel.
Thank you.