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Found 11 results

  1. Okay I've got something going on with my truck and I'm in need of ideas. My truck sounds different (more tinney rattle) in the top end, less power, less boost higher EGT's. I pulled the valve cover off and re-torqued everything. I was worried something vibrated loose. Everything was tight. I did start the truck while the valve cover was off, and I could hear what was I think was the injectors. Not sure what they are suppose to sound like? I haven't changed a thing with any settings in the Quad tuning. I'm running the edge tune, (I can post them if anyone wants to look them over). Only thing that I found was the set screw on the boost elbow backed out and was gone. I replaced it (screwed all the in) built a "boost tester" pressurized the system, zero boost leaks. I'll add the data logs, the one in green is from January, red one is from yesterday. Today I adjusted the valves ( they were a little loose), while running the truck after the valve lash adjustment I noticed the fuel pressure was running between 12-13 psi at idle. I put a mechanical gauge on it and I've got a crazy surging going on. It will stay at 12ish - psi for a second or two, then surge up to 22ish, then drop back to 12ish again(I'll try and add a short video). I did the bucket test on the fass 150 everything is flowing great no surge, Next, I put everything back except pulled the fuel line off the vp44 and ran it into the fuel tank via main fill hose (used the key bump flowed great). Last, I powered the pump with a constant power source independent of the trucks electrical system flowed great no surge. What I need ideals with is I think I have possible two problems aggravating each other. First is the loss of power, boost with higher EGT. I'm not sure on this one bc I haven't changed anything with the power out put in my tune. Just showed up along with the change in engine sound... Re-recap: boost test= no leaks, replaced the boost elbow set screw(I found it missing), adjusted valves, no blow by, waste gate functioning normal with compressed air test. Second is the fuel surging issue... It only seems to surge when the fuel lines are hooked up to the vp44. I'm wondering if there is a fuel return regulator or valve that's malfunctioning ? Re-cap: Fass 150 bucket test= no surge, in-tank pick up used to feed the fass 150 and pressure line flowing into tank fill = no surge, out side power source = no surge, all the lines back in the places they came from(pick-up, pressure, return) truck running with out side power source= surge, same as test before truck power source= surge Video file is to big, it won't let me upload it. I can email it to anyone that wants to take a look. Thanks guys any input or ideas will help!!
  2. notlimah

