I just put a set of rebuilt injectors in my 96 f-250 crew cab short bed 7.3 motor I have no experiance with 7.3 or any other diesel motor but I have messed with gas all my life.Any way I bought this truck as I have always wanted this body style so in ran bad ,hard to start first I put new gp in changed oil filter, put new gp relay in new fuel filter and it ran bettet but it smoked white when started so I asked around and learned it was injectors so I put a set of rebuilt in and did not purge anything, but it did try to start it and it turned a little and stoped so I pulled gp and purged put back together , tryed to start ran battery down charged overnight this morning it started after about 3-4 tries and now it smokes like crazy and does seem to run better but it seems to still be missing, I ran for about 1 hour but it is still smokeing? what did I screw up is the real question? any help would be great.
Thanks, Jack S

 

sounds like ya still have air in the lines somewhere. im not real fimilar with the powerstokes but sounds like a possibility

 

As long as O'rings were installed in the right place and copper washers on the bottum of the injectors were installed..... correctly...... Then I have seen them smoke for quite a while before burning all the oil out of the cylinders..... Did ya drive it or just let it idle for this Hour.... also how much oil in the intake....... Just a fefw suggestions

 

I have not driven it it is somewhat apart, no bed,no hood 1 fender off, I dont understant oil in intake? the injectors came with the o-rings in place new copper washer,I also installed new gaskets/wire harness on each side. Should I let it run more or should I take it apart and start over. Not sure what to think. Thanks

---AutoMerged DoublePost---

I went ahead and started it up pulled out side and have it running at 1000rpm (hope the folks next door dont mind)and it is still smoking but it does start better than it did but it is still missing on 1 or 2 cyl not shure what to think? any thoughts? Jack S

 

It can take quite awhile to purge the two back injectors and to burn out all the oil in the cylinders after injector replacement.. Especially if ya can't drive it.. Harder to get engine temp...... to help burn oil out of cylinders........ As for oil in intake if turbo is letting oil out it will be heavy in the intake..........

 

to DB.

 

I like this site thanks for the help out there, I'm lost without sparkplugs it seems like these things are missing some parts, . Jack S

---AutoMerged DoublePost---

Will this motor have a miss because of oil in cyl or is there another issue?

 

First, I would go to dieselmann's page then down to the powerstroke page for a little light reading. Then, while idling, I would try to bleed the air out of the oil rails by cracking open the injection control pressure (icp) sensor at the front of the driver's side oil rail, then the plug on the passenger's side front.

I suppose you could unplug each injector at the injector to find a bad miss. I've never done this myself and am unsure if there is any reason not to do it. hopefully somebody with more experience will give us the thumbs up or thumbs down on this idea (and tell us why). Keep in mind that the injectors have HIGH voltage.

 

You need to get out and run the motor hard for a bit to get the air out of the HPO rails... Iding will not do this.

No need to crack open anything.

Is it smoking white or blue or black or what?

 

Well the smoke is not white anymore it's dark black-blue and it still misses I do think it runs better than it did but still not as it should. I have done a few hotlaps up and down the street but it's somewhat torn apart so i'm not sure jonny law would look fondly upon me if you know what I mean I could say my wife was chaseing me with a golf club but im not sure that would fly will this oil/air in the motor hurt anything and or make it miss? Thanks Jack S