Down on boost and power.
Thread Starter
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More Turbo
Joined: Apr 2003
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Well, something changed. My wife and I went and picked up our dogs from somewhere so i decided to take the truck. Well it for sure runs better, but still not what I expected. I thought for sure it would have been because the IPR nut had fallen off. I was able to get 19lbs of boost, which isn't too bad. But I can still feel it has some slight missing/hesitation going on. Especially around the 23-2500 rpm area. The boost gauge doesn't seem like it moves as fast as it use too as well. I am not sure what else to try now. I will try a scanner my brother in law has, but i don/t know what it can and cant do. I have one at our shop, but It wont read my truck.
Tommorrow I will throw my extra crank sensor in, and go back to the 100 volt idm and see what happens. it seemed to start losing power around the time I put the 120 volt in. Is the 120 volt IDM grounded through the 3 bolts that hold it on?
Tommorrow I will throw my extra crank sensor in, and go back to the 100 volt idm and see what happens. it seemed to start losing power around the time I put the 120 volt in. Is the 120 volt IDM grounded through the 3 bolts that hold it on?
Cargo Master
Joined: Nov 2009
Posts: 2,558
Likes: 19
I will try check that out as well if what I did didn't work. I took the fuel bowl out and the fpr. I took everything all apart and blew threw everything with a compressor and cleaned it all real well. It wasn't bad at all. A little bit of junk at the bottom of the bowl and that was it. What I did notice though, was the brass nut that holds the magnetic solenoid on the IPR was in the valley and the solenoid was moving all over the IPR. My fault, I was the last one to take the IPR out. So I am hoping that was the problem. I will find out tomorrow when i pull the trailer to my shop. I never did find that piece of o-ring. I doubt it made it inside the fuel system though. The more I looked at where it came from the more I find it impossible it was in the fuel system. I think it just fell down into the valley.
I am going to re-seal the intakes on the heads though. They both seem to be seeping pretty bad. Where does all the oil come from? I know the valve cover vents right into the intake, but my truck doesn't use any oil so i was surprised to see how wet it was around the intakes. Especially the passenger side. What do I use to reseal them? Why do the power stroke engines vent into the intake. While the T444E engine vent to the open air? Must be for emissions.
Amazzing how many small things have gone wrong after I hit the 200k mark. I am now at 210k.
I am going to re-seal the intakes on the heads though. They both seem to be seeping pretty bad. Where does all the oil come from? I know the valve cover vents right into the intake, but my truck doesn't use any oil so i was surprised to see how wet it was around the intakes. Especially the passenger side. What do I use to reseal them? Why do the power stroke engines vent into the intake. While the T444E engine vent to the open air? Must be for emissions.
Amazzing how many small things have gone wrong after I hit the 200k mark. I am now at 210k.
Thread Starter
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More Turbo
Joined: Apr 2003
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I havnt resealed the intakes yet, in a few weeks when i pull the tranny I will.
What I have done so far was 1. take out the fuel bowl and fuel regulator on the side of the bowl. Cleaned them all out with compressed air. 2. Re-installed the flimsy nut and washer on the IPR that had fallen into the valley. 3. Replaced one o-ring i found was bad. The o-ring around the screen in the side of the bowl. 4. Ran one gallon of atf threw it. I just dumped a gallon in the rear tank when it was empty. I am sure it had at least a gallon of fuel mixed with it.
Other than that I have not done anything else, I still don't think i have found the real problem yet. I am starting to lean towards a weak fuel pump, or something oil related. Or heck it could be an injector issue. (hope not)
What I have done so far was 1. take out the fuel bowl and fuel regulator on the side of the bowl. Cleaned them all out with compressed air. 2. Re-installed the flimsy nut and washer on the IPR that had fallen into the valley. 3. Replaced one o-ring i found was bad. The o-ring around the screen in the side of the bowl. 4. Ran one gallon of atf threw it. I just dumped a gallon in the rear tank when it was empty. I am sure it had at least a gallon of fuel mixed with it.
Other than that I have not done anything else, I still don't think i have found the real problem yet. I am starting to lean towards a weak fuel pump, or something oil related. Or heck it could be an injector issue. (hope not)
Thread Starter
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More Turbo
Joined: Apr 2003
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I have been following your thread as well. They do sound similar but yours is much more extreme than mine. Mine runs fine at idle and driving around normally, but hook a trailer to it or put your foot in it and i can feel it hesitating and missing. Just like its starving for fuel. Just doesn't run like it did just a few short weeks ago.
