Need help with choke on 84 Z-28!!!!!!
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Member
Joined: Mar 2000
Posts: 145
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From: Great Bend, KS, USA
Need help with choke on 84 Z-28!!!!!!
My friend's 84 Z has a 5.0 carbed engine, and the butterflies just hang open....I think there's some wire missin or something...casn anyone help?
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If you've gotta fix it, fix it better than stock.
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If you've gotta fix it, fix it better than stock.
Junior Member
Joined: Jul 2000
Posts: 21
Likes: 0
From: rougemont, north carolina
My 84 has the same problem. I took the carb off today and traded it in for a new one. I would like to know the answer to this to in case I still have this problem later.
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1990 5.0 AOD lx
best on old combo
13.65 at 104.57
347 stroker coming
1984 camaro z-28 stock and slow
1982 mazda rx-7, 350 swap in the works.
superstangs messageboard
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1990 5.0 AOD lx
best on old combo
13.65 at 104.57
347 stroker coming
1984 camaro z-28 stock and slow
1982 mazda rx-7, 350 swap in the works.
superstangs messageboard
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If a wire was missing (i.e., the power to the thermostat), then the choke would be slow to open and probably wouldn't open all the way.
Sounds more like something isn't connected properly internally or is loose/broken. The first thing to check would be the linkage to the butterfly. Next, insure the tab on the thermostat spring is engaging the tab on the carb linkage (this will require removing the choke thermostat housing). Also possible is that the thermostat is not properly adjusted.
Has this carb been taken apart recently? The choke mechanism is a bit tricky to get together, and if something wasn't tightened properly, it may have come loose enough to no longer shut the butterfly.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, WP 305 heads ported & polished, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.
Sounds more like something isn't connected properly internally or is loose/broken. The first thing to check would be the linkage to the butterfly. Next, insure the tab on the thermostat spring is engaging the tab on the carb linkage (this will require removing the choke thermostat housing). Also possible is that the thermostat is not properly adjusted.
Has this carb been taken apart recently? The choke mechanism is a bit tricky to get together, and if something wasn't tightened properly, it may have come loose enough to no longer shut the butterfly.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, WP 305 heads ported & polished, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.
Senior Member
Joined: Aug 1999
Posts: 950
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From: This spot right here --->*
Car: 2002 SOM z28
Engine: LS1
Transmission: T-56
More info needed. Did anyone mess with the choke houseing? It could be installed 90 degrees off or something. Another possibility is that the thermal spring (I don't know what else to call it) inside the choke houseing could have snapped and then it would need to be replaced. The butterfly should have a bit of "spring" to it if you try to open/close it with by hand.
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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...
-=ICON Motorsports=-
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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...
-=ICON Motorsports=-
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