    Lift pump pressure adjustment

    With today's electronic lift pumps from FASS and Airdog, TYPICALLY they do not come with a way to easily adjust fuel pressure. There are options out there but they are quite spendy and there's easier ways to accomplish the same thing. So for those who have pumps that do not have an external/adjustable regulator, your pump more than likely uses a spring and ball to regulate fuel pressure. Springs should be provided from the pump manufacturer to provide adequate pressures. Typically between 16-18psi. The pumps use a hard plastic ball, either a Buna or Viton ball. This will create a seal when the pump is off and keep fuel from "leaking" or "moving" in the lines once the pump is off. The springs can be inconsistent which can cause erratic fuel pressure readings or lower then expected readings. Using this diagram of a FASS system, if you remove the hose/fitting that is connected to the "air/vapor return to the tank" you will find a spring a ball, it will look like this. If your spring comes out looking like this... You were more then likely experiencing erratic fuel pressures. You could either straighten out the spring and reinstall or replace the spring all together. I only have experience with FASS but I called FASS support and they sent me a replacement. I imagine the same would happen with Airdog. The next factor in all this are the balls. In my research I've found that FASS uses a Buna ball and Airdog uses a Viton ball. I was having a mixed bag of issues, erratic fuel pressures and also lower then expected fuel pressures. Upon removing the spring and ball I found my spring had twisted (previous pic) and that the ball had indented into the spring. You can see the indentation here. I tried a couple replacement balls from FASS with the same results. I then went with a Viton ball and the problems haven't returned. The Viton ball is stronger material and seems to be holding up well. If you're still having lower pressure issues then you can put a washer in to shim the spring and raise pressure. The following measurements should get you in the ball park but make sure you double check you're not adding any additional restriction by using to small of an ID. Here are the measurements: OD - .631" ID - .320" thickness - .039" ***This washer/shim should be added between the fitting and the spring NOT between the spring and ball.*** So what helped fixed my issues was going with a Viton ball and a 17lb spring. This isn't meant to say one company is better then the other, just what I found out in my research and what fixed my problem. The point of this article is to help educate others on potential fixes. ***Additional notes*** List of parts I used Viton Ball HERE 17lb spring HERE I understand these are labeled as Airdog parts but they worked fine in my FASS 150. The Airdog fitting DID NOT work on my FASS pump so if you're looking to replace that on your FASS 150 you would need to contact FASS to get a replacement. Here's the difference FASS LEFT AIRDOG RIGHT Pretty noticeable difference in threads and overall length so if replacing these fittings they must be brand specific.
  3. 5-15% off BLACK FRIDAY/CYBER MONDAY and Beyond SALE-- Now- DEC 8th http://www.dieselautopower.com/v/BlackFriday.html
  4. Well tax return time is coming around the bend so Im going to get a new lift pump. So I was thinking its between the Raptor or the Air dog. I priced the raptor at 350 and airdog around 600. It it worth the extra coin for the airdog? My plans are Little bit bigger injectors 75 max and be able to turn up the smary. Thanks guys.
  5. Hey guys this summer I was very proud of myself and found a 2 micron fass 150 fuel filter from my NAPA store! Little did I know it was the wrong filter I put the 2 micron for the water separator! Well in the last few days here in Minnesota it has been dropping into the low 20's and when I have been starting my truck in the morning it would run for a minute and blow the 30 amp fuse that runs the pump:shrug: So what I finally found out after calling Fass a couple of times is that my filter was drawing fuel to hard through that fine of filter, so I spun on a 14 micron Napa #3405 and hopefully all my problems are gone!
  6. FASS 150, AirDog drawstraw, Cat filter & head.
  7. Quick question - for those who followed my mini-saga of my truck not starting this weekend. My common sense tells me it was the extreme cold here in Flagstaff that caused my truck to die on the road requiring a full system bleed to get her going again. But, I keep reading about the 1/4 tank issue and want to rule out the possibility that it died from fuel starvation. When the truck died on Friday morning, it had just over a 1/4 tank according to gauge, and my SGII told me I still had 109 miles left before empty (the SGII has been very accurate, and I have had problems with fuel level gauge past couple weeks). My question is what exactly is the 1/4 tank issue, and in spite of the cold temps, is it possible that the truck 'suffered' from starvation and not the extreme cold (0 F)? I'm glad I got her running again, but I could never really ascertain if my fuel was gelled or not, as by the time I got her in my garage, and got the filter off and drained, it didn't appear gelled. I did replace the filter as it looked a little strange, but I'm not entirely convinced it was the cold. Last night I filled her up and it took 15 gallons (added to the 10 I put in during my ordeal) that would leave 9 gallons left in it when it died Friday. Is 9 gallons of fuel sufficient to cause the 1/4 tank issue?Thanks again for all the support during my weekend, and I'm glad to have her back on the road. I was about ready to give up on the VP yesterday morning when I tightened the injectors back up, cranked one more time and she coughed - sputtered - and came back to life for me. The greatest sound in the world, and no new VP for now - but looking at the AirDog in the near future after over a year of putting it off.By the way, the lift is putting out a nice 14-15 psi normal operation, maybe swinging down to 11-12 during heavier applications, and idling at 15.
  8. Hi Guys,Thinking of purchasing one of these. I like the adjustability of it & the fact that I'm using bioblends or adding filtered WVO in warm weather only. Above 10% my low pressure light comes on till I add more diesel to thin it out! Been seeing it around for about $365. And since Michael thinks the Fass Dodge Direct Replacement is junk.Any thoughts? Thanks,Dave
  9. Last night i install a fuel psi sending unit in my vp44 at the check valve, i remove it from the vp and installed a banjo bolt then the psi snubber, then the sending unit. When i went to start it, i bleed air at sending unit to get it to start, then back up parked until the morning to finish the inside stuff then. Once i was finish it would not start. bleed again, but did'nt get any fuel. remove banjo at back of filter and i did the crank-no-start thing for the pump to start and it was but nothing coming out of the banjo at all. Was on a slope driveway and I had 1/4 tank of fuel, went and got 5 more gallons, still nothing. I then went and fired up the air compressor to put some psi into the tank, then i got fuel all the way to the vp44 when everything was put back together. The thing is, it was running find until i started to put in the gauge. I was in battle with myself the the wife on which one first, Gauges or the lift pump, now i think i have to tell both , not in the budget. Am i missing something:cookoo:?
  10. haha.....so i went to change the fuel filter yesterday, took it out, changed the filter, drained the can(first time i've ever done that), put the filter in, and did the starter bump thing...the truck ran for 30 seconds, then died, so i bumped the starter a few times so the pump could cycle....after about 6 times of that, i opened the can to see if it actually was working....and of course it wasn't........ so long story short, i went to o'reilly's, got the Air Tex stock replacement and am waitin on reinforcements to show up to help me R&I..... now for the point of why i think so many of y'all gave up on CF...here's my thread over there http://www.cumminsforum.com/forum/98-5-02-powertrain/236254-f-m-l.html it's guys like black01 that makes folks leave........
  11. Anybody Running A Fass 95 If So What Kind Of Oressure At Idle And At WotI Installed Mine Yesterday And It Idles At 15.5-16.5 And Wot Drops To 7 Or 8 At Wot With Box On 2x5 I Thought It Should Do Better Than That My Ddrp Done That Good KERRY
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