Posting Guru
Joined: Nov 2007
Posts: 2,158
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From: West Texas
I think you just got some winter fuel and aren't used to it. I got a couple tank fulls of Bio last week without knowing it till I was nearly done filling up and it was even worse running than the winter grade diesel. half a bottle of power service in each tank made it run a ton better in both cases. We rarely even need winter diesel down here but when they do switch I get a lot of calls with power loss problems.
If you want to really feel some power I can trade tires with you. Mine will make it feel really scary powerful if you try accelerating. Darn firestones!
If you want to really feel some power I can trade tires with you. Mine will make it feel really scary powerful if you try accelerating. Darn firestones!
Thread Starter
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More Turbo
Joined: Apr 2003
Posts: 729
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I really don't think it is because of winter fuel. I have put 4 tanks through it since last friday. It ran the the same on all 4 tanks. All different fuel stations, at different parts of Oregon.
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Cargo Master
Joined: Nov 2009
Posts: 2,558
Likes: 19
After doing the injector orings my truck seems to idle better and have much better low end power. I am buying a full set of used injectors to rebuild and put in the truck other than that I need to do some hpop testing. I seem to have plenty of fuel pressure but something is wrong up in the rpms.
As far as fuel I have had the same problem for three years and am tired of dealing with it. If I always run napa fuel conditioner it runs much better but I can't get the stuff here in BC so I have to fix the problem.
As far as fuel I have had the same problem for three years and am tired of dealing with it. If I always run napa fuel conditioner it runs much better but I can't get the stuff here in BC so I have to fix the problem.
Cargo Master
Joined: Nov 2009
Posts: 2,558
Likes: 19
I havnt resealed the intakes yet, in a few weeks when i pull the tranny I will.
What I have done so far was 1. take out the fuel bowl and fuel regulator on the side of the bowl. Cleaned them all out with compressed air. 2. Re-installed the flimsy nut and washer on the IPR that had fallen into the valley. 3. Replaced one o-ring i found was bad. The o-ring around the screen in the side of the bowl. 4. Ran one gallon of atf threw it. I just dumped a gallon in the rear tank when it was empty. I am sure it had at least a gallon of fuel mixed with it.
Other than that I have not done anything else, I still don't think i have found the real problem yet. I am starting to lean towards a weak fuel pump, or something oil related. Or heck it could be an injector issue. (hope not)
What I have done so far was 1. take out the fuel bowl and fuel regulator on the side of the bowl. Cleaned them all out with compressed air. 2. Re-installed the flimsy nut and washer on the IPR that had fallen into the valley. 3. Replaced one o-ring i found was bad. The o-ring around the screen in the side of the bowl. 4. Ran one gallon of atf threw it. I just dumped a gallon in the rear tank when it was empty. I am sure it had at least a gallon of fuel mixed with it.
Other than that I have not done anything else, I still don't think i have found the real problem yet. I am starting to lean towards a weak fuel pump, or something oil related. Or heck it could be an injector issue. (hope not)
I will run some atf tomorrow night.
Thread Starter
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More Turbo
Joined: Apr 2003
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I will try to take a picture tomorrow. No promises though.
If you look at the HPOP reservoir. Find the plug that is on the top. It takes a 1/4 ratchet, then basically look straight behind that on the back side of the reservoir. It will be almost down in the valley. it will have a little plug with 2 wires, maybe three, on it. The plug will be kinda piggy back on a round magnetic solenoid. Somebody else could probably explain it better than me. I know I have seen a picture on here where somebody has pointed it out.
If you look at the HPOP reservoir. Find the plug that is on the top. It takes a 1/4 ratchet, then basically look straight behind that on the back side of the reservoir. It will be almost down in the valley. it will have a little plug with 2 wires, maybe three, on it. The plug will be kinda piggy back on a round magnetic solenoid. Somebody else could probably explain it better than me. I know I have seen a picture on here where somebody has pointed it out.
Thread Starter
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More Turbo
Joined: Apr 2003
Posts: 729
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Well I pulled a skid steer today and the thing ran great all of a sudden, 21 psi of boost, no miss, no hesitation ran perfect for about 30 miles Then when I was coming home at the end of the day, it started running poorly again. Doing the same thing, 15 psi max boost, missing, hesitating. Same tank of fuel. I need to fuel up again tomorrow, so I will see if it runs better.
I just don't get it.
I just don't get it.
Cargo Master
Joined: Nov 2009
Posts: 2,558
Likes: 19
I noticed in my truck that it runs better a little better above a 1/4 tank. I wonder if air is getting in somewhere. While pulling a bit of a grade I also notice a bit of a cyclic power with the missing. Kinda like it wants to run good then gives up for a moment and the more I put my foot into it the worse the missing/shaking gets. I have a day off today and I am going to poke around in it.