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Old 10-19-2021, 07:28 PM
markpj23 markpj23 is offline
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Join Date: Sep 2006
Location: Las Cruces NM
Posts: 390
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Quote:
Originally Posted by NeighborsComplaint View Post
Check your float level first. With the engine shut off, remove the sight plug ....
OK stupid question but where is the sight plug on this one? I see pressed in plugs is all it looks like to me... Also looks like there is only one metering block on this carb, and two idle adjustment screws, one on each side correct? Idle screw is to the right of the red spring wrapped adjustment screw at the front of the carb if I am getting this right. Close-up picture attached.

Quote:
Originally Posted by NeighborsComplaint View Post
...If you see sooty exhaust or liquid fuel drip from the tail pipe, then a leaking (blown) or out of spec for the engine's manifold vacuum is likely the cause. If the car smells gassy while driving and the tailpipes are always sooty, this is the probable cause..
I read 14 inches of vacuum at idle when warm. Adjusting for my 4000ft elevation, that's 18 inches equivalent at sea level. The car definitely smells "gassy" all the time.

Quote:
Originally Posted by NeighborsComplaint View Post
...Regarding secondary operation, Holleys are different than Q jets. A Holley carb has only a single set of throttle blades, they do not howl on secondary opening as you may be accustomed to with a Quadrajet (air taking a more torturous path around the secondary air flap and secondary throttle blades and causing the secondary air flap to oscillate)....
Thanks for the info - explained nicely.
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Las Cruces NM
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