Results 1 to 7 of 7

Thread: New lift pump

  1. #1
    Join Date
    Dec 2009
    Location
    In the North
    Posts
    700

    Default New lift pump

    I,ve been away from home working for a couple of months, as usual the list of problems to fix when i got home was getting long.
    Our 1999 C2500 burb was running rough, low power,. Hard starts.
    So like any well trained 6.5 owner the first thing i did was swap on another one of my new pmd's... no change. Now i was convinced it was air in fuel problem. I hot wired lift pump, hose into buckets to drain out some of the 20 gals of fuel so dropping tank would be easier,.the line into the bucket was bubbling like a fish tank aerator! line cracked right at bend into the tank. So i epoxied a new pickup into the sending unit, added complete rubber 3/8 fuel line all the way to the cat filter i hung on the firewall then to th ip,. Then new rubber return line to the tank. Sat back smugly figuring i had cured my problems!
    Well almost,.....wouldn't start after 3-4 hrs with out excessive cranking till it got fuel up,.
    Turns out the lift pump was letting fuel siphon back to the pump,. And was barely making 3 psi,.
    I ordered an airtex E8153 from amazon,. Opened the box and a generic no name fuel pump in the box,. Hooked it to a battery,..dead!!!
    Bitched to amazon,. The next 2 they sent together in the same box. For a no name brand pump they are very good! Lots of suction, lots of pressure burb is very smooth now and starts easily again! Pump was 48.00 delivered.

    We'll see how long it lasts,. But i do have a spare!! 😊    Thanks amazon.
    1999 chev suburban C2500
    300,000 mi

  2. #2
    Join Date
    Dec 2009
    Location
    In the North
    Posts
    700

    Default



    1999 chev suburban C2500
    300,000 mi

  3. #3
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    12,282

    Default

    Looks great
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  4. #4
    Join Date
    Mar 2020
    Location
    Irvine
    Posts
    1

    Default

    great, but Most pumps will supply a constant flow of fuel at steady pressure to the engine. Under low demand not all the fuel can be used by the engine, so a return to the tank has to be installed. Unused fuel is sent through a small hose back to the truck’s fuel fill neck to be recirculated in the tank.

  5. #5
    Join Date
    Dec 2003
    Location
    Yukon Canada
    Posts
    1,612

    Default

    The original fuel system has a return...
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  6. #6
    Join Date
    Jan 2001
    Location
    New Hampshire - Live Free or Die
    Posts
    6,057

    Default

    Quote Originally Posted by Yukon6.2 View Post
    The original fuel system has a return...
    Yeah, and if you bypass it you're robbing the injection pump of its cooling system.
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  7. #7
    Join Date
    Dec 2009
    Location
    In the North
    Posts
    700

    Default

    Quote Originally Posted by trucknews View Post
    great, but Most pumps will supply a constant flow of fuel at steady pressure to the engine
    Thanks trucknews your first post is showing us all how much you care that we might have overlooked something thankyou and welcome to the forum.

    A little more research on your part is need tho to fully understand all the parts and pieces in the 6.5 fuel system before you add to a conversation.
    Maybe hang out for a while and see which members have daily drivers and wrench on them,.
    I've had 6.5's for quite a while now and living in the rust belt has given me some experience that other members living in the fair weather parts don't experience on a regular basis,.
    1999 chev suburban C2500
    300,000 mi

Similar Threads

  1. NOS power steering pump
    By oneton in forum TDP Classified ad forum
    Replies: 1
    Last Post: 06-12-2016, 07:34
  2. 2003 2500hd, In-tank Lift Pump????
    By harris2108 in forum Duramax 6600
    Replies: 8
    Last Post: 10-16-2009, 07:48
  3. How is Lift Pump supposed to be grounded?
    By sbachman in forum 6.5L Turbo Diesel - Tech Support - Troubleshooting - Performance
    Replies: 7
    Last Post: 06-21-2008, 06:35
  4. Please help re: lift pump and leaky line
    By BWT95K2500 in forum 6.5L Turbo Diesel - Tech Support - Troubleshooting - Performance
    Replies: 1
    Last Post: 08-02-2006, 20:31
  5. Lift Pump Powered By "Fuel Pump (FP) Relay"
    By Modified in forum Duramax 6600
    Replies: 1
    Last Post: 09-03-2003, 19:50

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •