well i am new to this cr stuff so i don't have any of thr tools for it yet . i may need to before i am done this truck ,,,,

 

i would say it has 10 psi by the amount it shoots out and the amount that is on my floor , well i know there is no pressure at the rail as i rolled the truck over lets say 100 full turns and then i cracked the line and no pressure at the rail (none) i thoguht i should shoot out so i put a face sheild on and everything i see if i can get a gauge that will meassure like 30,000psi not sure were i will find that , is there a way i can check the fca if i pull it out ? i did have to put a used one because the guy that rebuilt the engine broke it off ,,,,,

 

Im not 100% sure, but read on here somewhere, it the fca rattles its okay, have to take it off. Never had an issue with one, so not really sure. Me thinks its around 5000psi to 7000psi to start, but dont quote me on that number as wrote in stone.

 

ok i will look around and see what the word is on here about it ,

 

try taking off the fuel control acuator (fca) from the pump has 3 torx bolts be carful not to strip them. if the truck went a while without starting it can get stuck and not let the common rail get pressure. Shake it to see if you can hear it like a little ball loose if you can its likley to be good hopefully its just that. If not check the return line loosen it up and crank it you shouldnt have any coming out if you do its a pressure relief vavle prolly. Good luck im going through the same problems.

 

ok thanks i will try that

 

wink when i did my motor i was warned that if you dont properly seat the crossover tubes you can get problems like this. Say the guy torqued the injectors before the crossover tubers, they wont neccesarily seal and it will give you a fuel leak in the head, bleeding off pressure. Causes stuff like hard starts, no starts and misses, depending on how bad it leaks. Id be pretty tempted to back off the injectors and connector tubes, pop them all out (at least the crossover tubes) and check the sealing surfaces. only takes an hour to do and its free. Hopefully that helps you out.

 

ya i was thinking that , i am going to try that later today after supper .thanks

 

i also found that the the fuel return from the cp is flowing out when trying to start so i am going to see if i can found someone that has oa fca i can use to try ,,,,i will do that and seeif that fixes the problem ....

 

Did you have the injectors out? tubes? for the engine swap. Abit puzzled, usually if there not seated right the 1st time engine wont start. But like said, its free to pull the tubes & inspect the ends of them. Also there shold be no fuel in the return of the pressure relief valve on the rail.

 

thats true there. if theres fuel comeing out the rail relief theres a problem. you should never hit rail relief pressure. if its relieving because the valve is stuck open or weak, you're not building good pressure in the rail. and it if is actually building enough pressure in the rail to open the relief. might be an issue with the FCA on the pump. sending it to full stroke. all the time.

 

i have fuel return on the cp not the rail , i don't think i should just cranking it over , i have almost no pressure at the rail,

 

Sounds like FCA is not getting told to do anything or its actually not doing anything. Or the rail relief is dumping all the rail pressure. If you had a leaky injector tube you would likely have rail pressure and it would probably eventually run unless it was a really big leak I guess. But it is very important to get the tubes properly seated.

How do you know it has no rail pressure? I am not exactly sure how the system bleeds it's self down but I have cracked the fuel line shortly after running expecting alot of pressure but there was none. I wonder if you couldnt just put your multi meter in line with the rail pressure gauge I think its just sends out 0-5V I seen the corresponding pressure values some where here. I cant remember what the pressure is when cranking over but 5000-7000 is at idle.

 

when your cranking the truck over with the return valve om the rail out very little pressure coomes out ,,,, and i don't think the cp should dump all the fuel to return when rolling over , and it is not the one out of the truck , that one got broken when the rebuilder was doing something ....

 

I forgot to mention in my last post, when i did my engine i had a couple of those ecm intermittent power fault codes, I think its just from disconnecting the wires to it is all.