2002 f350 whats the best way to know if a electronic injector is missing?feels like numb one exhaust is colder then other and it dont clear up after running for a but like it would if it was a bad glow plug.
And my 01 f350 is popping codes and its hard to start and wont go when you floor it till it warms up
p-1130
p-1670
p-0381
p-1316
sometimes it spits 1311 too

You could unplug the injectors individually while it's running, if you unplug one and it doesnt change the way the engine is running, then you found one thats not working.

ok so take the valve cover off and unplug the suspected injector and then does it put out so much oil that it be a nightmare mess or can you run it with the valve cover off?

the 7.3's have issues with the wiring harness's under the valve covers. it is probably one of them needing replacment

http://www.dieselspecialists.net/superchipspdf/0147AFordDTCReaderManual.pdf

all those error codes are listed.

you could have a bad glow plug in there as well as a bad harness.

ok most of the codes on the one truck was all injector and glow plug circuit faults and some fuel at max code ? is that because of the programmer

one of your valve cover harness's came undone. I would pull the valve cover off the cold side and inspect the terminals. If they are good clean them and use some superglue on the connector under the valve cover and put it back together. If it still does not fix it go to the ford dealer and get 2 new valve cover gaskets and under valve cover harness's. If one side is bad the other side is not far behind.

the truck that has codes all the time saying glow plug and injector and fuel limit code runs fine after it was up and you start driving it down the road it clears up and its like getn hit with a shot of something. And it some times will make a really wierd chirp under the hood and will start powering down. And this thing is a night mare to start in the morning if its not pluged (block heater)if its been plugged in it will start though but you got to drive it for about a min before it clears up

The other ford is the one with the mis and im thinking its numb one injector it misses all the time even after its warmed up.
both trucks are 2001 area fords w 7.3 diesels

the truck that will not start in the cold most likely needs a glow plug relay.

the other truck needs a new under valve cover harness.

I pulled the valve cover off and started unplugging the injectors and wiggled the undervalve cover harness connector,the connector made no change at all usually it gets loose and then has the problem and ford even offers a wedge kit to fix that, so i started the truck w numb one injector unpluged sounded the same but when you plug it back in it does run a little smoother but it dont quite have the same effect as when you unplug the other injectors, it makes a big change when you unplug the others and not as much on the one injector.So im thinking weak injector?

Ill check the glow plug relay on the other truck tommorow and i think it has two bad glow plugs too ill give the results to that truck when im done.

When my 99 7.3 lost an injector you could tell. The fuel mileage was horrible and it threw a code, but I can't remember what it was. Also had no power on hills and at idle it would surge. I also had Ford put the wedges in my harness, it was throwing a code for the PCM and I couldn't find any shorts or bad connections. It was an intermittent problem, sometimes it'd run great, sometimes it wouldn't. After the wedges it cleared right up, until i lost an injector six months later. I think my programmer had something to do with the injector going out. It's an expensive fix for one injector. Don't know if any of this helps but that's my experience. Good luck

It was two weak injectors, harness's wasnt the problem and the strange thing was it didnt send out any injector failure codes.I scanned it myself no codes on the truck that was missing.Injector were still working but it wasnt as noticable rpm drop on those two like the others!

Now to fix the truck that hard to start! i pulled the valve cover off and will be testing the glow plugs and relay to see whats going on there.

You dont need to pull the valve covers to test the GPs :)

change the oil too.

How do you test the glow plugs without pulling the valve cover?

How do you test the glow plugs without pulling the valve cover?

Simple resistance test at the harness :smokin:

wish i would have thought of that last time I had to replace my glow plugs, haha. Thanks

The valve cover harnesses are known to fry as well as the injecor pigtails.
Depending on how many miles are on the engine I'd replace it all.
I did mine at 150K, GP's, valvecover gaskets/harnesses, injector harnesses, and injector o-rings, think it was about $500 but worth the trouble for it to run like new again.

