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Old 01-18-2011, 07:49 PM
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Chevy 327 not running right

So I was running over to my parents house today and my car starting hesitating on acceleration to the point where it would stall. The whole way there couldn't go much more than 15 mph or car would chug and try to stall. Got to my parents and my dad and I tried messing with the timing, checked vacuum's and ajusted the choke and nothing made it better. Couldn't mess with mixture screws cause looks like the guy who owned it before me broke them or something. Still running the q-jet with the stock intake but have a nice Holley carb and performer intake sitting here to put on, but was going to try to wait till summer to change due to weather. What I was wanting to know is what could cause the car to run like that? Timing may be off slightly but don't think enough to do this, dad said maybe fuel pump. Does anyone have any ideas??
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Old 01-18-2011, 07:52 PM
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fuel pump , plugged filter, maybe a tank full of water.Is it a points type ignition? maybe they need adjusted?
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Old 01-18-2011, 08:05 PM
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Has HEI ignition have ran dry gas through the system within the last month or two. Had also checked the fuel filter about 2 months ago was nice and clean. What it will do also is when I start the car give it a few good rev's sounds great then it starts choking up and wants to stall or will stall. Even if I let up on revving it for a minute and go back to rev the engine it will still want to stall.
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Old 01-18-2011, 08:09 PM
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recheck fuel filter
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Old 01-18-2011, 08:55 PM
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Will give it a check but one of the reason's I checked it a couple months ago was it was doing something similar. Just frustrated cause it does not do it all the time. Drove home from work a few days ago and it seemed to be ok little sloppy at 60 or 70 mph, got off express way stopped to grab food and it ran like this since. Just found something online about the spring that changes throttle responce on secondaries, could this being adjusted poorly cause this problem?

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Old 01-18-2011, 10:27 PM
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it definatly fuel related double check pump an filter could be a gummy stuck carb. ....
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Old 01-18-2011, 10:29 PM
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For the secondaries to be causing a problem, it would have to be when you were running the engine hard enough to require them to open. If this is occurring below 1/3 throttle or thereabouts, it's not the secondaries.

If it's happening when the secondaries are trying to kick in, check to see that the cam that lifts the secondary rod hangar isn't missing.

Be sure the choke isn't closing on you. It would help to know if it was rich or lean. If you could get someone to follow you, see if they can see dark or black smoke when it's stumbling- that would be rich. If you see nothing, it could be lean or ignition-related.

I would take a can of carb spray and follow the can directions. Pay special attention to the air bleeds both inside the throttle bores on the primary side and the bleeds you will see towards the front of the primaries w/the choke open before the actual bores.
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Old 01-18-2011, 10:39 PM
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It sounds like the sock in the fuel tank is collapsing. Get a fuel pressure gauge, so when it goes to doing it you`ll know if it`s getting fuel or not.
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Old 01-18-2011, 10:48 PM
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My dad followed me home when it started doing this today, he didn't say anything about black smoke. Would it be dark clouds of black smoke or just some? I can ask him what he saw tomorrow morning. Now I had an old Nova and I remember a smell being related to rich or lean carb conditions from someone this true? Now a fuel pressure gauge does that just clamp into the fuel line? Sorry for all the questions, its been awhile since a I had a car with a carb and even then I don't know it all. Guess you live and learn
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Old 01-19-2011, 09:37 AM
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Dirt could be in the bowl clogging the jets.
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