P0281 with smoke
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Senior User
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From: Roseville
p-281
Chris,
Rotational velocity is still at 10% after replacing the injector with a reman from Clay. I have not moved #7 anywhere yet but I can. The reason why I never moved it was #7 is a different injector with the same issue. What would cause the Passenger side to not work proper and be over a 100 degrees colder on all holes. Could it be a IDM or a ground issue, bad coil on one of the injectors.Something is shutting that bank down or did I do something when I pulled all the injectors out while replacing the injector o-rings. Also there is a heavy miss still. What's next to test?
Rotational velocity is still at 10% after replacing the injector with a reman from Clay. I have not moved #7 anywhere yet but I can. The reason why I never moved it was #7 is a different injector with the same issue. What would cause the Passenger side to not work proper and be over a 100 degrees colder on all holes. Could it be a IDM or a ground issue, bad coil on one of the injectors.Something is shutting that bank down or did I do something when I pulled all the injectors out while replacing the injector o-rings. Also there is a heavy miss still. What's next to test?
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Senior User
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From: Roseville
P-281
While I had the injectors out I bought the clip for that issue. But you never know. I plan on doing an ohm test tonight to check. I did this ohm test at the beginning of the trouble but I did pull the cover off. Also plan on looking at the IPR duty cycle again with the IPR preasure with and with out the ICP. But I don't think those are the issue.
Post Fiend
Joined: Mar 2007
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From: Texas
There's also a chance that your IR gun just isn't getting as good a reading on the passenger side. If rotational velocity for the other 3 cylinders look good, then I'd skip over the temp difference for now.
The odds of #7 continuing to have the exact same issue are getting smaller. If you swap #5 and #7 and you still get the same code and the same 10% perdel, then you've narrowed it down to a wiring issue. If the problem moves to #5 hole, call Clay about an exchange.
The odds of #7 continuing to have the exact same issue are getting smaller. If you swap #5 and #7 and you still get the same code and the same 10% perdel, then you've narrowed it down to a wiring issue. If the problem moves to #5 hole, call Clay about an exchange.
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From: Roseville
p-0281
Haven't swapped #5 and #7 injector yet. What I did do was Ohm out the plug.All injectors are at 2.5 and the glow plugs are at .5. Also I did a buzz test and got a code P1298 IDM failure. But its not coding out every time. 2 out of 5 buzz tests it did get the code P1298. Would a IDM cause smoke.
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Senior User
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From: Roseville
P-0281
rotational velocity Cylinder #7 10%, #5 1%, # 3 .8%, #1 0%. The other bank are all at 0 %. Tested at 155 degrees.IPR was at 486 psi. Fuel psi was 0 that was weird. Con test is still showing P281. KOER test ok.
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Senior User
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From: Roseville
P-0281
Per AllData if a P1298 is present replace the IDM. I'm going to send mine back to Auto Computer Exchange for testing and also request the correct one. The one they sent me was for a AB injector not a AD.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I wouldn't replace the IDM strictly based on the code until you're ruled everything out. Since you got your from A C E, and they sent you one for AB injectors, it's a good idea to go ahead and have them swap you for a 120v IDM. Maybe you'll get lucky and the IDM will fix the issue, but I'm guessing either injector or wiring issue.
Also, we can't read fuel pressure with a scanner. There is no electrical sensor to read the data from.
Also, we can't read fuel pressure with a scanner. There is no electrical sensor to read the data from.
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From: Roseville
P281 smoke
Not much change tonight. I changed the CPS for good measure. I had a grey one that looks like the black one in it and put in a newer grey one. I will order the black one from clay in the am. I thought I had a black one in it. I cant get the buzz test to fail trying a few times. A C E sent me a 120V AA idm last Sept so I'm sending it back to them and told them to send me the corect 120V AD. I dont think this will fix the miss or the smoke but if someone thinks it might chime in and let me know. I ran down the wiring tonight and see nothing jumping out at me. Everything wiring is covered until it get to the head but I did pull on things to check any way.
