Won't start after running - Chevelle Tech
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post #1 of 7 (permalink) Old Dec 22nd, 01, 1:44 PM Thread Starter
 
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In cold and hot weather after our 69 307 has been running awhile (10 - 15 minutes) and then shut off, it will not start right up again without pouring gas in the carb or spraying starter fluid in. It is not a problem if we wait an hour or more and then start it. Any ideas? It cranks just fine.

Brian
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post #2 of 7 (permalink) Old Dec 22nd, 01, 6:55 PM
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Accellerator pump is going bad or is already gone. Check it before removing the carb to see it you have any fuel squirting when you work the throttle (ENGINE OFF!!) by hand. If it's got a good pump squirt, we can move on to other things to check for, but I think you'll be rebuilding the carb.
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post #3 of 7 (permalink) Old Dec 22nd, 01, 10:16 PM
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Please, whatever you do, don't spray any more starting fluid into the poor beast! That stuff is bad for an engine.

When you say it won't start, is it that it won't turn over at all, turns over sluggishly, turns over just fine but won't start, or maybe another scenario?

edit:
Oops, I didn't pay close enough attention to the whole post. You did say "It cranks just fine."

I'd say it's fuel related. I once had a pickup with an electric fuel pump that had no pressure regulation. It would overpressure and flood the engine after running a short while. Wouldn't start until it sat long enough to bleed the pressure off.

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post #4 of 7 (permalink) Old Dec 23rd, 01, 1:10 AM
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why do you say that starting fluid is bad for any engine?


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post #5 of 7 (permalink) Old Dec 23rd, 01, 10:02 AM
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It causes EXTREME detonation, damages pistons, rings, cylinder walls, causes unnecessary stress on rod pins and bearings. It's just a crutch. It's easier and (in the long run) less expensive to just fix the problem rather than force the engine to start by using ether.

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post #6 of 7 (permalink) Old Dec 23rd, 01, 7:22 PM
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Similar problem. Turned out to be bad electric fuel pump and carb needed to be rebuilt. Replaced both and problem was solved.

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post #7 of 7 (permalink) Old Jan 2nd, 02, 10:48 AM
 
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Before you do many Major changes, check to make sure the timing is set correctly.
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