All,
Preamble: I normally run WMO in my 7.3 IDI, but not in the cold weather, and I have not started using it this year yet. I do not like the idea of using an electric lift pump; I prefer all mechanical. I am not doing any performance stuff, just stock. My truck has about 130k on it, odometer has not rolled over more than the one time.
I had thought that my lift pump was getting weak so I replaced it with a new one. In about 3 months the new pump was bad. I took it off and put my finger over the inlet side and pumped the lever and there was no suction. I had another brand new one that a friend had given me, so I did my little finger test on that and no suction there either. I still had the "weak" pump, so I did my finger test on that one and there was significant suction. So I put that pump back on and have been using it ever since. It would be about 6 months ago that I put the old pump on. I have been using mostly regular pump diesel during that time. Truck has a new fuel filter, also mostly pump diesel run trough it.
The other day I saw the filter light come on when pulled hard at an on-ramp. Since the filter is new and it was not anywhere near cold enough for jelling (30F or so, and with additive) I am starting to suspect the lift pump again. It is likely the original pump from the factory.
The issue is that after seeing two brand new lift pumps in a row that were apparently just trash, I am not excited about buying another one from the autoparts store. And while i did spot one for $75 instead of the usual $30, I had no assurance that it was any better.
So, finally after all that, here are my questions: Do any of you know of a high quality mechanical lift pump I can get? Is there a high volume low pressure piston pump available out there like there is for the Cummins 12 valve?
Preamble: I normally run WMO in my 7.3 IDI, but not in the cold weather, and I have not started using it this year yet. I do not like the idea of using an electric lift pump; I prefer all mechanical. I am not doing any performance stuff, just stock. My truck has about 130k on it, odometer has not rolled over more than the one time.
I had thought that my lift pump was getting weak so I replaced it with a new one. In about 3 months the new pump was bad. I took it off and put my finger over the inlet side and pumped the lever and there was no suction. I had another brand new one that a friend had given me, so I did my little finger test on that and no suction there either. I still had the "weak" pump, so I did my finger test on that one and there was significant suction. So I put that pump back on and have been using it ever since. It would be about 6 months ago that I put the old pump on. I have been using mostly regular pump diesel during that time. Truck has a new fuel filter, also mostly pump diesel run trough it.
The other day I saw the filter light come on when pulled hard at an on-ramp. Since the filter is new and it was not anywhere near cold enough for jelling (30F or so, and with additive) I am starting to suspect the lift pump again. It is likely the original pump from the factory.
The issue is that after seeing two brand new lift pumps in a row that were apparently just trash, I am not excited about buying another one from the autoparts store. And while i did spot one for $75 instead of the usual $30, I had no assurance that it was any better.
So, finally after all that, here are my questions: Do any of you know of a high quality mechanical lift pump I can get? Is there a high volume low pressure piston pump available out there like there is for the Cummins 12 valve?