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Old 09-18-2015, 06:28 PM   #1
Dmcinfo
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Won't Idle When Put In Drive

My 1972 350 w/4wd starts and idles fine but when I put it in drive the motor dies. Any suggestion on what the problem is? Thank you in advance for any advice you can give me.
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Old 09-18-2015, 07:29 PM   #2
franken
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Re: Won't Idle When Put In Drive

Common symptom of a vacuum leak.
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Old 09-18-2015, 09:45 PM   #3
geezer#99
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Re: Won't Idle When Put In Drive

Or a lack of initial timing!
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Old 09-18-2015, 10:08 PM   #4
Andy4639
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Thumbs up Re: Won't Idle When Put In Drive

What is the RPM's @ idle before putting in gear. A auto should be around 700RPM and maybe a little more.

Stock motor you should check base timming first with no vacuum applied. Then hook vacuum up and check again


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