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1981 Bronco Won't Start

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  #1  
Old 01-25-2001, 10:11 AM
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1981 Bronco Won't Start

I have changed out all of the ignition components, changed battery wires, plugs, rebuilt distributor, new cap and rotor, new wires, ignition control module, coil pickup, tested coil its ok, netural switch, and selonoid all ok. Getting good fire, blue spark and still can't get engine to crank! Getting good fuel to carb however it is spitting and even catching fire when I try to crank engine. Problem began on cold night, truck cranked fine and ran about 1/2 mile then engine died, truck would continue to crank but would die when I tried to accelerate, finally after several attempts I was able to get truck to run, engine seemed fine. Next day engine would not crank. I have been able to get truck to start only one time since the problem began and it would restart after warming however after several hours it would not restart and has not started again. HELLLLLP and THANKS!!
 
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Old 01-25-2001, 01:35 PM
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1981 Bronco Won't Start

is your carb flooding the engine out?

what do your plugs look like?


If it is still running. you didn't try hard enuf!
 
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Old 01-25-2001, 03:24 PM
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1981 Bronco Won't Start

[font size="1" color="#FF0000"]LAST EDITED ON 25-Jan-01 AT 04:25 PM (EST)[/font][p]Carb is not flooding, gas flow is normal and I'm still trying!!! plugs are brand new, and are gapped to specs.
 
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Old 01-25-2001, 03:27 PM
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1981 Bronco Won't Start

tried a compression check yet.




If it is still running. you didn't try hard enuf!
 
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Old 01-25-2001, 06:00 PM
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1981 Bronco Won't Start

sounds like it might be a worn timing chain. if it is a 300-6, it has gears instead of a chain.
 
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Old 01-29-2001, 06:57 PM
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1981 Bronco Won't Start

 
  #7  
Old 02-01-2001, 06:25 PM
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1981 Bronco Won't Start

Are you sure you don't have water in the tank or float bowl (if carb.)?

If your truck was running fine before, and it was a cold night this could have happened. Try draining the bowl (then the tank).

Budman
'90 Bronco 4x4, 33s, 4 in. lift, E303 cam, blah, blah
 
  #8  
Old 02-02-2001, 05:33 AM
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1981 Bronco Won't Start

I have recently been having a problem getting my Bronco to start as well. At one point, it also would not crank like yours. The problem turned out to be the starter solenoid. I also had the starter and battery tested as well, just to be sure. Good luck.
Eric Tobolski
 
  #9  
Old 02-02-2001, 12:37 PM
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1981 Bronco Won't Start

[font size="1" color="#FF0000"]LAST EDITED ON 02-Feb-01 AT 01:56 PM (EST)[/font][p]Since it is not even cranking over at times....I'd start at the basic and eziest/cheapest ways to check:
first...battery and ground cables/connections...frame to engine and batty to eng..whatever..
then from batty (hope it's a good batty/checked under load!)....to the starter and solenoid.
know how to check for voltage at the solenoid w/key "on"..and key.."start"? is the solenoid clicking? when it won't crank?
if it clicks and won't crank, see if you have voltage at the main + conn. @ da starter, if so, then have the starter checked for grounds/hi resistance in the windings, etc.
if you have voltage there....then...use heavy duty jumper cables to check out the main cables from the batty..a visual insp sometimes does not show ya that the cable strands kinda sux, or the connector sux...run em from batty neg to a good ground (same as the cable runs)..if still ng, run da other from batty to starter..see if it works

that's my idea for basic stuff....although i am kinda lt headed again today!..
good luck dude!



 
  #10  
Old 02-02-2001, 09:23 PM
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1981 Bronco Won't Start

I think I misread your note - "engine won't start" and "engine won't crank" are two different things (not necessarily unrelated).

Bud
 
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