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Engine wont start

Tiny
INSOGNA8
  • MEMBER
  • 1978 CHEVROLET MONTE CARLO
  • FWD
  • AUTOMATIC
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?
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Wednesday, June 22nd, 2011 AT 6:26 PM

7 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
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?
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Wednesday, June 22nd, 2011 AT 7:33 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
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?
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Wednesday, June 22nd, 2011 AT 7:37 PM
Tiny
INSOGNA8
  • MEMBER
  • 9 POSTS
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?
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Wednesday, June 22nd, 2011 AT 7:51 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Docfixit beat me to it, you don't need two of us, have a good day.
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Wednesday, June 22nd, 2011 AT 7:59 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
JDL provided diagram so before we get to involved what is battery voltage? Have you tried a jump?
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Wednesday, June 22nd, 2011 AT 8:47 PM
Tiny
INSOGNA8
  • MEMBER
  • 9 POSTS
Yes, we have tried jumping it. Its a new battery.
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Wednesday, June 22nd, 2011 AT 9:42 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
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
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Thursday, June 23rd, 2011 AT 12:51 PM

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