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Old 05-03-2012, 09:03 PM   #1
jaybones
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1973 C20 292 L6 Low Idle Condition....

Just bought a weekender and quasi-project truck and gave it a good tune up, needed new water pump, hoses, etc. Question is, does anybody else with an early-to-mid 70s have any experience with this low idle condition i'm experiencing?

it doesn't stall out, but the idle is so low (think: sitting at a stop sign) that I have to actually pay attention to whether or not it is still actually running. previous owner was an old-timer who said it had always idled low, and i don't know if i'm just not used to it yet....

any thoughts are appreciated!
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Old 05-03-2012, 09:06 PM   #2
Shane22696
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Re: 1973 C20 292 L6 Low Idle Condition....

Does it have an idle speed screw on the carb? If so just turn it until it sounds right.
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Old 05-03-2012, 09:12 PM   #3
jaybones
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Re: 1973 C20 292 L6 Low Idle Condition....

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Originally Posted by Shane22696 View Post
Does it have an idle speed screw on the carb? If so just turn it until it sounds right.

its a 1bbl Rochester and I looked but nothing "stood out" to me as the idle screw. thoughts on exactly where it would be?
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Old 05-03-2012, 09:14 PM   #4
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Re: 1973 C20 292 L6 Low Idle Condition....

Not completely sure on a monojet, but on every other carb I've see they're under the throttle linkage pointing towards the rear of the carb. Hope you get it worked out!
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Old 05-03-2012, 09:17 PM   #5
jaybones
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Re: 1973 C20 292 L6 Low Idle Condition....

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Originally Posted by Shane22696 View Post
Not completely sure on a monojet, but on every other carb I've see they're under the throttle linkage pointing towards the rear of the carb. Hope you get it worked out!
thanks man, i'll see if i can't search it out tonight!
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Old 05-03-2012, 09:19 PM   #6
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Re: 1973 C20 292 L6 Low Idle Condition....

Not a problem, hope I helped! If you find it turning it to the right should raise the rpms.
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Old 05-03-2012, 10:53 PM   #7
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Re: 1973 C20 292 L6 Low Idle Condition....

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Not a problem, hope I helped! If you find it turning it to the right should raise the rpms.
found it! it's on the front end side of the carb, hidden all the way at the bottom. only reason that i noticed it was because it has a shield with a screwdriver hole out in front of it. figured that the shield was there for a reason and followed it back and found that sucka!

besides the rotted out muffler she's purrin like a kitten now

headers and flowmaster here i come!
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Old 05-03-2012, 11:00 PM   #8
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Re: 1973 C20 292 L6 Low Idle Condition....

Glad to hear it man
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