ok guys I have a 1996 F350 that cranks but no start no fuel smoke
this is a list of things I have done I have checked all fuses and they are all good the oil level is right on the money and the tach is moving will cranking I checked the hpop with a gage in line hooked to the head I have 3600 psi of oil wile cranking I checked the fuel pressure and it is 45psi I pulled the return fuel line off the head and cranked it over the fuel flowed out of the head it will fire off of starting fluid but will not stay running I hooked up a snap on scanner to it.wile cranking I have 154 rpm my ICP is 3640 the ipr is 55% my fuel PW goes up to 4.04 and then drops back to 1.? IT has passed the buz test 6 times in a row there is no codes at all. any ides

 

Does the tach move while you're cranking? Did you check all the fuses in the main underhood box?

 

First check for presence of RPM signal (per suggestion above). Also, did you hear the glow plug relay click (or run a separate glow plug check ?)..

Then, If that Fuel PW is dropping (e.g. at/near 1ms or lower --.6ms) this is a "no fueling pulse" meaning a sync pulse has not been transmitted to the computer from the CMP or it is inconsistent

Was that buzz fairly consistent or "equal" across the injectors?

Early indications: PCM, CID, or IDM could be faulty


Also, I would not use ether either.........very bad

 

yes as stated above all fusses are good and the tach is moving wile cranking yes the glow plugs work and yes all in the injectors were equal across the board .
the fuel PW ramped up to 4.04 and then dropped to 1.somthing (I don't remember and I didn't right it down ) what is the cid

 

CID is cylinder identification............input used by the IDM to provide current to the correct injector

 

ok how do i test this and where is it loacated

 

If the glow plug relay is disconnected and a shot of either is given. It will hurt NOTHING.

Also, you should be seeing a hell of a lot more RPM than 154. No less than 500. Which tells me CPS

 

If it's not the CPS than it might be the high pressure fuel regulator. It's on the driver side of the hpop. We've had to replace the orings on them in two if our 1996 7.3's. I'm pretty sure you have to buy the whole thing and not just the orings

 

I would think if it was the o rings I would have low oil psi not 3,640 psi of oil pressure an I wrong on this thought. and yes I did disconnect the glow plugs when I shot it with either It close to 100 deg f here right now so I know I can rule out the glow plugs being the problem

 

for some reason the fuel is just not getting into the combustion chamber there is no smoke at all

 

A question wasn't directly addressed worth repeating,

 

ok again YES YES YES the tach is moving wile it is cranking Sorry I guess i did not make that clear

 

one other thing i might add that i did not earlyer is the cps is new it was the frist thing i checked. but if the cps is bad how would the scanner see anr rpm at all

 

That it is reading the WRONG RPM. You should have at least 500rpm turning it over with the starter, NOT the 100 or so you are seeing. And you are truly only getting 100 RPM with the starter, it is NOT spinning fast enough to start

 

OK thanks brad I will check that out and make sure the cps is seated in the hole compleatly It is spinning over just as fast as it always has so i will look in to this