Rough idle/miss?
Thread Starter
|
Freshman User
Joined: Mar 2007
Posts: 49
Likes: 0
Rough idle/miss?
Hi all , my 79' f350 has been running rough at idle with a slight miss.
One night while tinkering I noticed blue sparks arching everywhere !
Got new plugs and wires , fired it up ran perfect! But slowly it started
Running rough and missing again? Any ideas? Something with the electrical/ignition
System or something internal ?confused thanks for any help
One night while tinkering I noticed blue sparks arching everywhere !
Got new plugs and wires , fired it up ran perfect! But slowly it started
Running rough and missing again? Any ideas? Something with the electrical/ignition
System or something internal ?confused thanks for any help
Postmaster
Joined: Nov 2011
Posts: 2,553
Likes: 10
One thing to double check is plug gap. Excess gap will increase voltage. Also quality of plug wires varies a lot. With parts store wires I always go with the at least the "premium" variety. On my dent I have Bosh wires from AZ.
Last suggestion is to check it at night again. That helped me track down a cracked coil once. I couldn't figure out what was wrong, it had stalled, and I was under the hood at night. Got it going and saw the blue sparks coming from the coil. New coil and it was fixed.
Last suggestion is to check it at night again. That helped me track down a cracked coil once. I couldn't figure out what was wrong, it had stalled, and I was under the hood at night. Got it going and saw the blue sparks coming from the coil. New coil and it was fixed.
Thread
Thread Starter
Forum
Replies
Last Post
btemefordboy
1983 - 2012 Ranger & B-Series
6
Apr 28, 2013 12:15 PM
charkane
1973 - 1979 F-100 & Larger F-Series Trucks
5
Mar 13, 2012 08:16 AM
matt2491
1961 - 1966 F-100 & Larger F-Series Trucks
15
Mar 12, 2009 07:48 AM
