rich running 4.0
07-07-2013, 10:36 PM
Senior User
Thread Starter
Join Date: Aug 2004
Location: Tulia, Texas
Posts: 264
Likes: 0
Received 0 Likes
on
0 Posts
rich running 4.0
What Would cause a 91 4.0 run rich and sound like it's running off of about 4 or 5 cylinders when you get the RPMs over about 1400 or so? Thankyou.
07-10-2013, 03:36 PM
Join Date: Sep 2003
Location: SoCal
Posts: 6,722
Likes: 0
I would look for a vacuum leak first.
Then the ignition. I think your engine should have an EDIS module and a coil pack. I would try to find another one of each to test with.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
treedoctor
Ford Inline Six, 200, 250, 4.9L / 300
7
08-23-2013 08:07 PM
VRC9170
2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6
1
02-13-2012 09:28 PM
DesertStorm
2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6
8
03-20-2008 12:57 PM
gtsmk
2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6
2
11-17-2004 07:41 AM