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From: Roseville
Blue smoke
Today I swapped Injector #7 and injector #5 and the resault was the same, blue smoke. Then I pulled injector #7 harness plug from the injector and the smoke went away and ran the same with a miss. I used a heat gun and found that injector #7 is about 216 degrees and #1,5 and 3 are around 170 degrees. Not sure if #7 being hotter means anything. Also I put a oil clean thru the motor and then changed the filter and oil with changing the oil out of the HPOP. Also sent back the IDM and got another reman IDM, but I still think this one has issues. When doing a buzz test a bunch of codes happen High low circut also when doing con tes it has Injector #3 and injector #7 balance fault. Rotational volocity from #7 is 8.5% and #3 is 3.5 %. Not really sure if this company is that great. Tomorrow I'm going to put my friends IDM in my truck. But the big question is why the blue smoke. Could it be rings. Also last time I omh the harness the injectors where 5 omhs and the glow plugs where .8 ohms.
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Senior User
Joined: Aug 2009
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From: Roseville
Today I swapped Injector #7 and injector #5 and the resault was the same, blue smoke. Then I pulled injector #7 harness plug from the injector and the smoke went away and ran the same with a miss. I used a heat gun and found that injector #7 is about 216 degrees and #1,5 and 3 are around 170 degrees. Not sure if #7 being hotter means anything. Also I put a oil clean thru the motor and then changed the filter and oil with changing the oil out of the HPOP. Also sent back the IDM and got another reman IDM, but I still think this one has issues. When doing a buzz test a bunch of codes happen High low circut also when doing con tes it has Injector #3 and injector #7 balance fault. Rotational volocity from #7 is 8.5% and #3 is 3.5 %. Not really sure if this company is that great. Tomorrow I'm going to put my friends IDM in my truck. But the big question is why the blue smoke. Could it be rings. Also last time I omh the harness the injectors where 5 omhs and the glow plugs where .8 ohms.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Give me a little clarification here. Before we had rotational velocity values of
#7 = 10%
#5 = 1%
You're saying you swapped 5 & 7 and now you get
#7 (the old #5 injector) = 8.5%
What did #5 (the old #7) show?
Sounds like a wiring or IDM issue if the bad readings stay in the same hole. Is there any blowby or noises that would lead you to believe it might be mechanical? I can't think of one that would result in higher cylinder temps.
How much rougher does it run with #7 unplugged, or is it about the same?
#7 = 10%
#5 = 1%
You're saying you swapped 5 & 7 and now you get
#7 (the old #5 injector) = 8.5%
What did #5 (the old #7) show?
Sounds like a wiring or IDM issue if the bad readings stay in the same hole. Is there any blowby or noises that would lead you to believe it might be mechanical? I can't think of one that would result in higher cylinder temps.
How much rougher does it run with #7 unplugged, or is it about the same?
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From: Roseville
blue smoke
Hole #7 never changed still 8.5% with changing the injector with #5, hole #5 is still 1% with the reman injector #7.
I pulled the harness out and ohm it out and it checks out. I put it back in and checked the ohms out side the harness and the injectors are all 2.8ohms and the glow plugs are .8 ohms. I'm not sure how to test the pig tail going to the IDM. This IDM is the second one from Auto computer exchange. I was not able to pull my friends out to night and test with my truck but hope I can soon.
I dont hear anything that jumps out. It sounds like a normal diesel but with a miss. Also by unpluging injector #7 it stops smoking and still has the miss.
Would a bad cup cause this. I'm not lossing water or gain any water.
I pulled the harness out and ohm it out and it checks out. I put it back in and checked the ohms out side the harness and the injectors are all 2.8ohms and the glow plugs are .8 ohms. I'm not sure how to test the pig tail going to the IDM. This IDM is the second one from Auto computer exchange. I was not able to pull my friends out to night and test with my truck but hope I can soon.
I dont hear anything that jumps out. It sounds like a normal diesel but with a miss. Also by unpluging injector #7 it stops smoking and still has the miss.
Would a bad cup cause this. I'm not lossing water or gain any water.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Just use your ohm meter with a lead on each end of the wire to check for continuity. Be sure to wiggle the harness while testing to check for any intermittent shorts. This should help you out.
http://www.gbreman.com/docs/techbull...eplacement.pdf
http://www.gbreman.com/docs/techbull...eplacement.pdf