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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: frankentruck on September 18, 2014, 02:07:41 pm

Title: 1980 k20 starting issues, once started runs fine?
Post by: frankentruck on September 18, 2014, 02:07:41 pm

...problem solved. Vapor lock

Title: Re: 1980 k20 starting issues, once started runs fine?
Post by: jaredts on September 18, 2014, 04:17:42 pm

Hard to start can mean the starter doesn't turn the engine over quickly or it turns over fine but no combination of pumping the pedal and turning over the engine seems to make it start.  Please describe what you do to start it once it is up to temperature and what happens when you try to start it.
One quick thing to check is that when your truck is up to temperature, with the engine off:  remove the breather from the carburetor and just move the throttle a little with your hand.  Just make sure that the choke doesn't snap closed when you do that.  It should stay practically all the way open.

Title: Re: 1980 k20 starting issues, once started runs fine?
Post by: Captkaos on October 09, 2014, 10:31:15 pm

Did you figure this out?

Title: Re: 1980 k20 starting issues, once started runs fine?
Post by: Blazin on October 12, 2014, 07:09:45 am

Might not have anything to do with the hard start, but I would switch it over to HEI distributor, bet rid of the two coil mess.

Title: Re: 1980 k20 starting issues, once started runs fine?
Post by: Stewart G Griffin on October 13, 2014, 09:46:27 am

So, do you mean when the engine is warm it's hard to start?