IP saga continues...
Elder User
Joined: Dec 2006
Posts: 559
Likes: 4
From: On a farm.
CheaperJeeper: I don't disagree with you but you forgot to quote the "manually controlled" part of my first post, but then I also should have been more specific: If a guy was going to run an electric full-time, as you suggest, it would be best to remove the mechanical pump and put a plate over the hole. I leave my electric off until I need it... these days only for fuel filter changes. I installed it, to have a backup in case the mechanical failed (which mine did a couple of times and most inconveniently). Of course, I haven't had another mechnical pump fail since...
Thread Starter
|
Freshman User
Joined: Jul 2006
Posts: 41
Likes: 0
I don't know if this warrants a new thread but here's the latest:
I got fuel line #4 replaced along with a new injector. What's happening now is that it is still having a difficult time firing. Sometimes it will eventually fire and sometimes it won't. (I'm going to need a new starter once this project is finished.) Starting fluid has been my best friend with this truck. Once it is running there's a lot of smoke(mostly white), much more than it should. I know I need to get the IP dynamically timed, but what about the lack of firing? Bad glow plugs? Let's hear it!
I got fuel line #4 replaced along with a new injector. What's happening now is that it is still having a difficult time firing. Sometimes it will eventually fire and sometimes it won't. (I'm going to need a new starter once this project is finished.) Starting fluid has been my best friend with this truck. Once it is running there's a lot of smoke(mostly white), much more than it should. I know I need to get the IP dynamically timed, but what about the lack of firing? Bad glow plugs? Let's hear it!
Posting Guru
Joined: Oct 2005
Posts: 1,030
Likes: 0
From: Powell River B.C.
White smoke is unburned fuel, I'd try advancing that IP to the passangers side a full scribe line at least, and see if that cures your problems. I have mine set up so that with cold advance on I have a definate powerstroke rattle when you start out driving, then, when the cold advance cuts out, the ignition rattle is gone. Also I just looked at your original post, and noticed you only changed two injectors, Normally they are cheap enough to just do all eight, that way your pop off pressures should be more or less the same on all eight. Your old injectors may be firing off way to early as they have lower pop pressures due to tip wear, also old tips do not pop, rather just spray fuel, so if you put a new IP behind them, they just way over fuel = white smoke. At least pull all the injectors and have them tested.FWIW
Good luck.
Good luck.
Posting Guru
Joined: Oct 2005
Posts: 1,030
Likes: 0
From: Powell River B.C.
Check out some of the other threads re injector pop pressure specifications, pop off pressure has a lot to do with actual timing. At least have yours tested- that will tell a big story. I pulled mine at 240K km many were dripping, one actually tested good, the rest sprayed fuel at 1300-1400 psi rather than poping at 1850 +/-. E- code in my 93 are suppose to pop at 1950-2050 psi. Best money I ever spent on any tune up was a set of rebulit injectors. If yours are doing the same with the new IP they are opening to early ie too advanced timing. So disregard my post re advancing the timing. When I replace my IP with a rebuilt, the timing marks at the 12 oclock position ended up being bang on.
Last edited by KJLYPW; Mar 14, 2007 at 10:29 PM.
Thread
Thread Starter
Forum
Replies
Last Post
LSO1123
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
50
Aug 6, 2011 11:29 PM
tabascom16
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
May 30, 2009 10:10 PM
