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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

crank no start problem

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Old Jan 11, 2015 | 02:51 PM
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crank no start problem

1980 300 6 cylinder. Have fire and fuel. New carb, module, plugs, wires, cap rotor, coil. Rotor turns. Compression is 120 to 130 across the board. Was running rough and had no power. Now will not start. 3-6 plugs wet with fuel before new carb. Can not figure out why it will not run. Any help will be much appreciated.
 
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Old Jan 11, 2015 | 04:04 PM
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Get another set of plugs. The ones that are wet are ruined.
 
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Old Jan 11, 2015 | 05:58 PM
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Just pulled number 4 plug and turned over motor with it in plug wire and it has solid spark.
 
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Old Jan 11, 2015 | 07:51 PM
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Originally Posted by jntx1976
Just pulled number 4 plug and turned over motor with it in plug wire and it has solid spark.
Plug was not wet? Make sure you have fuel squirting down the carb when you push the throttle open.

I know you had fuel before. You are going to have to go over the whole thing again. If you look at your list it should at least cough. You are missing something. You just need to find it.
 
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Old Jan 11, 2015 | 08:38 PM
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Plug on 6 got wet after carb install. 4 was dry this time when I pulled. It tries to start but just wont. Seems like it's flooded or timing is off but, I have checked that and it's good. Gear on dizzy is good as well. Has me completely stumped.
 
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Old Jan 13, 2015 | 09:26 PM
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Can anyone tell me if this could still be a cylinder head problem. Possible sticking valve...
 
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Old Jan 13, 2015 | 09:28 PM
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One (or even several, need to have many, many) sticking valves will not cause a no-start problem.

You need fuel, spark, and compression - in the proper proportions and at the right times.
 
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Old Jan 14, 2015 | 10:25 AM
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Make certain the ignition wires were replaced correctly. The firing order is: 153624.
 
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Old Jan 14, 2015 | 10:32 AM
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Originally Posted by jntx1976
Just pulled number 4 plug and turned over motor with it in plug wire and it has solid spark.
Nice fat snappy blue spark, or reddish/yellow? Just so everyone is clear on that.
 
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Old Jan 14, 2015 | 05:10 PM
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Originally Posted by jntx1976
Can anyone tell me if this could still be a cylinder head problem. Possible sticking valve...
Sticking valve would give you no compression in that cylinder correct?
 
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