truck hard starting new glow plugs, gpr, and starter

[nathan]

my 01 is hard starting i just replaced the glow plug relay, the glow plugs, the starter, and had the battery checked out.
it will cranks and try to start just won't fire over
puffs white for alittle. and "surges" when warming up.
Im lost what do i look at next?
thanks

 

[nathan]

my 01 is hard starting i just replaced the glow plug relay, the glow plugs, the starter, and had the battery checked out.
it will cranks and try to start just won't fire over
puffs white for alittle. and "surges" when warming up.
Im lost what do i look at next?
thanks

 

[stroker2]

Injectors? I know with my stock injectors with 145k on them it was a hard time getting the truck going at 15*. Had to try a few times and it would be missing. I put new injectors in it atnd at 5* it would fire right up and run on all cylinders

 

[PsRumors]

My dad spent hundreds have his GPR, plugs and harness replaced only to have the same problem as you. All new ford parts. Turned out to be the GPR again. Check to make sure you are getting power to and across the GPR.

 

[golfer]

this document may shed some light.

http://www.swampsdiesel.com/files/7.3LInjectorDiagnostic.pdf

 

[nathan]

thanks guys ill check the relay if its the relay ill be pod at least i bought the one with life time warranty

 

[nathan]

how do i test injectors? i hope its not.

 

[Arisley]

Merged both threads into one.

 

[stroker2]

Merged both threads into one.

I was wondering what was going on and how posts snuck in before my post LOL


X2 for checking the relay. Buddy replaced his non-working relay just to put on a brand new relay that also didnt work so that could still be a possible problem for you

 

[TARM]

We are already back into having freezing temps and gp system start issues... Seems like it was just summer.

One way to rule out the glow plug system is to plug it in and see if the issue goes away. If it does then it COULD be the GP related.

My has the damn Glow Plug Control Module instead of a cheap standard relay. The only benefit for the $200 item that I can tell is it reports what glow plug has failed so you are not stuck OHM things out or swapping all of them out. Not worth the cost but then neither is swapping in a non-GPM harness and PCM. Issue is when I have one go out I usually replace all of them at the very least on that bank.

 

[JLDickmon]

Do you know how to do a voltage drop test?
If so, that's how I would check the circuit.

If it's whipping over and blowing white smoke, and not lighting off, that's certainly where I'd start..

 

[littleredstroker]

Mine wouldnt start without being plugged in when it was 65 degrees. 3 bad injectors. It would dump black smoke even.at -20 so I didn't figure it was go issue. I'm sure someone will correct me if I'm wrong but if your having glow plug problems it should be dumping raw fuek, lotsa white when cranking. If its no smoke at all or black, like mine , I would start to think about other issues.

autocorrected by taptalk

 

[DEEZUZ]

if its cranking and hitting, white smoke, and glow plugs and ICP is fine, along with fuel PSI, your most likely looking at injectors... When I finally get it to fire I hold it to WOT, if it hesitates at any rpm range, than shoots to redline I replace injectors...

 

[nathan]

Thanks guys. it must be my investors. it will smoke whit for a min or two once started but if its plunged in it will fire right up. Where should i look for good injectors? what should i run? I want performance but don't want to lose fuel economy.
thanks again

 

[stroker2]

I would double check everything (glow plugs, relay, make sure its not just turning over slow) then i would look for injectors. Given what you are looking for and whatever mods you have, i would do stage 1's. Better mileage that way, simple chip reburn which is usually free with injectors from most vendor i believe and will run good with a stock turbo, tranny, and fuel system.

 

[nathan]

Ok thanks. my truck is pretty much stock. the guy before me built the transition up but Idk how much i can trust him. it does for sure have a.fined trans pan on it tho. i plan on running a 4inch turbo back once i figure out why its a pita to start.
ik its not turning over slow i put i highoutput starter from db electric in it.
thanks for the advice

 

[TARM]

For injectors I would call the following three and talk with each and then make a decision:

Nate @ Unlimited Diesel
Dave @ Swamps Diesel
Cass @ Full Force Diesel


Personally I think I would see what you could get a 30% Hybrid for. Your stock HPOP that is likely getting tired would get a huge boost from it. As far as I can figure it would be like having a A code 30% nozzle running with a performance HPOP such as a Adrenaline or T500.

This could save you from having to worry about a HPOP upgrade in the future.

Add to that a manual WG controller as even a chipped stock injectors is enough to send boost into the turbo explosion range. Turbomaster set to open around 25 psi.

That would be a nice peppy setup that would not need added fuel or hpop to get the most out of it.

 

[nathan]

Ok i have a chip with a 6 poss switch just not installed yet because do not know the tunes that are on it and the price was right.

 

[TARM]

My suggestion would be to give Matt@ gearhead and call and talk over tunes. No way after seeing some of the timing plots of old tunes I would run tunes no matter how they felt when run.