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Question
1989 f 350 7.3 80k miles.....no power grey smoke put new injectors,filters,injector pump,lines to pump.......still smokes and no power
Submitted: 24 days and 19 hours ago.
Category: Ford
Value: $15
Status: CLOSED
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Optional Information
Year : 1989
Make : Ford
Engine: 7.3
Posted by
Dieseljunky2
24 days and 19 hours ago.
Info Request
Have you checked for air in the fuel low side of the system?
24 days and 19 hours ago.
Reply
what do you mean low side
Posted by
Dieseljunky2
24 days and 19 hours ago.
Info Request
Every thing from the fuel cap to where the line comes out the fuel filter to go to the injection pump is the low side of the fuel system.
24 days and 19 hours ago.
Reply
we checked from the fuel cap , all the lines to the motor....no signs of a leak
we also hooked up 2 gallon container to fuel pump near engine....no change...
Posted by
Dieseljunky2
24 days and 19 hours ago.
Info Request
You will need to get a length of clear plastic hose from the hardware store, the same size as the line from the fuel lift pump to the fuel filter. replace the line between the lift pump and fuel filter with the clear line, you should have enough extra length to make a loop about 6 inches in diameter in the hose (makes it easier to see the bubbles). start the truck and run for 2 or 3 minutes. are there any bubbles flowing through the hose? If there are, and you stated that you already eliminated the truck lines by running from a container, then the lift pump is aerating the fuel and needs to be replaced. I know this is time consuming, but it is the only way to properly diagnose the issue at hand. Let me know the results.
24 days and 19 hours ago.
Reply
ok...its to late tonight to get the new pump or clear hose....we will try that
actually the truck started to loose power months ago......it started to smoke i was going down hill off the gas pedal ....at the bottom of hill ...ht the pedal and smoke...i replaced the injectors and still smoked...all the time.....had a knock when reved up...thought it was a bad motor...truck has 120k.....bought new 80k motor from florida.....replased all injetors , then injector pump ....filter.....still smokes...wonder if other motor was bad....big costly job....sucks to be me....the wife is watching my progress
.....but i will try replacing the only thing left...pickup pump....thanks
Posted by
Dieseljunky2
24 days and 19 hours ago.
Answer
If this fixes your problem, please use the accept button here. It is the only way I get paid for my service to help you. If you still need assistance, then just reply. Thanks
24 days and 19 hours ago.
Reply
question on the pick up pump....i have a new one ...i did not put it on because the lifting arm is different than my original....original has curve in it the replacement on is almost straight and little bit longer, but the guys at the auto advance say thats the replacement and could be re designed....what do you think....looks like from outside the same pump
Accepted Answer
Hold the two pumps side by side, even out the gasket mounting surfaces (I usually hold them on the edge of a 2x4) notice where the old pump was hitting the camshaft on the arm. If the new pump arm will hit the camshaft in the same spot, it should work. There are times when the designs are changed for copyright reasons. If it does not look like the pump arm will contact the cam in the same spot, it is not the right pump.
Expert:
Dieseljunky2
Pos. Feedback:
99.5 %
Accepts:
Answered:
10/28/2009
Ford Mechanic
ASE Certified, Ford Certified, Cummins Certified, & 20+ years in field experience
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