Hey guys I'm doing a real statistical analysis on VP 44 failure, so the more responses I get the better. Has your VP44 failed? If so there are 4 criteria:

 

On this one I need all the help I can get. My hypothesis is that when using parts (e.g. banjo fittings and bigger injectors) with no subsequent pressure increase between the VP44 and the injector; the pump is subject to destroying itself due to a lack of fuel pressure between those two points. Thanks again for all the help.

 

my banjo's were drilled out.

 

Copenhagenjunkie,
That counts put in your vote.

 

Are you counting Max Flow Systems as "banjo's"?

 

Stock as a Rock.

VP died 3 months and 4,000 miles after I bought it brand spankin new, never even test driven before me, off the lot.

Still have the same lift pump putting out 15 idle, 10 at wot.
No codes ever thrown.


phox

 

Homestead,
Basicly I'm looking at anything between the pump and injectors that would increase the flow of fuel. But for the study I have to, for practical reasons, trim the choices down to 4. I chose the 4 I did because those seem, at least from my vantage point, to be the modifications that pop up most often between the VP44 and the injectors. Scott

 

Do you also want to know if they haven't failed? If so I am still on the original LP/VP with 35000 on the clock. Bombed from day 1 (however not at the current level).

 

The size of the delivery tubing/fittings shouldn't make any difference in flow unless you are using far greater than stock amounts of fuel. The pressure relief in the VP should remain constant no matter what size of line. If anything a larger piping system will make the lift pump last longer since it isn't having to fight as much friction loss encountered by smaller tubing. Think of the larger tubing as a reservoir, once it's filled the flow in and out is the same as smaller tubing except that it can flow more without friction loss if the engine modifications require more fuel.

Don't think the poll will help you much anyway as most folks have a stock system and thus more occasions for failure.

 

MLR1,
All I need to know is failures. But I'm in same boat you are 62K on my truck and BOMBed and never had a hiccup.

 

Keep those resposes coming fellas. The more data I can get the more conclusive the results.

 

there was a thread on here 6 mo ago?? he knew how to take these apart and back again..it is the electronic thingy rotator assy? that measures the fuel that fails.......nothing todo with the pump.........The newer the pump the less chance of a dump
For instance, my whole eng took a dump (but thats a an other story)- and I have the same pump with drilled out banjos and 275 inj........nothing wrong with pump so far....................

 

Thumper,
Do you remember the name of thread by chance?

 

well..was about 6 mo ago....mabe don m - i know it was a trust worthy dude not just shootin bull he was talkin about a swash plate assy that reg the amount of fuel and of course operated viaa elec motor of sone sort and that is tha thiny that fails acord to him.
Mabe "halin in dixie" might remember as he was having all sorts of problems about the same time with his engs.

 

Yeah hopefully ol' boy will chime in.