Jump to content
  • Replies 154
  • Views 25.4k
  • Created
  • Last Reply

Top Posters In This Topic

Posted Images

what is your fuel pressure at idle and WOT multiple choice 211 members have voted

  1. 1. what is your fuel pressure at idle and WOT multiple choice

    • 10-12 idle
      10
    • 13-15 idle
      30
    • 16-18 idle
      50
    • 19-21 idle
      33
    • 22+ idle
      8
    • 10-12 WOT
      21
    • 13-15 WOT
      33
    • 16-18 WOT
      28
    • 19-21 WOT
      4
    • 22+ WOT
      2

Please sign in or register to vote in this poll.

Featured Replies

I can affirm Dripley's vote on the Glowshift deal. Cheap is good,,, and that is all I will say about that. I have the Isspro fuel pressure gauge, mechanical with no islolator, well it had the islolator but that whole isolator deal is another thing I am trying to forget about. It has made a nice paper weight on my work bench to remind me how I didn't listen to the M1973Man, Dripley and others on here.

Cheap is good. I have an ECM for a paper weight from a rebuilder. got it cheap but it sure was expensive.:spend:
  • 1 month later...

I have had my truck running for a total of about 30 min since the assassin pump install. (just been busy and haven't finished up the other things I wanted to do) but during the 30 min of running, it idled right at 15 psi, and upon giving any throttle it jumps up to 18-19 psi. It is a regulated system for 17psi, but much like all the other systems it is a spring that controls it so the 18-19psi didn't come as a shock, nor as unwanted. 18-19psi is constant all the way up through the rpm's. I will give further input once I get it out on the road and see if it acts different under load.

  • 4 weeks later...

The sad thing is, there's not an option in this poll for me! :doh: But what do you expect with a stock LP. 5 1/2 PSI at idle and I bet y'all can guess what it is at WOT? :banghead: ZERO!!!So the truck is parked in the barn, no more hauling cows or hauling feed until a new LP is on. So here's my situation - (if y'all care to read) The truck is actually the cows truck, just me and my dad drive it. And what I mean by that is that the cows have calves, we sell them, and that money puts fuel in the truck and pays for repairs. So it's a pretty dern tight income, so we need to go the cheapest route for a LP, but of course we need a very reliable LP, so that's why I'm thinking FRRP? The only thing that worries me is the reliable part of the FRRP; I've heard good and bad about it. I'm also thinking I can chip in some of my own money and shoot for an AD 150. I'm also thinking about the DTT Assassin? But I haven't read enough about it to consider it an option?I will be seeking y'all's help on this, and I will probably start a thread on the Cummins Forum to get all the opinions I can. . .Thanks

The sad thing is, there's not an option in this poll for me! :doh: But what do you expect with a stock LP. 5 1/2 PSI at idle and I bet y'all can guess what it is at WOT? :banghead: ZERO!!! So the truck is parked in the barn, no more hauling cows or hauling feed until a new LP is on. So here's my situation - (if y'all care to read) The truck is actually the cows truck, just me and my dad drive it. And what I mean by that is that the cows have calves, we sell them, and that money puts fuel in the truck and pays for repairs. So it's a pretty dern tight income, so we need to go the cheapest route for a LP, but of course we need a very reliable LP, so that's why I'm thinking FRRP? The only thing that worries me is the reliable part of the FRRP; I've heard good and bad about it. I'm also thinking I can chip in some of my own money and shoot for an AD 150. I'm also thinking about the DTT Assassin? But I haven't read enough about it to consider it an option? I will be seeking y'all's help on this, and I will probably start a thread on the Cummins Forum to get all the opinions I can. . . Thanks

My honest opinion, is that a 150 is over kill, and alot of stuff is over kill. go with either an AD or a FASS 95gph pump. don't go with the DDRP or HPFP, because they are not true kits, just replacements. the DDRP and HPRP move about 70 gallons per hour which is about double what the stock carter system moves. 95gph is more then enough. My advice is go for one of the full replacement setups either the fass 95 or the AD 95, i prefer FASS since it more or less is a bolt on DIY kit. the new FASS pumps now come with the proer nipples and you can use spin on fleetguard filters now, instead of the FASS specific ones from the past. (they were Fleetguard filters, but were hard to get. http://www.fassride.com/shop/fuel-air-separation-systems/fass-hd-series.php I have the HD series, and the 95gph one, and it supplies more fuel pressure then i will ever need. and if you are worried about psi, get some USCG approved steel renforced fuel line (1/2) and get a 1/2 draw straw and run it from your tank to your fass, then run 3/8's every where else, you will notice almost 0 psi loss since the negative side has more volume now.

The sad thing is, there's not an option in this poll for me! :doh: But what do you expect with a stock LP. 5 1/2 PSI at idle and I bet y'all can guess what it is at WOT? :banghead: ZERO!!! So the truck is parked in the barn, no more hauling cows or hauling feed until a new LP is on.

My 01 was like that.. Actually, it would prime up to 15psi.. Then I'd start it, and idling, it would slowly drop to 0psi, over the course of about 10-15 sec. It wasnt the filter in the canister. I replaced that. Then I dropped the tank, and cleaned the sock. Bingo! Been okay, for the past 1.5 yrs.

So you have a stock LP?

did you confirm that you have the intank fuel pump? If so do as he says and pull it out and clean it, swap filters and see how it goes.

I've seen them with both.From the Galaxy S3

  • 3 weeks later...

I read almost everything posted on several Diesel websites, and I have had vp44 and lift pump problems. I replaced my lift pump and vp44 about two years ago and chose the FASS DDRP-2. I use the oem fuel filter and have a AutoMeter Fuel Pressure Guage. At Idle the Fass lp produces twenty four pounds of fuel pressure. Crusing the freeway at sixty five mph the Fass lp produces a steady flow of eighteen pounds of pressure. WOT twelve to fourteen pounds fp. My 1998 Cummins 24V runs like a clock and It's totally stock. I own a small farm in Alabama and raise some nice cattle. I pull my Cattle trailer sometimes loaded and keep up with the best/newest 4x4 trucks on the roads with no exceptions. So Texas CTD-WillM Don't be afaraid of the FASS DDRP, they are affordable and the cattle can easily pay for it, just like mine did.Kerley

I appreciate the input, but I already ordered the DTT Assassin. It should be here tomorrow.Thanks anyway. :thumbup2:

I appreciate the input, but I already ordered the DTT Assassin. It should be here tomorrow. Thanks anyway. :thumbup2:

What?!? your finally getting parts for it? Is it still the farm truck or yours now?

Still the farm truck. . . I wish it was mine. :cry:

LOL One day at least ur getting the right parts for it the first time

I appreciate the input, but I already ordered the DTT Assassin. It should be here tomorrow. Thanks anyway. :thumbup2:

Let us know how you like it. I am thinking of getting a mechanical fuel pump.

Yeah, this thing should be bullet proof. I just hope I install it right. :lmao:I'm having some trouble with draw straw stuff, but I'll get it worked out. This is all a first for me. :think:

Yeah, this thing should be bullet proof. I just hope I install it right. :lmao: I'm having some trouble with draw straw stuff, but I'll get it worked out. This is all a first for me. :think:

I think I am going to use a fuel sump. Sent from my DROID3 using Tapatalk 2

I have to say the Draw straw isn't to bad working good so far for me, I might do the Sump in the future

Alright, I'll let y'all know. . . When I get it on. . . Which may be a while. . . :lmao:

I am worried about the sump leaking. Any advice.Sent from my DROID3 using Tapatalk 2