Engine/Transmission (1998.5 - 2002) Engine miss

[TGibbs]

With stock injectors the truck has a slight miss in one of the cylinders. With the new set of 110hp bd injectors, the miss increases threefold and makes the truck sound like crap. I pulled all the injectors and pressure tested each cylinder and each one is within spec. I also pulled all the breather tubes out and one o-ring was slightly cracked so I replaced all the seals and it didnt fix a thing.



So whats next?? I am completely lost now because not only is there a miss but power is lower than what is hould be, with stock injectors I can still see 1200 degrees and mileage is less than 14 mpg empty and lucky if I can get 10 loaded with just 5k or so. What should I check next? And any shops around Lodi, CA that are reputable that I could take it too?



Thanks all,

Tristan

 

[Graphic man]

try pulling your comp box and see if it goes away, did you check for codes?



Scott

 

[TGibbs]

No codes, pull the comp completely like a wiring?

 

[Graphic man]

it could be as simple and a lose wire on the back of the comp..... seen that before.



try just un-hooking everything and see if that helps... . comp, Map plug, etc. etc.



take a close look at the plug on the back of the comp, make sure all the wires are in tight





keep us posted on what you find



Scott

 

[TGibbs]

I will let you all know, I know the wire that goes to the fuel pump fell out so that is a big possibility there.



My RASP is leaking fuel out of the shaft with the belt on it so I can run it a little but hopefully I get it fixed with Stephen at DTT ASAP :{

 

[TGibbs]

Pulled all the wires and no difference and still no codes at all. What next??

 

[Graphic man]

i would pull the valve cover and see if you have a valve that is not closing all the way, maybe something got missed when you did the injectors.



Scott

 

[TGibbs]

I did check the clearances on all of them and they were within spec. Then the full compression check, three times on each cylinder. Wouldnt that catch a stuck valve? If not please tell me what to look for



Tgibbs

 

[Graphic man]

on the RASP make sure the belt is lose, 3'4 to 1" play side to side, that may fix your leak, or call DTT and they will send you a new up-dated seal,



who long has the miss been going on?



maybe check and clean all the electrical grounds,

 

[TGibbs]

RASP has a bad seal, new ones on the way. How the heck you get the old one out??



I will check the grounds tomorrow night when I put the RASP back together but what other grounds should I check beside the battery ones?



Tgibbs

 

[OPoole]

Sounds like VP-44. . i have a used Blue Chip pump here with less that 2,000 miles if you need it.

 

[TGibbs]

Now see thats what very odd about the whole deal. When I ordered the RASP, I installed a new injector pump from II. BUT, (always one of those :{ ) the truck did the same thing before. It got worse when I bought a set of stock injectors from Olee (nothing against you at all, its the truck not the injectors, had two 100 hp sets and 2 stock sets!) It misses really bad with the BD sticks in.



Is there a way to isolate this down to one cylinder? Also any shops in the Lodi area that is reputable?



Thanks All

Tristan

 

[TGibbs]

By the way Olee, that silver dodge in your signature runs wicked