Fuel pump question - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 07-05-2013, 06:59 AM Thread Starter
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Fuel pump question

Hey all!

My truck will be fine for about a mile in the morning, then the SES light comes on and it has no throttle response and runs rough, like its tripping over itself. Then it will randomly go off and the throttle comes back but it makes a weird, loud, uneven, flutering hissing noise and jumps and bucks on acceleration with the uneven noise......

Could it be fuel supply as in the pump? It has over 290,000 miles.....



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #2 of 15 Old 07-05-2013, 07:18 AM
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Welcome to guzzle's In-tank Hutch Mod Web Page

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #3 of 15 Old 07-05-2013, 07:20 AM Thread Starter
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already done it.......



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #4 of 15 Old 07-05-2013, 07:22 AM Thread Starter
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well, not exactly like that..... my picj up foot was shot, it had come apart in many pieces so I just made my line long enough to lay on the bottom of the tank....



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #5 of 15 Old 07-05-2013, 07:29 AM
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and...a filter in between, tank and pump? Got f/p gauge?

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #6 of 15 Old 07-05-2013, 07:51 AM Thread Starter
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um...... not yet...... on both of them



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #7 of 15 Old 07-05-2013, 07:53 AM Thread Starter
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Im hoping to get a scangaugeII and that supposedly moniters F/P for our trucks



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #8 of 15 Old 07-05-2013, 07:57 AM
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ok, so you removed the "pick-up" foot, of the sending unit, correct? Is the "mixing" chamber still in the equation, of the sending unit? If so, then you have YET to do the Hutch mod, meaning, its probably all clogged up and causing the fuel restriction problem. Drop the tank and have another go at it. Might as well had done it right the first time...

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #9 of 15 Old 07-05-2013, 07:59 AM
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Quote:
Originally Posted by maddawg89 View Post
Im hoping to get a scangaugeII and that supposedly moniters F/P for our trucks
No, it wont. There's no "signal" going throughthe pcm, from anywhere on the fuel delivery system, to get a reading. Got to install a pressure signal at fuel bowl pre or post filter, to get reading...Maybe scan gauge comes with a "pigtail" to incorporate a signal for f/p, but you'll still need to install the pressure sensor at fuelbowl.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #10 of 15 Old 07-05-2013, 08:06 AM Thread Starter
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Quote:
Originally Posted by timmyboy76 View Post
ok, so you removed the "pick-up" foot, of the sending unit, correct? Is the "mixing" chamber still in the equation, of the sending unit? If so, then you have YET to do the Hutch mod, meaning, its probably all clogged up and causing the fuel restriction problem. Drop the tank and have another go at it. Might as well had done it right the first time...
lol! I completely removed the mixing chamber. The screens were 95% or more blocked. I got rid of that, did my best to clean out the lines in the sending unit and added all the hoses like guzzles site says to. The only thing I did different was not having the foot, just making it longer and laying it on the bottom of the tank.



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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