Cracked Fuel Filter Housing - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 15 (permalink) Old 11-03-2018, 12:05 AM Thread Starter
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Cracked Fuel Filter Housing

So in trying to check out my IPR Valve I noticed some air blowing when I turned the key on. It sounded like itís coming from the filter housing. So I got to looking and found a small crack. My question is, will this possibly cause a no start type situation?

Iím sure it got cracked when I had the engine pulled to do the bed plate seals.

Now I canít get the silly thing to start. The ipr is not registering anything on my scan gauge. And Iím getting 0 on the icp. My guess is the ipr is bad since itís not registering any duty cycle. Am I on the right track?

Itís an 07 model btw. Thanks!


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post #2 of 15 (permalink) Old 11-03-2018, 12:39 AM
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Re: Cracked Fuel Filter Housing

If you have no IPR % duty cycle, then there is an issue preventing the PCM from commanding it.

The IPR % duty cycle value is a commanded value ONLY. It does not represent anything at all with regards to the IPR valve position or actual operation.

Mark
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post #3 of 15 (permalink) Old 11-03-2018, 01:24 AM
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Re: Cracked Fuel Filter Housing

Well if you got air coming out of the fuel filter there, that would certainly cause a no start.

Shoulda bought a Cummins.

1997 F250 7.3L XLT, 4x4, 5spd, 315K, TS chip, BD Turbo-Thruster II, Donaldson 6637 filter, 4" straight piped dual exit SOLD

1995 F350 CCLB 6.0L WIP


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post #4 of 15 (permalink) Old 11-03-2018, 01:27 AM Thread Starter
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Re: Cracked Fuel Filter Housing

Quote:
Originally Posted by Cummins Junkie View Post
Well if you got air coming out of the fuel filter there, that would certainly cause a no start.


Perfect. That was what I wanted to hear. Iím planning on installing a new one if the dealer has it in the morning. I just wanted a confirmation of what I thought. Thank you.

I still donít fully understand the ipr duty cycle issue but Iíll cross that bridge later I guess.


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post #5 of 15 (permalink) Old 11-03-2018, 01:56 AM
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Re: Cracked Fuel Filter Housing

Well now, if you are actually pushing air out of there, that means the pump isnt pumping fuel into that bowl. So, if thats the case, you have a deeper issue at hand.

Shoulda bought a Cummins.

1997 F250 7.3L XLT, 4x4, 5spd, 315K, TS chip, BD Turbo-Thruster II, Donaldson 6637 filter, 4" straight piped dual exit SOLD

1995 F350 CCLB 6.0L WIP


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post #6 of 15 (permalink) Old 11-03-2018, 03:34 AM
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Re: Cracked Fuel Filter Housing

A crack in the fuel filter bowl will not be responsible for no IPR command from the PCM - period.

In fact, you should see fuel leaking out, and if it isn't much fuel then it wouldn't be the cause of the no-start. The PCM has no way of knowing that a crack and a leak exists.

The fuel pump can deliver quite a bit of fuel and a tiny leak at that point wouldn't impact fuel delivery.

As stated above, air coming out at that point is an issue caused by other things wrong.

I think I would be doing a bubble test as soon as possible ....

I would also be looking to see if I had cam/crank sync and FICM sync when cranking. Also look for a fuel pulse width signal and the cranking rpm value.

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post #7 of 15 (permalink) Old 11-03-2018, 08:23 PM
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Re: Cracked Fuel Filter Housing

i would look long and hard at that "Crack" before replacing the whole unit

it just looks like a gouge in the aluminum

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post #8 of 15 (permalink) Old 11-03-2018, 09:06 PM
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Re: Cracked Fuel Filter Housing

You the one that pulled the bed plate seals out with the front cover? I remember that, glad you got em resealed.

Why don't you pull the cap and see if there is fuel or not?

Sometimes these engines take forever to start after extensive work and sometimes they start right up. No idea why.

Also, without any ipr command, she ain't gonna start, regardless of fuel.

Just some thoughts.

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post #9 of 15 (permalink) Old 11-04-2018, 12:06 AM
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Re: Cracked Fuel Filter Housing

Depends on the work you did bud. Like if you pulled injectors, you gotta pull the oil rails to get to em, which you end up at least partially draining. Pump's gotta build that pressure again, which may take a bit.

Now you got an idea why.

Shoulda bought a Cummins.

1997 F250 7.3L XLT, 4x4, 5spd, 315K, TS chip, BD Turbo-Thruster II, Donaldson 6637 filter, 4" straight piped dual exit SOLD

1995 F350 CCLB 6.0L WIP


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post #10 of 15 (permalink) Old 11-04-2018, 12:17 AM Thread Starter
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Re: Cracked Fuel Filter Housing

The seam on the filter housing was split. I think the chain put that gouge in it and caused the split. I installed a new one and went ahead with the blue spring upgrade too.

Yeah I got everything sealed back up. But I donít have much oil pressure now. Itís only filling the filter housing about Ĺ way when I tested the base oil pressure. And no signal to the gauge. Iíve cranked for days on this thing and itíll sputter and ďrunĒ for maybe a second before dying again.

Iím loosing my religion over this thing not starting. Itís infuriating.

Any ideas where I should go next?


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