over fueling?
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Logistics Pro
Joined: Jun 2009
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From: metairie, LA
all the injector pins ohmed out at 3.5-4 ohms. i have not had a chance to pull the valve covers to see if any pins are burnt in there, but we will do that tomorrow. also, on another note, the icp psi at idle stays around 500. sometimes it will drop lower for a sec. when driving, it can go as hi as 3000. we replaced the ipr, no change. replaced the icp, no change. on a buzz test we are showing cyl 4 and 8 open circuit so we will pull the valve covers and see what is going on. for some reason my scan gauge will not run a cct. when i try i get a 1278 code. anybody know what that is?
Post Fiend
Joined: Feb 2009
Posts: 8,773
Likes: 1
From: Texas Coast
P1271-
P1278
High to low side open cyl. # 1-8 Open circuit, open injector, failed IDM
If your getting just the 8 then its a inj 8 related issue
and then from my friend Roland
https://www.ford-trucks.com/forums/8...-inj-code.html
just in case you missed this portion of the thread
Originally Posted by bfife
Never replaced the IDM. what I did find was a bad solinoid on the injector. I swapped the solinoids between the injector with the code and another injector and the code followed the solinoid. I bought a new one off Ebay and the light went away. the mileage also came back and the idle smoothed up. good luck
Barney
P1278
High to low side open cyl. # 1-8 Open circuit, open injector, failed IDM
If your getting just the 8 then its a inj 8 related issue
and then from my friend Roland
https://www.ford-trucks.com/forums/8...-inj-code.html
just in case you missed this portion of the thread
Originally Posted by bfife
Never replaced the IDM. what I did find was a bad solinoid on the injector. I swapped the solinoids between the injector with the code and another injector and the code followed the solinoid. I bought a new one off Ebay and the light went away. the mileage also came back and the idle smoothed up. good luck
Barney
Lead Driver
Joined: Sep 2005
Posts: 9,399
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From: Norco,CA
Sorry didn't read the hole post yet!
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
480 - 500 ICP is normal idle on a super duty. Are there any other symptoms other than the fuel smell? With the P1316, I'd agree with Rick about checking the UVCH. On the superduty the pins don't get burnt as often as the OBS, but the plugs come loose all the time which is why Rick mentioned the shims or 50 cent mod. Sometimes the pins do get burnt so check those too.
Is he getting a CEL now? Any rough running?
Is he getting a CEL now? Any rough running?
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Logistics Pro
Joined: Jun 2009
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From: metairie, LA
we havent had a chance to pull the valve covers yet. been stuck putting a rear end in mine. it does idle rough and the cel comes on sometimes with the injector codes. i do belive the connector may be loose or burrnt, but want to know if that would cause the fuel and smoke?
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
It would cause an injector not to fire properly, which could easily cause fuel or smoke. If you've got a rough running engine and the CEL with a P1316, pulling the valve covers is the first thing I'd do.
I really don't understand why so many OBS guys think the super duty motor is some mystical creature. No offense towards you George, but don't try to over think this. Your answer is likely on page 1 of this thread. When you get your rear end taken care of, pull the valve covers. While you're in there, shim the UVCH connector and tighten the lower injector hold down bolts to 120 in lbs and the rocker arm pedestal bolts to 20 ft lbs. You'll probably find a few loose injector bolts and the truck will sound quieter when you're done.
I really don't understand why so many OBS guys think the super duty motor is some mystical creature. No offense towards you George, but don't try to over think this. Your answer is likely on page 1 of this thread. When you get your rear end taken care of, pull the valve covers. While you're in there, shim the UVCH connector and tighten the lower injector hold down bolts to 120 in lbs and the rocker arm pedestal bolts to 20 ft lbs. You'll probably find a few loose injector bolts and the truck will sound quieter when you're done.
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Logistics Pro
Joined: Jun 2009
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From: metairie, LA
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Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Wait, I mean big manly injectors don't need that much ICP to run right. Yeah, that's it.
Post Fiend
Joined: Feb 2009
Posts: 8,773
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From: Texas Coast
DITTO
P1271-
P1278
High to low side open cyl. # 1-8 Open circuit, open injector, failed IDM
If your getting just the 8 then its a inj 8 related issue
and then from my friend Roland
https://www.ford-trucks.com/forums/8...-inj-code.html
just in case you missed this portion of the thread
the injector with the cod
Originally Posted by bfife
Never replaced the IDM. what I did find was a bad solinoid on the injector. I swapped the solinoids between e and another injector and the code followed the solinoid. I bought a new one off Ebay and the light went away. the mileage also came back and the idle smoothed up. good luck
Barney
P1278
High to low side open cyl. # 1-8 Open circuit, open injector, failed IDM
If your getting just the 8 then its a inj 8 related issue
and then from my friend Roland
https://www.ford-trucks.com/forums/8...-inj-code.html
just in case you missed this portion of the thread
the injector with the cod
Originally Posted by bfife
Never replaced the IDM. what I did find was a bad solinoid on the injector. I swapped the solinoids between e and another injector and the code followed the solinoid. I bought a new one off Ebay and the light went away. the mileage also came back and the idle smoothed up. good luck
Barney
My wag still holding and anti up
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Logistics Pro
Joined: Jun 2009
Posts: 4,116
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From: metairie, LA
just got done with the 50 cent mod. same thing... smokes like crazy, and codes 1316 and the number 8 cyl. i did notice that number 8 has an AE injector instead of an ad. isnt that normal or could that be a problem? i dont know where else to look. and yes, none of the pins were burnt.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
AE is the stock injector on #8. How rough is it running? Does it feel like it's only running on half the cylinders? Can you buzz test it to see if any other codes show up? As Rocky mentioned, a bad injector solenoid can cause the code and rough running. The bad solenoid I've seen shut down the entire bank of the engine. An ohm test might also show you which injector is the problem. The SD has the 9 pin connector. Check the center pin against the 3rd, 4th, 6th, & 7th pins. 1, 2 8, & 9 are glow plugs.
Swapping solenoids around is a simple check that only requires a torx screwdriver. Were either of the connectors loose? Did you check for any burnt pins?
Swapping solenoids around is a simple check that only requires a torx screwdriver. Were either of the connectors loose? Did you check for any burnt pins?
Thread Starter
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Logistics Pro
Joined: Jun 2009
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From: metairie, LA
no burnt pins at all. i feels like only one or two injectors are not firing. we ohmed them all out and got between 3.5-4 ohms all the way around. sometimes we get a lil extra injector clatter. but that 1316 keeps coming up, no other codes except for number 8. maybe it is bad. we will try to swap solinoids and see what happens
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
If it feels like only 1 or two are not firing, maybe it's worth watching the oil discharge from each injector with the engine running. Does the code for #8 come from a buzz test or contribution test? #8 will often fail the contribution test due to the AE injector.
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Logistics Pro
Joined: Jun 2009
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From: metairie, LA
We will have to check the oil flow, I wish I had thought of that with the valve covers off. Number 8 came up on the last cct but I don't think it did on the last buzz test. 1316 comes up no matter how many times we clear it. Maybe a broken wire somewhere, or bad solenoid?
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