Engine Dies in Third
Thread Starter
|
New User
Joined: Feb 2020
Posts: 1
Likes: 0
Engine Dies in Third
So I recently bought a 78 f 150 single cab short bed with a 400m and a 4 speed. It idles fine and will drive well until about 20 minutes into running. if I stop at a stoplight the truck will take off fine but once I hit about 2k in third and am about to shift the engine will die. if I clutch in it will rev fine but will die under pressure. and once I pull over it will die in first and second too. I can leave it sit for an hour and restart the process. Currently ive replaced both fuel pumps, fuel filter, carb base plate gasket, acceleration switch, ignition coil, ignition control module, and vacuum advance, and it still does it. The distributor, plugs, and wires are all in good shape. Im lost and I need to see if yall had any ideas on what else it might be.
Fleet Mechanic
Joined: Jul 2017
Posts: 1,276
Likes: 12
From: KY
So I recently bought a 78 f 150 single cab short bed with a 400m and a 4 speed. It idles fine and will drive well until about 20 minutes into running. if I stop at a stoplight the truck will take off fine but once I hit about 2k in third and am about to shift the engine will die. if I clutch in it will rev fine but will die under pressure. and once I pull over it will die in first and second too. I can leave it sit for an hour and restart the process. Currently ive replaced both fuel pumps, fuel filter, carb base plate gasket, acceleration switch, ignition coil, ignition control module, and vacuum advance, and it still does it. The distributor, plugs, and wires are all in good shape. Im lost and I need to see if yall had any ideas on what else it might be.
Laughing Gas
Joined: Dec 2004
Posts: 754
Likes: 3
From: Idaho
Have you checked to to see if you have good fuel draw from the fuel tank. But it really sounds like ignition module, btw what the hell is an acceleration switch,or are you talking about throttle actuator?
Thread
Thread Starter
Forum
Replies
Last Post
raxxter
1973 - 1979 F-100 & Larger F-Series Trucks
10
Aug 22, 2019 11:16 AM
Koty Harley
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
24
Jun 1, 2017 07:09 PM
Kilo Sierra
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
5
Sep 14, 2012 03:07 PM
HateTank
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
32
Jul 10, 2007 04:14 PM
topdeadcenter
1987 - 1996 F150 & Larger F-Series Trucks
21
Nov 29, 2003 01:33 PM
