[Ram'n It]

Well, the first thing you need to do is get some guages. Second thing is the stock fuel pump isn't going to get enough fuel to those injectors. The edge will make your truck smoke very well if your getting enough fuel. Mine did. You sould be smoking very well when you get on it. If not, then I would do a fuel pressure test. You probably need a fuel pump, IE.. Fass, or Air Dog.

 

[THE STIG]

A couple problems here that I would like to point out.



NEVER EVER EVER buy something used just going by the word of mouth that what your buying is ok. If your buying something used... especially injectors and you dont know alot about them, do some research about them and send them back to the manufacturer to get tested!!!!! Unknowing to the previous owner there could be problems with the tips and he or you dont know about it and you just set yourself up for a motor failure


The common rail injector is a delicate piece of work. If your truck is an 03 or early 04 you need a nozzle ending with the number 1058. (8 hole tips)1058’s fit any common rail that does not have a 600 or a 610 rating for torque. You will find that rating on the drivers side of the black plastic valve cover. If your truck is a late 04-07 any nozzle ending with 1309 or 1659 will work. (5 hole tips) 04-07 will be rated @ 600 or 610ft lbs. The spray angle is different between 03-04, 04.5-07. Putting the wrong or damaged injectors in will lead to engine failure. Gaurenteed. You can take my personal experiance on that or find User OnTheRocks, he put the wrong nozzles in his and melted it down.


Now ive read that some companys like ddp updated to a 5hole tip for the early 04's and they didnt run that great, some ran fine.. either way I would have sent those tips off to get cleaned and inspected.

 

[THE STIG]

and finally, gauges.. rail pressure is in question here. I know some guys can run nozzles on a stock cp3's, some cant. Thats the glory of the commonrail. What works for guy A might not be the same for guy B. Condition and wear/tear play a big role.

Either way if you find rail pressure running a bit low, that could explain the laggyness or the problem could lay in the factory lift pump. Easiest way to test the lift pump would be to 'T' in a mechanical fuel pressure gauge between the lift pump and cp3. When running at WOT the pressure shouldnt drop significantly, especially to zero.

 

[TURBOcumin]

Yea i did know about the 1058 nozzles. I did make sure that they ended in 1058. I didnt know you could send them back to be checked....? Trust me i would have done that! I know every truck is different, but i didnt read any one that had problems with a stock lift pump and 50hp nozzles? Would it make it worse that i have the ez edge in with them?? I think the ez edge in my years just raises the rail psi?? and no timing??
any one have any pic of the t in line for the fuel gauge or any links with more info??

 

[THE STIG]

Yea i did know about the 1058 nozzles. I did make sure that they ended in 1058. I didnt know you could send them back to be checked....? Trust me i would have done that! I know every truck is different, but i didnt read any one that had problems with a stock lift pump and 50hp nozzles? Would it make it worse that i have the ez edge in with them?? I think the ez edge in my years just raises the rail psi?? and no timing??
any one have any pic of the t in line for the fuel gauge or any links with more info??

Ez raises pressure, tax's the cp3 for more fuel wich in return places more demand on the lift pump. Its a chain reaction.

The 'T' for a fuel pressure gauge is simple. Just remove a section of line, cut it and place a T inline, using banjo fittings and rubber fuel line to re attach the line. Make sure the rubber line is rated for 30+ psi and you'll have no problems. Off of the 'T' tie in the fuel pressure sensor and run the wires up to a gauge. Thats for a perminent install. you could always run something different for a more temporary fix if you feel the need.

and finally, yes you can send the nozzles in to get checked for cracks, scars ect ect. They are bench tested for flow and inspected for damage. At operating pressures of up to 26,500 psi there isnt much room for error with the nozzles. 4 of mine bench tested bad for scratches I could barely see where the fuel had washed the needle for some reason

 

[TURBOcumin]

WOW if the psi looks ok they are coming out asap!!

 

[THE STIG]

Its just cheap insurance to pull them and have them checked especially if your mechanically inclined. Its 3 hours of your time and just get ahold of dynomite and send em in. I'd hate to see another user follow OnTheRocks or my footsteps and burn a motor down :doh:

 

[TURBOcumin]

what about the fuel in the head by the transfer tubes???

 

[TURBOcumin]

also what about the banjo bolt the is on the feed line that bolts up to the high psi pump. I see some people are buying a new banjo bolt that has a hole drilled and taped in to it. can i do this to mine? then i can hook up my gauge and drive it around with it on. or is that a special bolt they use???

 

[TURBOcumin]

Ok.. tested the lift pump psi... It was at about 6 at idle, and just loading it in gear not moving it would go down to about 5 maybe 4.... I guess that means the lift pump is bad.. Y did the truck run fine before I put the 50 hp nozzles in, and now it is bad (it felt slower the first time out of the shop not a few miles or days later)????? And any one have any idea about the transfer tubes??

Thanks for the help!!!

 

[pullinhard]

you had stock tips before, now you have bigger tips, and the fuel demand is larger, your lift pump is weak, and you didn't notice it with stock tips. you are now seeing that its weak. i would be willing to bet thah your CP3 pump will be next with the mileage you have. it never ends realy, 1 thing leads to other thing, and your wallet will empty, but its so much fun!!!

 

[Ram'n It]

From what I understand, get a fass 150 or air dog 150 and a Arson 3 kit from wicked diesel and have your injectors checked. Then you can do what ever and know that your pump will give you all the fuel you will need. I'm doing a fass 95/150, Arson 3, and 90hp injectors in that order, just so I don't go through what your going through. Just like pullinhard said, 1 thing leads to another. But before you squirt more fuel, you have to make sure your getting enough first.