Rebuilt CC Calif. Rochester

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Apr 14, 2004 | 11:00 PM

Holio

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Member

Joined: Dec 2001

Posts: 116

Likes: 0

From: Orange, CA

Car: 84 Z28

Engine: 305 L69

Transmission: 700R4

Rebuilt CC Calif. Rochester

I need a rebuilt 4-bbl Rochester E4ME. Is "Carbs Unlimited" the best place to go.
I think I'm runnning very rich on my original carb with 204,000 on it and I'm getting pretty bad gas mileage.

Thanks, Gary

Apr 15, 2004 | 12:15 AM

five7kid

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iTrader: (14)

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

Might not have anything to do with a carb needing rebuild. Ignition must be up to snuff before you start messing with the carb.

Then, there's sensor input. If they aren't proper, the ECM isn't going to control the carb proper.

Finally, if it really does need a rebuild, the choices in addition to CU are: Jet Performance, Holley, your local parts stores, a local shop, and do-it-yourself.

Apr 15, 2004 | 01:37 AM

Stekman

TGO Supporter

Joined: Jul 2003

Posts: 4,803

Likes: 2

From: Grand Rapids, MI

Car: Z28

Engine: Sb2.2 406

Transmission: Jerico 4 speed

Axle/Gears: Ford 9" 3.60

Perhaps you need simply to re-adjust your rich and lean stop screws.

Apr 16, 2004 | 12:25 AM

83_1/2 L69

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Joined: May 2003

Posts: 264

Likes: 1

From: SillyCon Valley, CA

Car: 83 Z-28 (Original owner)

Engine: 305 CC-carb

Transmission: Richmond 6-speed, Rear:3.73

Quote:

Originally posted by Stekman
Perhaps you need simply to re-adjust your rich and lean stop screws.

Doubtful.

Correctly adj these requires a Dwell meter, which can also be used to troubleshoot the carb and computer.

If I had to guess, I would start with the O2 sensor.
Bad ignition or Exhaust leaks can also cause the carb to run rich.