Where did you get the injector o rings for ? or just regular o rings worked?

By the way the first truck came back that had the miss well its no longer missing it just simply acts like it runs out of fuel every 40 or 50 miles itll start dieseling you pull over for a min and let it idle and it runs normal again?? Changed the fuel pump and it still does it but only when its got a load on it? Scanned it again and got new codes this time p1211 and a p0603 what is a irp valve?

I hope you got new CPS's in these trucks. They can magnify the problem more. Ford had a recall on them if you didn't know.

And, as far as cold starts, its more than likely your GPR. Glow Plug Relay, my truck wouldn't start for CRAP, turns out my GPR actually had a meltdown and cooked itself pretty good.

If you buy new glow plugs, get the ZD-11 ones, do NOT buy anything other than Motorcraft glow plugs, autolites will swell up after a little use.

And you can get the GPR cheaper at an International Dealership.

Here are your codes:

P0603 - Internal Control Module KAM Error
P1211 - IPR ICP pressure above/below desired Continuous and KOER on-demand test IPR valve failed, stuck, or shorted to ground

And dont you mean an IPR Valve?

IPR: Injection Pressure Regulator Output; The PCM controls the high pressure oil system by varying the duty cycle of the IPR. The IPR controls the oil bypass circuit of the high pressure pump. 0%=full return to sump (open valve), 100%=full flow to injectors (closed valve). The PCM monitors the system with the ICP input. The PCM can control fuel delivery to the injectors by increasing the IPR duty cycle which increases fule pressure through the injector nozzels. PID: IPR (% of duty cycle), MFDES Mass Fuel Desired an internal PCM calculation based on load demand (MG)

Where did you get the injector o rings for ? or just regular o rings worked?

By the way the first truck came back that had the miss well its no longer missing it just simply acts like it runs out of fuel every 40 or 50 miles itll start dieseling you pull over for a min and let it idle and it runs normal again?? Changed the fuel pump and it still does it but only when its got a load on it? Scanned it again and got new codes this time p1211 and a p0603 what is a irp valve?

Injector O-rings from ford, $7-10/cylinder if I recall. Follow what weareweird69 stated on glow plugs, doing non motorcraft could cost you your engine.
My truck had bad IPR o-rings (buy at international, IPR rebuild kit) it would run bad when it was hot.
Also check your Fuel Pressue Regulator screen, Follow these istructions.
Fuel Regulator Screen Cleaning

The fix is simple. Take off the cover over the fuel filter, 1/2 socket does the job. Place a towel or shop rag under the fuel regulator!!!! There are two 10 mm bolts just to the right of the fuel filter, take both out making sure you put them back the way they came out. Gently pry the fuel regulator away from the fuel filter housing, making sure you don't drop the o-ring. You will see a small screen about 1/4 inch. Using a small screwdriver or q-tip w.out the cotton ball on the end, wipe the screen and then put everything back together. The material you get off the screen I have been told is from o-rings. The fix will only take 15 to 20 minutes. If you find the regulator is blocked, clean it, install new fuel filter, and it shouldn't need to be done again for 12 months.


Replace your black cover and you are ready for a test drive to see if you made any difference. You should definitely feel a difference in throttle response. You will actually have more boost pressure.

Ok guys thanks for all the help and i hope this topic helps someone else out

when they run into this issue. Ok the truck was acting like it was not getting

fuel well the fuel line up on the motor had cracked n broke o rings it was

sucking air and the tiny needle jet had trash in it so ford sells all new

replacment o rings just for all of that! Trucks running like a new truck!

Thanks Guys for all the help! If i can help anyone out with injectors i carry

most injectors in stock cheaper then the dealer, and i dont just have 7.3's i

can rebuild any injector and pop test and rebuild pumps,if anyone needs any

thing just let me know !!

Thanks Guys for all the suggestions........

the 7.3's have issues with the wiring harness's under the valve covers. it is probably one of them needing replacment


thats my bet, multiple codes for all things injector