[southern_style]

00 f250 7.3 will not start, cranks over fast, rpm moves just a hair,block heater was plugged in all night temp. gauge moved up so i know it is working, now if it sets a little while sometimes half a day then it will crank then after that its fine till you shut it off at night again. i got a new cps ordered, but not sure if thats the problem, im stumped, this is my first diesel

 

[NCHornet]

Please feel out your sig so we know what we are working on, also your location. Are you getting fuel? How do you know? What are your volts while cranking? Is the HPOP filled with oil before you crank? Do you have a WTS light? I don't have time to check this area often so you can PM me with the answers to these questions.

 

[southern_style]

sent u a PM

 

[jesilvas]

Tons of stuff you need to check first.
If you can scan it do so. Like NC said, see if it's getting fuel. See if the HPOP reservoir is full. I'm sure he'll point you in the right track.

 

[southern_style]

..

after it sets till about mid day when it warms up outside it will crank fine and run fine

 

[usnavyad]

waiting to see how this turns out

 

[southern_style]

its crazy, could it be the glo plugs? or gpr?

 

[usnavyad]

gprs only goign to raise temp not going to affect oil in the fuel

 

[jesilvas]

its crazy, could it be the glo plugs? or gpr?

Not unless we're talking around 20*F or so. And it would crank and crank and finally catch very roughly.

 

[southern_style]

my guage has stopped working all the time, sometimes it will work for a few min sometimes it wont work at all it will just have --- on it, could that be any of the problem? i know it is customizable but it was on the truck when i got it so i have no clue wat they ran it to

 

[southern_style]

...

this may sound stupid but what is the pyro? thats wat the guage that is --- is suposidly hooked up to??? i have replaces fuel filter, it was full of fuel, replaced cps,next ill replace glow plugs and gpr i guess

 

[southern_style]

Ok, i have replaced the GPR, the glow plugs,batteries,cps, still no start in even the slightest cold front 50 degrees or below even plugged in over night, but it will start later on in the day at the warmest time

 

[jesilvas]

Pyro: pyrometer. exhaust gas temps.
You replaced the fuel filter and it was full of fuel? Maybe I'm missing something.
It is some sensor. Have you scanned it?
Check all of your UVCHs and wires.

 

[southern_style]

had it scanned once and nothing popped up but the guy waited till mid day to run a scan on it and it runs fine after it warms up, the glow plug system is all new, new batteries, cps, when i changed the fuel filter it had quit a bit of fuel in it, a guy told me that it shoujld put out white smoke in the mornings when im cranking it over, i dont see any smoke, im stumped, is it something with the fuel? this only happens when the weather changes to cooler temps

 

[southern_style]

what should the fuel pressure be? im goin to check the pump on the frame

 

[southern_style]

for some reason i can unscrew the fuel filter lid and screw it back on letting it over flow and tighten it back town and it will crank, any sugestions?

 

[jesilvas]

Is it getting fuel to the bowl? As in you drain the bowl and with the bowl empty, you turn the key to on but don't start it, and the bowl should fill with fuel.

 

[southern_style]

Is it getting fuel to the bowl? As in you drain the bowl and with the bowl empty, you turn the key to on but don't start it, and the bowl should fill with fuel.

how full should the bowl be?

 

[jesilvas]

Well it'll fill up as long as the fuel pump runs.

 

[southern_style]

i ran some test on it tonight on the AE one test popped up some kind of exhaust pressure control valve range??