Just did jammer nozzles, stage 5, today.

Did not replace the washers, i shouldve read up about that ahead of time. They all looked good and aprox the same thickness each.

The injectors seated all the way down, the tubes "popped" right into the injectors, and bled all the lines a couple times..

But its still idling a little rough.. and accelleration shakes the beejeebees out of the truck.

Is theres anything obvious that does this, or just one or more injectors not sealed good?

Oil level is not going up, so not getting diesel in oil.

Im going to drive it for a day or two, maybe the whole week then next weekend do em again.. with new washers, the right way.

 

Yes its a good idea to repace washer, but I doubt thats your problem. You have a fuel leak? Check your adjuster nuts and see if any fuel coming of the adjuster nut near the firewall. You could pull the injectors and have them tested to see if they flow the same. Good luck.

 

By adjuster nut are you referring to the part that holds the injector lines to the feed tubes?
All of them are nice and tight.. I paid special attention to #6 seeing how its a PITA to reach it.. had to take off the engine lift bracket to get back to it to rebleed it, gets pretty hot after a few minutes.

If not referring to those, im not sure what others youre mentioning as none others were touched.

If I pull them out to do anything besides washers, im going to replace them with nicer injectors all together.. I shoulda read posts about the jammers and it seems like theres bunches of posts like these.

Then again, it could just be the nut behind the wrench.

 

Okay the washers are not the "immediate" problem.. There is a leak somewhere.. lost its prime overnight.. took a good 8 seconds of cranking to fire up.

If not the nuts that hold the lines to the feed tubes, then the injector nozzles themselves are not seated in the injector housing properly?

Were there any seals in there that i could be missing?

 

i did mine feww weeks back there are no seals u missed. The tip only goes together one way because of the pins and wholes in them. Either one of your lines is sucking air or mabey a crossover tube has a problem. i Think there is an o ring on the crosstube but not shure.

 

Yes the crossover tubes have a rubber oring on them.. those looked in very good condition.. All the tubes made a click/pop sound when i pushed them into the injectors.. didnt need any real force so I thought they were lined up pretty good.. just pushed with my finger and it snapped and put the nuts back on.

Tonight Ill try reseating crossover tube for #6, all the time spent moving the nut back and fourth the tube may have came out a bit..

 

Actually one other question that popped up that i didnt see answered anywhere in anyones threads..

What order do people install the injectors/crossover tubes.

do you seat the injectors, bolt them down, then put the crossover tube in?

Or do you seat the injector, insert the crossover tube, then bolt down the injector?

I dont know if perhaps that makes a slight difference, but i seated the injector, put the tube in, then bolted down.

 

at school they told us to seet the injector and back it off then put the tube in, tighten up the line nut finger tight and then pun the caps down to tq specs then tighten the nut

i'd be willin to bet, that it's the seal on tube #6 i messed the seal up puttin it in, and didnt know it untill i had the rough idle, check the fuel system, from the steel line on the frame rail through the LP, and fuel filter, then into the vp, ecp the rubber lines, these dry rot and crack.

and i wasn't at all impressed with my stage 4 jammers, i ran em fer about a week and pulled em, they just made a lot of smoke, and not much more power, i put in a custom set of 75hp in and i have about the same power(2# less boost) and a little smoke.

 

Ill say they make a ton of smoke, its acutally annoying. I havent been on a dyno yet but id have to say mine made the comp feel like nothin. I drive around on setting 1 and it hauls a$$. But ill have to say it idles smoother quieter and pick up 2mpg. It take about an 1/8 of an inch throtle to drive anymore.

 

Well #6 was messed up.. and its my fault

I just recalled thats the only one i did not pull the tube out to pull the injector.. Dont know why.. but for some reason i remember putting the injector back in and going "ok wheres that tube? oh crud its still in the hole!".

Turns out the feed tube on #6 has a slight indednt on the surface where it meets the injector. Probably due to pulling the injector up with the tube in it. Ill have to get another core injector as a spare also in case the injector hole has some damage.

Im sure at 4000+ psi, that slight indent is causing the problem.

Just for fun (and ease of replacement later), i swapped tubes with #1.. Considering #1 can be tightened easier/more than #6..

Turns out after doing so, the truck runs better. Still misses, but not a horrific truck is shaking apart rattle like it was before.. just an annoying rough idle and some shaky accelleration..

So.. wheres a good place to buy injector tubes and the orings for them?

 

I would just try the o-ring first and see what happens. I have a few set lay around here, but that doesn't help you. You could also try rotating the tube and see what happens. Heck it could seat for you. I've nicked a couple connector tube, but I still have a decent seal. I wonder if pop-off pressure has anything to do with it, cause I run a big injector that the pop off pressure is lower than a small sticks??

 

Just finished it up tonight.

Turns out that feed tube was the culprit. It had an indent on the tip just barely visible, but considering its suppose to hold over 4000 psi it wasnt up to the task. Lesson learned: Pull tubes out before injectors. Injectors can come out, but will force the tube out, possibly damaging it. I replaced that slightly indented one first and fired it up and it idled smoother and revved hesitation free.

I went ahead and replaced all of them as well.. putting the new ones next to the old ones, you can tell that the old ones do also degrade/wear off with time. The new tubes tips were a tiny bit wider.

All said and done, truck runs great now.

Gotta get me a new intercooler next