Ford 460 not running right
Thread Starter
|
New User
Joined: Jun 2020
Posts: 10
Likes: 0
Ford 460 not running right
I have an 86 Ford E-350 with the Holly carburated 460. Little back story... Bought it not running and finally got it running. It was having a no start issue and the previous owners threw a new durlast ICM, duralast distributer, and wires at it trying to get it running. Turned out being the ignition switch under the dash.
Anyways I start it, runs okay then warms up and randomly dies when warm. I tried taking it for a drive and it had no power and backfired thru the carb. It finally turned off, left me stranded the side of road. Had to wait for it too cool down and go back and bring it home. Pulling the vacuum hose on the vacuum advance makes it run better but still has the same symptoms. I've pulled the distributer multiple times and made sure its clocked @ TDC on the compression stroke. I've made sure the wires are all correctly placed. Ive timed my distributer with a timing light and still runs bad. Reading online, I'm thinking I might have a faulty ICM? Any help would be great, thanks guys.
Anyways I start it, runs okay then warms up and randomly dies when warm. I tried taking it for a drive and it had no power and backfired thru the carb. It finally turned off, left me stranded the side of road. Had to wait for it too cool down and go back and bring it home. Pulling the vacuum hose on the vacuum advance makes it run better but still has the same symptoms. I've pulled the distributer multiple times and made sure its clocked @ TDC on the compression stroke. I've made sure the wires are all correctly placed. Ive timed my distributer with a timing light and still runs bad. Reading online, I'm thinking I might have a faulty ICM? Any help would be great, thanks guys.
Moderator
Joined: Jan 2001
Posts: 56,990
Likes: 2,740
From: Virginia
Does it still run better with the vacuum advance off? When it's idling and you pull the vacuum advance off, does the idle slow down? The 460's had a very complex vacuum system on them with a very complicated vacuum diagram. I would imagine something is wrong there.
Thread
Thread Starter
Forum
Replies
Last Post
Markus Luukko
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
4
Jun 22, 2018 03:41 PM
superman64011
1948 - 1956 F1, F100 & Larger F-Series Trucks
10
Aug 26, 2012 10:52 PM
SupercrewzerV10
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
5
Oct 13, 2007 01:27 PM
79driver
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
16
Mar 5, 2007 06:27 PM
