Me thinks someone found urine in his corn flakes this morning.
Relax. Its only a chat board. If people want to replace their lift pump let them. If not let them be also.
You like the Warbro pump. Some like the Fass. Some drive Dodges Some buy Fords. Its all good.

 

"Do the lift pumps fail on Ford diesel trucks in Canada ? No. It isn't the friggin fuel. Or the temperature for that matter."

If people using a fuel additive don't appear to have problems and people not using a fuel additive are more likely to have problems, it's the friggin fuel (don't eat the yellow snow cones :^)

From what I've run across there were at a few problems on the older lift pumps; one was too low of fuel pressure which was checked at delivery by some facilties, one was a lot of idling causing more fialures, and the other seemed to specific to some regions in Canada where high failure rates were observed. I suspect that mine is low as I seem to go thru fuel filters more than I should.

 

Have the fuel pumps in Macks, Internationals, Kenworths, Freightliners, Fords and all the other diesel engined vehicles failed as well ? No. Then obviously the Canadian fuel is good enough for those pumps to live.

Canada is cold. Fuels have different viscosities. Thick cold fuels pump harder than thin warm fuels. Hard pumping = higher pump loads = failed pumps. No decent pump would fail.

There is nothing in a lift pump that is sensitive to fuel quality. NOTHING. Lift pumps should be able to pump gasoline, which has ZERO lubrication, without any problems. The Bosch and Walbro pumps can.

All that is happening is that the stock pumps can't take the load when the fuel gets harder to pump. Additives make no difference except they might lower the viscosity and thus the pumping load.

re: your low fuel pressure. The 2nd gen guys are saying the in tank lift pumps (which they appear to be getting as well...) only deliver 10 PSI. What is going to happen to the CP3 flow when the fuel filter gets dirty and the lift pump only supplies 10 PSI ?

The failure rate on the poll is now 30 of 176 for all trucks. A little over 1 in 6.

The failure rate on the stock trucks is 22 of 90 or 24% !

The failure rate on modded trucks is 8 of 56 or 14%.

Why the difference ? Because the modded engines are using more fuel thus the lift pump is pumping at a lower pressure, which is a lower load and thus living longer.

The modded trucks are probably running higher injection pressures most of the time. When that happens the internal feed pressure in the CP3 is higher and the thus the flow cooling/lubricating flow rate inside the CP3 is higher as well. It is controlled via the orifice in the cascade over flow valve. More flow = lower pressure = longer pump life.

Tell that to your dealer if you are ever denied a lift pump because your truck is modded.

 

I don't think the poll on this board means squat. It's not representative of the real world in any way. Most of the thousands on this board saw the poll and didn't respond that their pump is fine (me included). It's no fun to post that all is well, but it is to ***** about it!

Andy

 

Superduty thanks for posting your thoughts about the Cummins engine.

I'm really impressed with your knowledge and abilities.

 

I ran across this on bitog:

"My cousin's 5.9L went through about 4-5 lift pumps before Dodge quit replacing them. We discovered that the fix was simple: buy a genuine Cummins lift pump--from Cummins, not Dodge--and replace it yourself. Cummins dot com will put you in touch with a local Cummins distro. It was less than $100 delivered by UPS. It took 5 mins to replace and has been going strong ever since."

 

3 of the 4 I replaced on my 99 were from Cummins.

 

Superduty, I sent you a PM.

 

I hate to burst anyones bubble, but Superduty is right. Having grown up most of my life around hi-perf drag cars, I know intimately about fuel requirements of engines. The problem he is talking about is the exact same one that developed unknowingly with the new for '99 Ford Mustang. The performance aftermarket could not get more than 450hp out of these cars do to the direct, low flow/high pressure/no return fuel systems. The problem arrised when the fuel requirements stripped the lift pump dry at those levels. It was impossible to ramp up the flow, cause the pressures would go through the roof. The only solution was to retrofit a return line with a high volume/lower pressure fuel pump as seen in the '95-'98 Mustangs. With this setup, the power potential was unlimited, cause the engine would only use as much as it needed. And the pressures never got dangerous. These problems were long and drawn out on the Mustang forums, so it would be impossible to go through them all on here, but if anyone does the research they will see what I'm talking about.