Engine/Transmission (1998.5 - 2002) Injector troubles ????"

[KGrotte]

I was getting the VP44 code and the dead pedal. I was running a HRVP44 so i replaced it. I am running Mach 7 injectors. I had a slight gurgle when rapidly steeping on the throttle. Thought it had to due with the vp44. The gurgle is worse with the new pump. If i accelerate slowly it is fine. but hammer it fast and it hessitates and spits a little. Going to talk to the injector guys tomorrow. ANY IDEAS ????

 

[DIESELWRKS]

more info on your truck, and is it throwing new codes with new pump. did you go with a new vp-44 ho, so, sho, or monster. also how new is the pump. how many miles have you put on it. are you sure you fuel pressure to the pump is good. what are you seeing for psi

 

[KGrotte]

I have put about 40 miles on the truck with the new HRVP44. No i am not getting any codes. The 44 is being feed with a fass 150 (15psi constant). As far as info on the truck. Ported & Polished, O-ringed head, Helix cam, 90Lbs valve springs, SilverBullet 66, Many more but notheing that should affect this issue. I talked with the guys i got the injectors from just to see if i could have them tested locally. and there is nothing special about them but the nozzles. but i was trying to find a simple solution i guess i just dont want to be running this thing with a bad injector and cause more issues

 

[Bob Cochran]

Are you using a Smarty, Qaud Adrenaline, etc? Could you be having a fuel timing issue with the new pump? Right key for the pump or not seated properly? Just throwing out a thought for what it is worth.

I have put about 40 miles on the truck with the new HRVP44. No i am not getting any codes. The 44 is being feed with a fass 150 (15psi constant). As far as info on the truck. Ported & Polished, O-ringed head, Helix cam, 90Lbs valve springs, SilverBullet 66, Many more but notheing that should affect this issue. I talked with the guys i got the injectors from just to see if i could have them tested locally. and there is nothing special about them but the nozzles. but i was trying to find a simple solution i guess i just dont want to be running this thing with a bad injector and cause more issues

 

[DIESELWRKS]

good point if you have any other timing boxes turn them off and see if you can feel a differance. I had something of the same in the past when I attempted to use my fass with a universal spin on filter up stream from the fass. found out i showed good pressure but It was creating almost to much pull and the filter would not flow right off and on. causing hard start and a gurgle when I attempted to drive if I was light on the foot it would smooth out. but if I punched it the truck would basical cause fuel line vapor lock with air. ? removed it kept the factory and just the fass pump and check all my fuel lines and all was fine. when do you get your injectors popped and tested?

 

[KGrotte]

I am running a comp edge box but it is not hooked up due to voiding the warranty on the new pump. Now that you say the fuel issue. I replaced the fass filter with a cross from wix when i changed the pump. I was also running the same number filter before i changed the pump and it had a little gurgle then too. I think i am going to try some genuine filters before i pull the injectors. The only problem is have to order them off line so its gonna be a few days no one around here sells performance products. I guess i was thinking if there was a problem with the filters i would see it in the PSI... . Helped support marines in a attack in faluja,Iraq in 05... ... ND National Guard "trailblazers"

 

[DIESELWRKS]

you may want to call fass on the filters that they would recommend to cross use. I think the problem I had was the filter brand was fine but the micron rating was to tight. I saw fine PSI at idle but when the truck was under load or heavy load/fuel, my psi would drop and take longer to recover. this was causing almost a cavitation strain. if it was really bad the truck would die and would have to crack injectors and bleed them. are you tied into the stock fuel filter at all. that is all I use anymore, and the fass pump 150

 

[KGrotte]

Nope no stock filter. The vp44 is feed directly from the fass. I am having doubts about the filters being the issue but it doesnt hurt to try. Ill have the filters next week. thanks for the help...

 

[RAJohnson]

Did your new filter help?

 

[KGrotte]

I changed the filters and it seems to run better but it still does not run like it used to so i changed the cam sensor. Still no dice, it seems to idle just fine and slowly acclerates just fine but still gurgles when i get into it. Just doesnt sound like it used to. i dont have a heated shop any more. just my work on weekends so mayby this weekend i will pull the injectors. i dont drive the truck cuz i am scared it has a injector that is not poping right and i dont want to take out a piston. Thanks for checkin back... .

 

[RAJohnson]

Keep us posted after you pull the injectors. Mach 7's seam pretty big, put that is just my opinion.

 

[KGrotte]

7's are big but worked great with the twins i used to have and they work ok with the single. I pulled the injectors today and the injectors are pretty dirty but 5 of them look fine one of them does not look like it was seated all the way it has carbon all the way up to the feed hole on the injector. i am not possitive exactly why the injector is covered in carbon any suggestions would be helpfull

 

[KGrotte]

injector

Injector on the left is the one in question. Injector on the right is one of the 5 that seem fine. Next one down is pic. of the sealing ring of the Injector in question and the one that seems fine

 

[RAJohnson]

Looks like you might have had a dirty hole and or a bad sealing ring You might want to replace the injector or at least get it checked out and pop tested.

 

[Vaughn MacKenzie]

Yep I would agree with Rob there was probably some crud on the seating surface in the injector hole, make sure it's good and clean (inspect with a mirror) before putting the injector back in. . . and use new copper sealing gaskets.

 

[KGrotte]

oookkk I had the injectors tested and they all poped good. cleaned all the holes and installed new washers. Damn thing still has a miss. So i pulled the codes and i have 0622, One list i have says generator field and the other says engine miss detected. 1765 which i think has to do with the dtt trans. and 1693 which i think has to do with the silverbullet and the boost fooler. I was just credited my core charge for my vp44 so i think i am gona call and see if i can just get the old one rebuilt. i didnt seem to have problems with the old pump it had a dead pedal and sputtered a little at idle but smoothed out with a load but i shure didnt have the miss i do now. Its not like the miss it terible but i can definatly notice it. ... . Sometime i just want to get a complete stock 5. 9 and drop it in and make life simple...

 

[KGrotte]

Anyone have any info on how the fuel lines go in order on the pump to cylinder#. This is not my first rodeo and i dont think there is anyway i could have messed up the fuel lines. But i am up for anything at this point.

 

[RAJohnson]

When you removed your injector lines for the Pump swap, did you take them off in sets of three or singly. Off the top of my head I cant remember the order. But if they were taken off in groups of three it should be self explanatory. If not do a search on you tube for VP44 removal and you should come up with the correct order. If no one else chimes in I will look at mine tomorrow and let you know. Hard to believe there wrong thou, if its running and only missing at certain stages.





P0622 Alternator Field Improper Switching

 

[CAPTPHIL]

You can`t get all 6 to hook up at the same time if one is wrong
, they are hard enough to hook up in the right order. Was your new VP done at a Bosch shop ?.
Good Luck Capt Phil

 

[jkidd]

Injector on the left is the one in question. Injector on the right is one of the 5 that seem fine. Next one down is pic. of the sealing ring of the Injector in question and the one that seems fine

Where is the copper crush washer????