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86 f150 inline 6 cyl starting problems

 
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Old 01-22-2019, 05:55 PM
deepersix
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Unhappy 86 f150 inline 6 cyl starting problems

Hello,
I have a 86 f150 inline 6, it was running fine and then I parked, loaded the truck and it died. I noticed that the egr valve was leaking a small amount of fuel. It was the original one from 86, I replaced the egr valve. It will crank strong but will not start. I noticed that the carb seemed flooded. I felt inside the carb and it was wet with fuel. I waited a few hours to let it dry out, same result. Not sure what to do from here, sensor, fuel shut off??? here is a couple pictures of the carb, let me know what you think, thanks again......


 
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Old 01-22-2019, 06:00 PM
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Have You checked for fuel delivery at the Carb ? (IE: fuel pump issue) ... (spark) ... an issue I had, my engine was running and I took it out and rebuilt. Back together and no start ... found the plug sensor that is on the side of the distributor (sorry cant remember the exact name ) had quit working. Replaced and it started right up ... just a couple thoughts
 
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Old 01-22-2019, 06:09 PM
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It seems the carb was flooded each time I tried starting it..
 
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Old 01-22-2019, 06:10 PM
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I will at the distributor to see if I can see that plug..
 
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Old 01-22-2019, 06:14 PM
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The Choke Air Flap is closed or hung shut. no air gets in, floods, wont start. hold open choke with a short tool screwdriver, try to start with throttle wide open to get fresh air into manifold, if it starts feather throttle to get it to run, and warm up.
choke may be the issue. choke should be fully open when engine is at operation temp. fuel level in carb may be trash on needle & seat. float in carb may be heavy from sitting in fuel due to age of carb.
A place to start on getting it fired up. Hope this is a fix??
good luck
 
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Old 01-22-2019, 08:18 PM
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My theory; There is dirt in the carb, and it has hung the float needle open flooding the carb. Take the plastic handle of a screwdriver and peck on the top of the carb. Get someone to hold the gas pedal to the floor and crank it while you peck on top of the carb with the screwdriver handle. Holding the pedal to the floor should force the choke open.
 
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Old 01-24-2019, 11:39 PM
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Thx, I tried this, it didnt start, doesnt have the flooding like before, is there something else besides that?
 
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Old 01-24-2019, 11:40 PM
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Thx, I will try this tomorrow..
 
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Old 01-25-2019, 12:28 PM
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Any spark at plug? Your Engine control module may be dead?
 
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Old 02-17-2019, 09:26 PM
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OK, found it

It was the ignition control module, replaced it and it started up. Now it runs a little rough at idle..
 
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Old 02-17-2019, 09:26 PM
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I replaced the control module on the distributor.
 
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Old 02-18-2019, 07:02 AM
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Thanks

Originally Posted by deepersix View Post
I replaced the control module on the distributor.
hey thanks for the update ... Most of these threads just die cause nobody posts what fixed the problem ... So I wanted to say Thank You
 
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Old 02-18-2019, 07:04 AM
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Originally Posted by deepersix View Post
I replaced the control module on the distributor.
... That was what I was talking about in my first post of the thread ...
 
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Old 02-18-2019, 09:31 AM
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Originally Posted by deepersix View Post
It was the ignition control module, replaced it and it started up. Now it runs a little rough at idle..
How much has the motor run since you got it running again? Has it been up on the high way for say 10 miles?
I am thinking the plugs got fouled from fuel during the no start. Sometimes driving on the high way can clear them but if not you will have to change them.
Dave ----
 

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