Injector problem?
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Trailering
Joined: Jan 2011
Posts: 19
Likes: 2
Injector problem?
96 f350 cc 322,xxx
Truck starting running poorly, missing. Got home on 4 cylinders. Took valve covers off, pass side rear inj (no7) has no change when unplugged. Removed IDM after having it checked in another truck and ran fine. Probed harness with OHM meter and all wiring from IDM harness to engine checked fine. Went to injector that is not firing and the solenoid? on the top is loose. Im not sure where to go next, tighten and see if it will operate or is something out of whack in there (Shorted out?). This is the farthest ive been inside a diesel at this point. All injectors have the same numbers on them except for no1. which was probably changed by the po. Thanks in advance
Truck starting running poorly, missing. Got home on 4 cylinders. Took valve covers off, pass side rear inj (no7) has no change when unplugged. Removed IDM after having it checked in another truck and ran fine. Probed harness with OHM meter and all wiring from IDM harness to engine checked fine. Went to injector that is not firing and the solenoid? on the top is loose. Im not sure where to go next, tighten and see if it will operate or is something out of whack in there (Shorted out?). This is the farthest ive been inside a diesel at this point. All injectors have the same numbers on them except for no1. which was probably changed by the po. Thanks in advance
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Tighten that solenoid down and see how it acts. What is the difference in the numbers on the no. 1 injector? Are they all AA code (meaning that the P/N starts with AA) injectors?
Edit: you just beat me, Mike. At least we agree.
Edit: you just beat me, Mike. At least we agree.
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
I'm not sure on the TQ spec. I would just make it tight. That or email Jim at Rosewood Diesel. I am sure he knows.
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Trailering
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Post Fiend
Joined: Dec 2009
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From: Livoina,La
Here is a old post from Jim that I copied and paste
Re: Difference Between AA, AO and AC Single Shots?
AA and AO are essentially the same thing. AO were in '94.5 - E'95, then AA in '95.5 - '97. Why they didn't just start with AA is beyond me...
AC were in the T444E High Output motors and we can still get them brand new. They are equal to what we build as a Stage-1.
__________________
RosewoodDieselShop.com 440-286-1990, C******, OH.
Specialists in 7.3L Power Stroke injector restoration.
DzlJim.com
Re: Difference Between AA, AO and AC Single Shots?
AA and AO are essentially the same thing. AO were in '94.5 - E'95, then AA in '95.5 - '97. Why they didn't just start with AA is beyond me...
AC were in the T444E High Output motors and we can still get them brand new. They are equal to what we build as a Stage-1.
__________________
RosewoodDieselShop.com 440-286-1990, C******, OH.
Specialists in 7.3L Power Stroke injector restoration.
DzlJim.com
Thread Starter
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Trailering
Joined: Jan 2011
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back to the drawing board. I did tighten the screws but injector was still loose. removed solenoid and tightened the 4 bolts that hold down the top of the injector as this was the problem. she runs better but still has a slight miss but nothing like it was. oil flows out the back of the relief on the injector and out the deflector. unplugging the injector made no difference. gonna swap out this injector n see how it acts
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 103
From: Ashland City, TN
AA's and AO's are the same.
The only difference is the location of the oil holes on the injector body.
I have 7 aa's and 1 ao in my truck.
While your in there, i'd just be prepared to pull injectors and check o-rings and replace them.
Thats my WAG on this situation.
The only difference is the location of the oil holes on the injector body.
I have 7 aa's and 1 ao in my truck.
While your in there, i'd just be prepared to pull injectors and check o-rings and replace them.
Thats my WAG on this situation.
