Holley sitting for 4 years... rebuilt didn't work... ???
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Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Holley sitting for 4 years... rebuilt didn't work... ???
I have a big Holley (prob 700 or so) off a 327 I got in a 74 Nova. (Motor going in my 86)
The car was sitting for 4 years... and I know these carbs need a rebuild after sitting a month... but that didn't fix it. If the motor runs at all, it runs like total crap. Doesn't look like anything is sticking, what could it be?
The car was sitting for 4 years... and I know these carbs need a rebuild after sitting a month... but that didn't fix it. If the motor runs at all, it runs like total crap. Doesn't look like anything is sticking, what could it be?
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Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
Was a fuel additive such as Sta-Bil used at all? If not, I'd suspect that the fuel has gone bad. You have bad gas.
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Describe the rebuild that was done. The carb # ("List" off the front of the choke tower) would be helful.
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Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
lol, ya the gas is definately varnish... but I'm running the line into a jerry-jug.
I'm not sure of the rebuilt, but the guy that I got it from said that he got a rebuild kit and did it. I think it was all the gaskets and the jets... I think that's what they are called...
I'll get the #'s tonight.
I'm not sure of the rebuilt, but the guy that I got it from said that he got a rebuild kit and did it. I think it was all the gaskets and the jets... I think that's what they are called...
I'll get the #'s tonight.
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A proper "rebuild" disassembles the carb's main components (you don't need to remove the throttle butterflies from the shafts, for instance), soaking all metal parts in "real" carb cleaner, blowing through all passages with compressed air, and replacing all "soft" parts (gaskets, diaphragms, power valve(s), etc.) when reassembling. I'd guess at least one crucial step was skipped.
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Car: 1984 Trans Am WS6
Transmission: 700r4 Highly Modified
If it was sitting long enough for the gas to dry out there could be residue left in the carb. The passeges in the Holleys can clog up pretty easy. You will probably get the best results from taking it apart and soaking it in some parts cleaner/real carb cleaner then blowing the passages out as five7 said. It would be a good idea to go ahead and replace the gaskets and power valve as well.
I think this would be the most surefire way to be sure it will work properly when you go to use it.
I think this would be the most surefire way to be sure it will work properly when you go to use it.
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Car: 4
Engine: 6
Transmission: 5
Yes, it can be broken.... castings can crack, or erode through from corrosion, or orifices can plug up with corrosion that even "real" carb cleaner (wonderful stuff BTW, just don't get it on your skin, you'll smell like that for days) can't remove, or there could be stripped screw threads in the castings. And then of course you could have any number of other issues relating to the "rebuild", from using the wrong gaskets, to putting them in upside down or backwards, to a backfire the first time it tried to start that toasted the power valve, and so on.
If it seems like the carb has issues, try another carb on the motor; or do as five7 suggested, and re-rebuild it with great care and attention to details. A carb kit is only 20-odd dollars, so it's not a huge investment lost even if it does turn out that the carb core is trashed somehow.
Carb #s would be helpful; that would help determine whether the carb is appropriate at all, what kit to get, what to watch out for, etc.
If it seems like the carb has issues, try another carb on the motor; or do as five7 suggested, and re-rebuild it with great care and attention to details. A carb kit is only 20-odd dollars, so it's not a huge investment lost even if it does turn out that the carb core is trashed somehow.
Carb #s would be helpful; that would help determine whether the carb is appropriate at all, what kit to get, what to watch out for, etc.
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Originally posted by RB83L69
"real" carb cleaner (wonderful stuff BTW, just don't get it on your skin, you'll smell like that for days)
"real" carb cleaner (wonderful stuff BTW, just don't get it on your skin, you'll smell like that for days)
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
When I was flipping burgers in high school to save money for university that was one of the only things that would take the smell of onions out of my fingernails.
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Car: 1985 Chevy Camaro IROC-Z
Engine: 350ci from 79camaro
Transmission: 5 speed manual on lsd
Are you sure its the carb thats the problem? Just want to make sure that you're not jumping to the wrong conclusion....
Are things like the float levels working correctly etc and is it obviously the problem, or does it seem to shove gas into the engine sorta right?
Si.
Are things like the float levels working correctly etc and is it obviously the problem, or does it seem to shove gas into the engine sorta right?
Si.
Last edited by iroc-si; 06-23-2004 at 06:41 PM.
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Car: 1985 Chevy Camaro IROC-Z
Engine: 350ci from 79camaro
Transmission: 5 speed manual on lsd
With the air filter off, does it do a reasoanable job at atomising the gas when you jump on the gas peddle? should be easy to see down the barrels.
If so then I would check everything else first. ie. what do your plugs look like after a run? do you get a decent spark etc?
Si.
If so then I would check everything else first. ie. what do your plugs look like after a run? do you get a decent spark etc?
Si.
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Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Um, ya lost me
The plugs look kinda sooty, but all have great spark when I checked. I got a new cap, rotor, and an Accel Supercoil... but no change.
I may not get the #'s till tomorrow, no ride over there (at my friend's house... driveway here is full!)
The plugs look kinda sooty, but all have great spark when I checked. I got a new cap, rotor, and an Accel Supercoil... but no change.
I may not get the #'s till tomorrow, no ride over there (at my friend's house... driveway here is full!)
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Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
lol, been a while, but here are the #'s on it:
1850-2
So it's a 600cfm. Any idea what year it could be? Is there a date stamp on it somewhere?
1850-2
So it's a 600cfm. Any idea what year it could be? Is there a date stamp on it somewhere?
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