Im getting a code cyl #7 contribution/fault. Just replaced all new injectors on passenger side so could I got a bad Reman injector? Its like its flooding out lots of smoke. It cranks over then starts smoking and runs for about 1-2mins or intill you rev it up then it rolls the smoke out then stalls out. wait for a min or two then it will do the samething. (Fuel smoke).
I installed another injector harness on it also still the samething.
injector buzz test and no codes came up
the ipr stays 29-30%
The ficm_L_pwr 15.0
Ficm_V_pwr 15.5
Ficm_M_pwr 47.0-47.5
I need this thing going quick any help would be much appreciated!!! Thanks

 

If you have a IDS, shut off number 7 injector while running. Does the smoke go away? DONT keep running it with number 7 dumping fuel. YOU WILL MELT A PISTON. If you dont have a IDS, disconnect #7 injector harness. Good Luck

 

Ok thanks matt for the reply. I will try that this morning. thanks

 

How long ago did you replace injectors. Here is what happend to me.
Did the last 4 injectors, Went to start and it was leaking fuel from the xhaust manifold and lots of smoke. took it apart and the injector tip split in half. I think it was just a bad injector to begin with since there is no way to purge the air out of the system. Another macanic did tell me though it was due to air in the injector because I did not purge the system. Dont know, im confused. Anyway that could be an idea.

 

I tryed unplugging the #7 injector and it didnt smoke as much but still smoked some.
I cant figure it out starts up and runs fine for about a min. then its like someone turns the fuel off. Then it takes a long crank before it will start back up. let it set for a while and it will do the same unless you rev it up to about 2,000 rpm then it will shutdown as soon as you do it.
My battery light stays on intill it starts to shut down then it might go away.
The codes im getting is something about all 8 glowplug circuits.

 

How are you reading the codes?

 

yea i cant remember the codes and didnt have a pen i will post them tomarrow. just trying to describe what they were.
Im reading them with a Snap-On Modis.

 

Some of the info on the modis will be right, some not so much. Check the glow plugs with a ohm meter, and test the ficm with a volt meter. MAKE SURE THE 3 HARNESSES ARE PLUGGED INTO THE FICM COMPLETELY, AND PUSH ALL WIRES INTO THE PLUG FROM THE WIRE SIDE TOWARDS THE FICM. I had something very similar happen to me once. Truck started, picked up a miss and smoking, motor bouncing around. Thought WTF, and it was nothing more than a wire pulled back in one of the harnesses at the ficm. I took a needle nose and pulled every pin a little to make sure none got pushed into the harness, plugged everything in, and it was all better. GOOD LUCK

 

Ok I checked everything I can think of but it still wont run but for about 1 min or so. Then its hard to start after that sounds like it wants to star but wont. white smoke still come out of the tail pipe cranking it and running.
The fuel pump doesn't sound right to me though. Its like it sounds weak.
So I put the guage back on it and turned the key on and it took a few seconds for it to start to come up. It was jumpy as it was going up then finally reached 53 psi started it and it jumped anywhere from 52-53psi. and when I turned the key off it sounded like the pump was still running but gauge dropped to 0. unhooked the gauge and it sounded like there was a lot of air in the bowl and there was bubbles coming out also.
Is this normal oris it time for a new pump?

 

Air in the fuel bowl can also be combustion gasses flowing backwards (due to pressure) from a bad injector(s).

 

Isnt there a way to test that bismic? does the fuel pump seem like its not likely the problem?
Since im getting all eight glowplug codes could it be my glowplug relay?
It dont seem like I will ever get this truck going its been throwing everything at me.LOL

 

Heres what I have done so far replaced all injectors on passenger side and #8 on driver side.
Replaced orings on remaining 3 injectors
new injector wiring harness old one had some chaffing.
Replaced ficm with a good used one.
checked icp sensor
Replaced Glow plug control module (took care of my glowplug codes)
installed new fuel filters
getting good hpop pres. 700-750psi cranking
icp v 1.20
cmp good
ckt ?
with that only codes im getting now is #2,#4 injectors high circuit. Will that make it not run. Im thinking it wont.
Im getting 53psi fuel pres. running. but the HCFM doesnt sound like its really doing much you can barely hear it running. I think it should really be louder than it is.
The truck will still start up and seem to run pretty good for about 15 sec. then starts to black and white smoke really bad. Then i will shut off.
I also notice if I try to try to start it right back it wont. Cycle the key a few times and it will fire right up and do the same.
I know im going to have to replace the two injectors probally going to go ahead and replace all three than I will have all eight new.
What do you think about the HFCM bad or sound good?
Thanks

 

try a knowen good ficm. not a good used one. for that matter take your ficm and put it on a different truck and see what happens. check the ipr valve for a hole in the screen.

 

I checked the voltage at the pin under the cap and it tested 47.5 key on I went ahead and checked the soldering points as well. do you think the Fuel pump is getting weak cheezit. I thought they made a pretty good whinning noise when you turn the key on.

 

I think you have a fuel dumping past the injector o-rings causing the white smoke and such, then, the combustion gas is also getting back into the fuel system causing it to die. I would recheck your injector installation. All that white smoke and running bad and dying sounds like a bad injector copper.

When you rev it especially, then it dies, because of the combustion gas in the fuel system.

The contribution fault doesn't necessarily mean bad injector. This fault occurs when the cylinder is not contributing at a certain percentage that all the others are. This is probably because it is getting over fueled. I'd check #7 injector installation.

EDIT: Also, on a new injector installation, you should make sure the injectors get purged of all the air before revving the engine up. The air in the fuel system creates a timing change hydraulically. This causes the injector internal parts to slam open and closed unexpectedly when the air is finally purged out under higher internal injector pressures (higher engine revs). So when a new injector is installed, it can be ruined if revving the engine is performed with air in the fuel system. Let it stand at low idle and purge the air out itself.