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-   -   6.9 no power (https://www.dieselbombers.com/ford-83-94-6-9-7-3l-general/123671-6-9-no-power.html)

Jimmi Neutron 10-07-2014 02:55 PM
6.9 no power
 
Hello, kindsmen! Im brand new on this forum so please be gentle... I`ve got a 87 6.9 IDI in my truck. It ran all so great a while ago but driving it home last weekend it started loosing power an after a few miles it started doggin it. Top speed: 15 mph!:td: Got home and ripped out the filter, a li`ll dirt and water. Put new one in, checked for fuel at injectors: ok. Truck still doggin! :scare2: My IP gone bad? The feeder pump lost it? Anybody suffered the same experience? What to do?

4x4manonbroke 10-08-2014 05:16 PM
Sounds like bad Lift pump ... :humm:

Dortiz 10-09-2014 12:43 AM
I would throw an electric inline fuel pump on, helps a lot and I never had to bleed my injectors after that

4x4manonbroke 10-09-2014 02:30 PM
YES .. I agree .. I was shocked at the power difference and mine was running good before I swapped mine out . :yeah:

Jimmi Neutron 10-10-2014 03:00 PM
Aright!
 
Ok guys! I fired my truck up and it runs great on idle. Fuel pressure at filter: 3.5 psi at idle. The flow; I dont now... Gonna rip the lift side on the fuel supply apart tomorrow to check for clogging. The pressure on the lift side doesent really tell you much since it´s the flow your really depending on, I guess. I`m afraid I killed the injector pump driving the truck home with the noticeable power loss. Guess I need to put an electrical pump in and try from there...:humm: Anybody got a functional IP for sale? :w2:

4x4manonbroke 10-13-2014 07:26 PM
fuel pressure needs to be 8 PIS minimum .... Your pump isnt pushing hard enough ..

Yes I have a good Ip for $200 for sale .. 40K on it was new .. :tu:

CO TOM 10-14-2014 08:57 PM
Originally Posted by 4x4manonbroke (Post 1076518)
fuel pressure needs to be 8 PIS minimum .... Your pump isnt pushing hard enough ..

Yes I have a good Ip for $200 for sale .. 40K on it was new .. :tu:
$200 for an IP used with 40K is a steal but you do not have to take anyones word on it look on Car-Parts.com and you will see it is a good deal! a rebuilt will run over $500 If you do change it out DO NOT remove the drive gear you will have a headache getting it lined back up! :argh:! Not that I would ever do something like that!:tttt:

4x4manonbroke 10-15-2014 11:58 AM
YEAH .. LOL.. me either .. lol :argh:

Jimmi Neutron 10-16-2014 12:57 PM
I put an electric pump on and the truck fired up like never before! Nice flow on lift side, don´no pressure since my p.o.s pressure gauge bailed on me. Put it in drive and went for a biddy drive... She ran even worse:argh: No power. And I´m serious: NO power. Tow truck back to shop... Checked the return line from IP and it was hardly any diesel in it. Anyone got a drawing on the IP? I´d like to check inside for clogging... And yes,4x4manonbroke, I´m interrested in buying your pump!!! Thats seems like a fair bargain!:yeah:

4x4manonbroke 10-18-2014 03:18 AM
Originally Posted by Jimmi Neutron (Post 1076831)
I put an electric pump on and the truck fired up like never before! Nice flow on lift side, don´no pressure since my p.o.s pressure gauge bailed on me. Put it in drive and went for a biddy drive... She ran even worse:argh: No power. And I´m serious: NO power. Tow truck back to shop... Checked the return line from IP and it was hardly any diesel in it. Anyone got a drawing on the IP? I´d like to check inside for clogging... And yes,4x4manonbroke, I´m interrested in buying your pump!!! Thats seems like a fair bargain!:yeah:
Send me a PM ..


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