Lift Pump
Lift Pump
The lift pump in my 2001 cummins went out last fall. Took it to the local dealer and they said I could either god with the new factory set up or a replacement Allied Power pump. I went with the Allied pump, but I just have a feeling that this one is going to go out too. Any ideas on what to do if it goes out again? What did any of you guys do?
BOMBARDIER
Joined: Mar 2007
Posts: 23,293
Likes: 1,322
From: North of You
You did the right thing given those 2 options. The only dealer fix is the in tank pump and its junk.
Airdog or Fass are some of the best options.
You need to get a fuel pressure guage installed.
Airdog or Fass are some of the best options.
You need to get a fuel pressure guage installed.
Diesel Fan
Joined: Jan 2010
Posts: 34
Likes: 2
My third stock lift pump went dead while I was pulling a trailer through eastern Montana. All the nearest parts store had was a Holly Red and a Holly Blue. Bought both, and in the parking lot of the motel, fabbed some mounts and installed the Red at the tank, and the Blue in the engine compartment, with a regulator just before the gauge splice. Thought I'd change out that fix whenever some better solution came along.
Later, I thought I'd get an Airdog or a Fass when the Holly pumps failed....
So here I am, six years later, over a hundred thousand miles, still waiting for those Holly pumps to fail. Still getting 20 psi at idle, and 16 psi at WOT....
Later, I thought I'd get an Airdog or a Fass when the Holly pumps failed....
So here I am, six years later, over a hundred thousand miles, still waiting for those Holly pumps to fail. Still getting 20 psi at idle, and 16 psi at WOT....
Diesel Fan
Joined: Jan 2010
Posts: 34
Likes: 2
Ya, I know - to be honest, though, I cheated. At the time I installed them, everyone was experimenting with Holly Blacks - and the problem was that fuel would eat through the shaft o-ring and contaminate the motor. So I replaced the o-rings with similar ones from some injection pump, don't remember what, and voila!
But the Fass came out that summer, and everybody went nuts for it, so I never bothered to tell anyone....
But the Fass came out that summer, and everybody went nuts for it, so I never bothered to tell anyone....
Diesel Fan
Joined: Jan 2010
Posts: 34
Likes: 2
Wish I could tell you. It was an on-the-road fix in Miles City, Montana. I took the Holly o-rings down to an IH truck shop in that town and told them I needed to match them up to a set that could handle diesel fuel. They found a pair in a rebuild kit for an injection pump. Apparently a good pair.
BOMBARDIER
Joined: Mar 2007
Posts: 23,293
Likes: 1,322
From: North of You
Look what I found - heres the o-rings that are chemically compatable with diesel:
eFunda: O-Ring Materials Compatibile with Chemical Diesel Oil
Looks like Buna-n is the best choice.
eFunda: O-Ring Materials Compatibile with Chemical Diesel Oil
Looks like Buna-n is the best choice.
