I am starting a 1.6TD build version 2, hoping for more than 40,000 miles :D

[theman53]

All of it has been down since August of 12, so it is good to go.

[ORCoaster]

What is the gizmo that is on the fender that the fuel line attaches to?  What does it do?  Vacuum gauge sender?  Prefilter, I am curious what and why. 

[vanbcguy]

What is the gizmo that is on the fender that the fuel line attaches to?  What does it do?  Vacuum gauge sender?  Prefilter, I am curious what and why.  

Lift pump!

http://www.facet-purolator.com/cube-fuel-pumps.php

I'm thinking of going for one of those too.  The IP can continue pulling fuel through them if they fail as long as you don't get one of the ones with a positive fuel shutoff.  I like the 40107 personally... 38GPH, 7-10PSI so low enough to not mess up the IP, 12" dry lift.  About $45...    Or there's the 40299, it is 12-15 PSI and rated for 50 GPH four about $65.  I've heard anything more than 15 PSI can blow out the front seal on the VE injection pumps though.

http://www.aircraftspruce.ca/catalog/eppages/facetpumps.php?clickkey=1002061

[theman53]

Yes I have the one that is 4-7 psi and they will pull through them if they fail. I have heard of bad reports from some and good reports from others of running them. I have had them on my old rabbits before I was on this board and didn't have an issue. The one on my gold rabbit did fail and it pulled just fine through it until I took it off. The dieselmakken says over 5psi it will cause too much advance all the time and melt your engine or something, Giles said that BYM and him put 40 psi to one *didn't blow the front seal either, but it was just a test* and hooked it up to his test bench and said there was no change in the results. Giles claimed since the pressure was acting on both sides it didn't make more differential so all was well. I think our pumps return and insane amount like 40GPH and the car uses some too, so if you do go that route plan for it.

It is on mine so you know where I stand, but I will not endorse or not endorse it for someone else's ride. I don't know the long term effects of what could happen if Dieselmakken is correct and wouldn't want to be the one to steer you wrong if so.

[libbydiesel]

I recently assembled a 1.6TD injection pump (taken completely to bits) that would not run after I primed the pump using an outboard primer bulb.  I then temporarily added a lift pump and it started running just fine.  I then removed the lift pump and it ran fine after that.  I believe that the vanes of the vane pump were not shooting out from the centrifugal force of the starter cranking but once it revved up the added rpms got the vane pump working fine.  The internal pressure is fine and so the vane pump is working properly now, it just needed a jump start. 

[ORCoaster]

Thanks, I feel so DOH!

Must have been a bad day in the office again.  Both Brain cells took the night off.  I thought about throwing one on the Rabbit just to make the refill on the IP easy and not have to fool around with breaking the nuts loose and such when I remove the pump all the time. 

I might have an issue as that part of the fender contains the two WVO filters and one heater along with coolant hoses for the FPHE prior to the IP.  Just a tad more crowded than a plastic box and a filter. 

[745 turbogreasel]

Cummins says

Here is the fuel pressure requirements for a 1st Generation Dodge Cummins with a VE injection pump.

Maximum Inlet restriction ............................... 4 In Hg

Maximum Return line Restriction ................ 20.4 In Hg

Maximum pressure drop across fuel filter ............ 5 PSI

Maximum pressure at the injection pump .......... 10 PSI

Minimum pressure at the injection pump ............. 3 PSI

Volume of fuel pumped in 30 seconds ........ 0.79 Quarts

But most of the truck guys seem to  think you can run  15 to 18 PSI  before you have to retain the seal with locktite or magic.

[theman53]

Dieselmakken was saying for a TDI the pressure isn't an issue but for the IDI he was saying if you went over 7 or so PSI the advance would be full on always and melt the engine down. I didn't get it so I am not the best to be explaining, but it was in TurboJ's thread of the 200hp jetta project or something along those lines. The way he was making it sound was almost like when a gasser engine has pre detonation

[libbydiesel]

The dynamic advance movement depends on the pressure differential between the pump inlet and the internal pump pressure after the regulator.  If memory serves, when Tyler was working with Giles, he did some testing at the bench using lift pumps.  He showed that the lift pump does *not* affect the dynamic advance but rather any added pressure at the pump inlet also passes over to the internal pressure so that the differential remains the same.  In other words, if you add 7psi to the pump inlet then the internal pressure also rises the same 7psi and so the differential is the same resulting in the same dynamic advance movement.  The only issue with increased inlet pressure is that the added pressure could be enough to cause a pump to leak.

[theman53]

Yes, you are correct Libby, but Dieselmakken still said otherwise. I have no test bench or enough knowledge to accurately say who is correct. I personally think as you described as I am running one, but that Dieselmakken guy I am sure has good reason for saying it does effect it.

[Alcaid]

We've seen problems running 15psi feed pump, regulated down the pressure and all was good again so there is something to it.

[theman53]

What problems? I am just wondering. Mine is not near 15 and I don't have any issues but want to know what to look for.

[CrazyAndy]

Yes, what is the GPH and pressure you are running your setup at Alcaid?  I'm looking at the Facet 40106 or Carter P60430 myself as their pressures only go around 6-7 PSI, but I wonder if 30-32 GPH is enough for my setup. 

[Alcaid]

15psi 100GPH

Problem was sudden loss of power, pump didn't behave correctly until pressure was regulated down

[Toby]

Yes I have the one that is 4-7 psi and they will pull through them if they fail.

Well that,s good since the failure rate on them is 100% over a couple of years.  Of the 2 dozen or so that I have owned or passed through my hands, every stinking one has failed. I had one replaced under warranty 6 times.