Engine wont start

1978 CHEVROLET MONTE CARLO
FWD • AUTOMATIC
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INSOGNA8
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I have a 78 Monte carlo. For some reason it wont start. At first the car wouldnt stay on. Changed the fuel Filter, and it was a vacuum seal adn it was fine, but now it wont start at all. Changed the ignition switch, battery is good, carburator is good, starter is good. What else could it be? Someone said maybe a bad connection or wiring but we dont know from where?
Jun 22, 2011 at 6:26 PM
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DOCFIXIT
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Check for spark pull plug hold 1/4" from block crank spark? if yes spray carb cleaner into carb crank fire? Ignition points or changed to HEI?
Jun 22, 2011 at 7:33 PM
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JDL
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Are you saying it cranks good but won't start, or it won't even crank? If it won't even crank, turn on the headlites, turn key to crank, any reaction from the headlamps? Do they go out, stay bright, anything?
Jun 22, 2011 at 7:37 PM
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INSOGNA8
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It doesnt turn over at all. The lights works. I am not sure what a HEI? I was also told maybe the Nuetral Safety Switch?? I dont even know what that is?
Jun 22, 2011 at 7:51 PM
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JDL
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Docfixit beat me to it, you don't need two of us, have a good day.
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Jun 22, 2011 at 7:59 PM
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DOCFIXIT
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JDL provided diagram so before we get to involved what is battery voltage? have you tried a jump?
Jun 22, 2011 at 8:47 PM
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INSOGNA8
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Yes, we have tried jumping it. Its a new battery.
Jun 22, 2011 at 9:42 PM
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DOCFIXIT
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Find neutral switch on trans. use test light or meter check for voltage on Yellow wire key in start if present then check purple wire if no voltage then switch is faulty. Temp fix pull connector jumper from Yellow to Purple to start
Jun 23, 2011 at 12:51 PM
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