425 BIGBLOCK STALLS

  • Tiny
  • moparman 01
  • 1965 Oldsmobile 88
  • 73,000 miles

When I drive down the road the car stall let it sit for a little while it will start back up the coil is new and the points are new could that have something to do with the starter? Please help

Sunday, October 9th, 2011 AT 1:26 AM

15 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

Sounds more like carb issues than electric. That motor runs very hot and if the float level is low, it would tend to boil the fuel and thats when the motor stops.

I would be looking at the fuel delivery system.

Roy

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Sunday, October 9th, 2011 AT 1:30 AM
  • Tiny
  • moparman 01
  • Member

Thank you I will check the carb and let you know

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Sunday, October 9th, 2011 AT 1:33 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

By the way, do you have the quadrajet or the wcfb?

Roy

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Sunday, October 9th, 2011 AT 1:41 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

I agree with ase. It sounds like a fuel related problem. As he mentioned, these engines commonly ran hot. I would first check for vapor lock with the fuel. If that isn't it, the only other thing I can even think of that could do this is the wiring to the ignition system. Back then, 12 volts were fed to the ignition system on start up only. After that, there was a resister wire that dropped the voltage to 9 volts to protect points, condenser. It helped things last longer. You may want to check the resister wire for thermal issues too.

I love these old cars, but I hate to show my age. (Lol) Acttually, I wasn't born when the car was made. But I worked on a lot of similar vehicles and ones just like your when I was very young.

Let us know what you find. Remember, as ASE said, they ran hot and fuel vapor lock was an issue.

Take care,
Joe

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Sunday, October 9th, 2011 AT 1:42 AM
  • Tiny
  • moparman 01
  • Member

The thing is when it stalls and you try to crank it you can smell gasin the carb?

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Sunday, October 9th, 2011 AT 2:20 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

Ok, it could be leaking down from the bottom of the carb. I think we are on the right track for you.

Roy

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Sunday, October 9th, 2011 AT 2:54 AM
  • Tiny
  • moparman 01
  • Member

Could it be fuel filter in the in the carb?

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Sunday, October 9th, 2011 AT 3:00 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

Not likely. It has a bypass when it gets clogged

Roy

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Sunday, October 9th, 2011 AT 3:07 AM
  • Tiny
  • moparman 01
  • Member

I will check the bottom tomorrow to see if thats it it might be the gasket?

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Sunday, October 9th, 2011 AT 3:12 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

You may need to remove the carb and look underneath it to see if the 2 plugs at the bottom are leaking.

Roy

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Sunday, October 9th, 2011 AT 3:13 AM

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