85-ford won,t start

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  #1  
Old 12-02-06, 12:50 PM
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85-ford won,t start

hi frist time here hope someone can help. i have a 85-ford f-150 302 carb
it turns over but won,t start, things i,ve done ,new plugs,getting spark to all the plugs,getting gas to the carb even tried starting fluided . checked timeing piston tdc pointing to #1, replaced ignition box, ignitionmodule,condentsor,checked all compression at all cylinders- good.rotor is truning.
any help please been walking/hitching to work for aweek now.
 

Last edited by ironman0509; 12-02-06 at 03:10 PM.
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  #2  
Old 12-02-06, 02:20 PM
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Have you checked your starter/alternator/battery? There might not be enough juice to turn it over.
 
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Old 12-02-06, 03:08 PM
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85-fordwon,t strart

yes engine turns over fine .
 
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Old 12-02-06, 03:41 PM
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If you have spark, fuel, and compression, the only thing left would be air. Have you checked all your vacuum lines, etc?
 
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Old 12-02-06, 03:44 PM
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You didn't say if you replaced your distributor cap?
 
  #6  
Old 12-02-06, 04:18 PM
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85-ford

yes i checked cap. I will recheck all hose in morning.
thank again .
 
  #7  
Old 12-02-06, 06:32 PM
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its sounds like you have everything that an engine needs to run you are sure the compression is good and what does the plugs look like are they wet with gas like its flooded also a weak coil may appear to have spark but will not be firing the plug under compression a good coil should be able to jump atleast 3/8 inch gap at each plug wire.
 
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Old 12-03-06, 12:44 AM
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You need three things to get an engine to start. 1)compressed air/fuel mixture in the cylinder 2)adequate spark to ignite the mixture 3)ignition at the right time

If it sputters, backfires, or blows smoke from the exhaust or out the carb, you have the first two. Recheck the timing.

If it doesn't fire, and you have fuel and spark, check your compression.
 
  #9  
Old 12-03-06, 10:16 AM
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If I'm not mistaken this is the last year Ford used throttle body injection on this model. They were phasing in the models a little at a time
Therefore you may be getting fuel but not enough to start. I forget if this used a traditional fuel pump or an electric fuel pump.
What kind do you have ?
 
  #10  
Old 12-03-06, 01:44 PM
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85-ford

When i check spark at plugs i get at least 1/2 inch gcp of spark. It has two b
arrel carb, getting plenty of compression,time is good, no vac-leaks. I've even use starting fluild. Traditional fuel pump, getting gas to carb. No plugs are dry.
 
  #11  
Old 12-03-06, 01:55 PM
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might try unbolting the exhuast system to see if it starts as sometimes a catylitic convertor can plug so badly that it will cause a no start, but short of that you are missing something.
 
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