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Old September 5th 06, 06:24 PM posted to rec.autos.makers.jeep+willys
Mike Romain
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Posts: 3,758
Default '79 304 Edelbrock carb problems vs Holley carbs?

To start, you will 'always' have the gas smell in your clothes from side
pipes, that is why they are not street legal in lots (most) of places.
The gas smell comes with a whole bunch of carbon monoxide as well, which
is deadly.

The exhaust pipes need to exit the body at the back corners on about a
30 to 45 degree angle to be safe and not as smelly.

As you have them, the exhaust vortexes under the wheel well which fills
the cab up. Really dangerous if you have a top or doors on.

The cold start issues can simply be a matter of having the gas filter in
upside down. The filter has 2 outlets. The center outlet goes to the
carb and the 'top' outlet goes to the return line. If the return line
outlet isn't at the top, then gas will syphon back to the tank creating
a vapor lock as it sits.

The return lines primary purpose is to prevent vapor lock after a hot
shutdown also.

A pinhole leak in the suction pipe from the pump to the tank can also
cause cold start issues. It can just let air in when it sits. You can
usually see a stain on the line (usually near a frame clip) or rubber
hose where the leak is.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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Skyjacker wrote:
>
> My '79 CJ-5 304 seems to have fuel related problems. It is difficult to
> start when the engine is cold; it turns over fine, but takes too long for the
> engine to start. Once running, it emits gassy fumes out of the exhaust side-
> pipes that make your clothes smell like gasoline while the top is off.
>
> I had a carb specialist try to adjust the carb, but it didn't help. The carb
> is an Edelbrock 4-barrel mounted on an Edelbrock hi-rise manifold. The motor
> has a street cam and headers.
>
> I was told that Edelbrock carbs do not work well with 304's, and to get a
> Holley Avenger truck carb with an electric choke. Before I drop the cash on a
> Holley, I would appreciate some advise to this problem.

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