Major Problems with my 7.3l
Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
quick question is your wait to start light coming on and going off? If it is not coming on you need to recheck your fuses. You cannot depend on checking fuses with eyes but a test light. Ive had fuses that appear good buy were bad.
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Senior User
Joined: Mar 2007
Posts: 491
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From: Kingsland, GA
Ok, still turning it over and still no life in the thing. My Enginuity comes tommorrow, maybe it will throw me a code or something. I do however, hear a hissing noise when I turn my key on, It's coming from either the fuel/water separator or the HPOP. I also wonder if I might have a bad pump and I was curious if anyone could tell me some symtoms of that, or even a way to test it.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Is your fpr leak fixed? You can test the fuel supply by slightly cracking then opening the filter bowl drain valve after an assistant turns the key and you should have a strong flow, not gravity leak. You will need to hook up a drain hose from the tube to a suitable container so you can observe this. While this is not the most scientific, it will show at least low pressure flow. A gauge would be best.
That hissing noise is no good. If you keep cranking and get nowhere, your FPR may be malfunctioning. I'd even bet your pump is fine. Look at the fpr and perhaps block the return line temporarily and see if it will fire. Can't/don't want to drive it that way though.
That hissing noise is no good. If you keep cranking and get nowhere, your FPR may be malfunctioning. I'd even bet your pump is fine. Look at the fpr and perhaps block the return line temporarily and see if it will fire. Can't/don't want to drive it that way though.
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Senior User
Joined: Mar 2007
Posts: 491
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From: Kingsland, GA
I'll try that, seems though that my fuel pump makes alittle gurgling noise sometimes when I turn the key on. It seems to be supplying good pressure but I will try what you said and see if it helps. I should be getting my Enginuity this afternoon sometime. I'm just waiting on the UPS truck now. Anyway, I'll try what you said and be back on around dinner or so to let yall know how it turned out. Another thought, if that o-ring blew out, could it be a sign of a busted HPOP (Just curious). Thanks again!
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Senior User
Joined: Mar 2007
Posts: 491
Likes: 0
From: Kingsland, GA
Originally Posted by Tenn01PSD350
Is your fpr leak fixed? You can test the fuel supply by slightly cracking then opening the filter bowl drain valve after an assistant turns the key and you should have a strong flow, not gravity leak. You will need to hook up a drain hose from the tube to a suitable container so you can observe this. While this is not the most scientific, it will show at least low pressure flow. A gauge would be best.
That hissing noise is no good. If you keep cranking and get nowhere, your FPR may be malfunctioning. I'd even bet your pump is fine. Look at the fpr and perhaps block the return line temporarily and see if it will fire. Can't/don't want to drive it that way though.
That hissing noise is no good. If you keep cranking and get nowhere, your FPR may be malfunctioning. I'd even bet your pump is fine. Look at the fpr and perhaps block the return line temporarily and see if it will fire. Can't/don't want to drive it that way though.
Postmaster
Joined: Dec 2005
Posts: 3,405
Likes: 0
Thats odd, everytime ITP sends something to me i get a Tracking Number everytime they tell me it has been shipped.
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Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
That's right. If it shipped out, there is a tracking #. Did you request one when you bought it and provide him with an email address.
As for your truck. It is starting to **** me off now too, (must be my own issues). As for blocking the return line, just pull it from the fpr and thread in something. I cannot remember the size off hand. 1/4 NPT????Don't run it like that for long, but it should still work.
As for your truck. It is starting to **** me off now too, (must be my own issues). As for blocking the return line, just pull it from the fpr and thread in something. I cannot remember the size off hand. 1/4 NPT????Don't run it like that for long, but it should still work.
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Senior User
Joined: Mar 2007
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From: Kingsland, GA
Originally Posted by John311t
Thats odd, everytime ITP sends something to me i get a Tracking Number everytime they tell me it has been shipped.
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Senior User
Joined: Mar 2007
Posts: 491
Likes: 0
From: Kingsland, GA
Originally Posted by Tenn01PSD350
That's right. If it shipped out, there is a tracking #. Did you request one when you bought it and provide him with an email address.
As for your truck. It is starting to **** me off now too, (must be my own issues). As for blocking the return line, just pull it from the fpr and thread in something. I cannot remember the size off hand. 1/4 NPT????Don't run it like that for long, but it should still work.
As for your truck. It is starting to **** me off now too, (must be my own issues). As for blocking the return line, just pull it from the fpr and thread in something. I cannot remember the size off hand. 1/4 NPT????Don't run it like that for long, but it should still work.
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
A dead CPS would just be too coincidental for me at this point. If the fuel is flowing i am thinking oil pressure. Once that AE gets here connect to the truck and select Engine RPM, Injection Control Pressure, and Injection Control Duty Cycle in live data and then crank and let us know what values you see.
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Senior User
Joined: Mar 2007
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From: Kingsland, GA
Originally Posted by amiller93
A dead CPS would just be too coincidental for me at this point. If the fuel is flowing i am thinking oil pressure. Once that AE gets here connect to the truck and select Engine RPM, Injection Control Pressure, and Injection Control Duty Cycle in live data and then crank and let us know what values you see.
