Rough idling 03 model 7.3
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Freshman User
Joined: Aug 2004
Posts: 27
Likes: 0
Rough idling 03 model 7.3
I have an 03 model stroke and it idles pretty rough, and the only thing i can think of is the programmer. or the aftermarket oil crossover hose.
Any suggestions will be appreciated
Thanks in advance,
Fordpower
p.s. I finally got to race the new bodystyle high output cummings the other day, it was chipped out and had exhaust, but to make a long story short "i'd rather be stroked than rammed" he got stroked!!!!!
Any suggestions will be appreciated
Thanks in advance,
Fordpower
p.s. I finally got to race the new bodystyle high output cummings the other day, it was chipped out and had exhaust, but to make a long story short "i'd rather be stroked than rammed" he got stroked!!!!!
Lead Driver
Joined: Jun 2004
Posts: 6,337
Likes: 588
From: Amarillo, TEXAS!
Well, you can rule out the programmer by resetting it to stock and seeing if it clears up. The oil crossover should only improve the idle. Elsewise, under-valve-cover wiring harness comes to mind.
Tuned
Joined: Jun 2004
Posts: 275
Likes: 9
From: San Antonio
you may have introduced air into your fuel system with the crossover mod. it can idle rough for a couple of days until it works all the air out... I read that here in one of the threads ...
Originally Posted by mueckster
Was the plug you replaced on the end of the cylinder head? You could have gotten some air in the injector oil feed system when the plug was removed. It may take a little time for it to purge out of the injectors while running. I recently installed a high pressure oil cross-over line and took a couple of days to get rid of the air before I noticed a difference.
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
How old is your oil?
Might be due for a change or switching brands. The 7.3s are very tempermental when it comes to oil. My old '99 and my '03 both seem to like anything that I give/gave them. But many seems to dislike one oil or another.
Might be due for a change or switching brands. The 7.3s are very tempermental when it comes to oil. My old '99 and my '03 both seem to like anything that I give/gave them. But many seems to dislike one oil or another.
