Engine misfire with low fuel in my rear tank??? - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 06-02-2012, 06:24 PM Thread Starter
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Engine misfire with low fuel in my rear tank???

I have a 97 PSD 2wd 4 door, auto 3.55 axle, 163k miles that I've owned since 151k miles. I've never experienced what I did in the last couple of weeks. When my rear fuel tank is 1/8 full, my engine misses bad and has severe power loss. It's NEVER done this before but has done it the last 2 times I ran my rear tank down to 1/8 full or less. Have you guys experienced this? As soon as I fill it up with fuel the miss goes away completely, power is back like and should be and all is well. What's going on?
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post #2 of 11 Old 06-02-2012, 07:41 PM
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Uummmmm........I think your running out of fuel in that tank

Might want to fill it a little sooner.
If you want a more technical explanation, maybe the sender (which works with resistance) has worn a little and isn't as accurate at lower tank levels which would mean it isn't giving you a fair understanding on how much fuel is left.

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post #3 of 11 Old 06-03-2012, 04:15 AM Thread Starter
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Of course that sounds logical but doesn't explain why in the 10k+ miles that I've owned the truck it's never done this before... It's only done it on the last 2 rear tanks. I was just asking if this is a common problem to see if anyone else has seen the issue. Thanks for your reply.
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post #4 of 11 Old 06-03-2012, 07:12 AM
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Quote:
Originally Posted by fixitforfree View Post
Of course that sounds logical but doesn't explain why in the 10k+ miles that I've owned the truck it's never done this before... It's only done it on the last 2 rear tanks. I was just asking if this is a common problem to see if anyone else has seen the issue. Thanks for your reply.
Your suction foot in the tank has broken into pieces, it happened to me, unbolt the bed, tilt it up and pull the pickup tubes. The are available from ford or ebay.

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post #5 of 11 Old 06-04-2012, 04:32 AM Thread Starter
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Southend, I assume the suction tube/tank assembly I need to remove for access comes out of the top of the tank? How much approx. do I need to tilt the bed?
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post #6 of 11 Old 06-04-2012, 05:19 AM
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Southend, I assume the suction tube/tank assembly I need to remove for access comes out of the top of the tank? How much approx. do I need to tilt the bed?
Yes, take out 4 bolts, disconnect the harness, I lifted up on the drivers side about a foot or so and propped it up with a 4x4. I did it myself, just be careful. Then clean of the top sensor area, and tap the locking ring off. Ease out the assembly, and the rubber foot will probably be in the bottom. Now, with that said, I ended up dropping the tank, because it had about a inch of sludge, water and rust in the bottom. I did not expect that. Lifting the bed and dropping the tank, were easier than I expected.

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post #7 of 11 Old 06-04-2012, 09:49 AM Thread Starter
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southend, I haven't found it on eBay yet but went the the Ford website with some confusion. Will I have to buy the entire fuel pump/sending unit to get the part you say I have broken? I don't know yet if I have a plastic or steel tank. I see the locking ring you speak of but I want to get a good look at the part I likely have faulty before doing the work. Do you know the Ford part number? Thanks for your help.
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post #8 of 11 Old 06-04-2012, 02:39 PM
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http://www.powerstroke.org/forum/sho....php?p=3099363

This is a post from the 6.0 forum, it looks exactly the same.
One dealer tried to tel me I had to buy the whole thing, I just went to a knowledgeable dealer and he ordered it for me. I would personally get a ford part. I hope this helps. I'm still learning this forum thing.:thumbup:

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post #9 of 11 Old 06-04-2012, 02:52 PM
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Here it is....

What controls fuel pressure on our trucks??

Sent from my SCH-I500

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #10 of 11 Old 06-04-2012, 05:16 PM
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You have a steel tank, unless it's aftermarket. No fuel pump.
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