Im back and its been a long while. My truck is cranking strong as ever but wont start. Updated: ffor anyone that remembers me. I have changed cps, ipr, tested hpop (4000 psi), new water pump and recently bought another computer. My truck just wont fire, not even on ether. I kno not to use it but im getting desperate to get the turd on the road by winter. I need help bad!

 

do you have a chip? if so might be worth removing and see if it cranks then. do you hear any relays under the hood clicking? thats the problem i have right now. are you getting any DTC's?

-cutts-

 

Isn't that a lot of psi from the hpop just cranking???

 

The hpop should have 3 to 5. New comp is bone stock. Gpr clicks over but no fire. Everything seems normal except it wont start

 

Ok, that's a start.....
#1) Charge the batteries....cause they run down quickly and no need to tax them...
#2) HPOP, a square or Hex looking plug is on the top...verify you have oil within 1/2" +/- of the top... extended cranking may lower the HPOP res. and will show up on your crankcase dipstick as a "over-serviced" at least it did with my thread / No start.
#3) Disconnect the ICP electrical plug, and try to start it with it disconnected, may see a "CEL" light illuminate on your dash...
#4) Check your Fuel pressure from the Schrader Valve ( tire stem) valve Fuel Bowl area) with a cheap tire gauge during a cranking session...you'll get a little wet with diesel, but focus on the gauge - as it will pulse- and "ballpark" a PSI during the cranking session.
#5) thats a start...other will chime in
#6) Smoke from the tail pipe when trying to start?
#7) I assume you have a WTS lamp, and NO CEL light illuminated?
#8) How many miles and how old the oil?

 

Hpop level is good. Wts lamp does come on. Oil is probably around 3 months old but has maybe 100 miles on the oil. Motor has around 110k on it.

 

i know you said you changed the cps but does your tach move when cranking?

-cutts-

 

Have you checked the maxifuse #22 (IIRC) underhood?

.

 

Yes tac moves. I checked them a few months ago I will check again when I get off work.

 

Did you try a working IDM. Mine did that about a month ago. Crank all day long no fire, replaced IDM fired right up.

 

How much was the idm? Iv already got around a grand under the hood from replacing crap

 

Mine was.a spare. EBay after core is $250 I believe

 

That's not to bad then. It was pouring yesterday so I didn't get a chance to check that maxi or test fuel pressure

 

New idm and still will not fire. I am running dry on this! Is there anything else that wouldn't let the injectors fire?

 

No smoke. Wts light comes on. Relays click over. Checked idm connection. Getting sick of dumping money into this truck