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Topic: Rochester

in Forum: C3 Engines


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Rochester (1/4)
 2/8/23 1:38pm
Corvette-Ron
Limited Member
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, - Canada

Vette(s):
1976 Stingray, blue, 4 spd., one owner (me)


Joined: 7/16/2007
Posts: 15

The car is taking longer to start every year.

I've replaced the fuel pump and rebuilt the carb, sealed the well plugs etc. with no change.

After cranking for 15 - 20 seconds it starts and runs fine thereafter.

Thinking the gas is evaporating since they removed the additive to prevent evaporation from fuel.

Anyone installed a little inline electric fuel pump to bring up pressure before starting?



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Re: Rochester (2/4)
 2/8/23 5:39pm
F4GaryGold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.


Joined: 8/26/2006
Posts: 1399

Not evaporating overnight but maybe after a month.



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Re: Rochester (3/4)
 2/22/23 12:33pm
Steevo
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San Diego, CA - USA

Vette(s):
'73 L48 Coupe, 383, M20, A/C, Electric Windows. Matterhorn White Jet-Glo w/ Dark Blue interior. Rochester, Edelbrock, Blackjack Ceramics, Borlas w/ 2.5" mandrel X over, Cooper Cobras on both OEM Steel and Aluminum Wheels.


Joined: 11/10/2013
Posts: 51

I haven't installled an e/fuel pump Ron, but your problem seems odd, to me anyway. Do you really feel fuel is not getting to the carb? 

Ever disconnect the hard line from the pump-to-carb (at the carb of course) and catch it in a jar to see what you're getting? 

What type of choke does your Rochester have, and is it working properly?

Steve



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Re: Rochester (4/4)
 2/22/23 1:24pm
manchestersharkLifetime Member
Lifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.


Joined: 10/31/2007
Posts: 2376

Here's only a thought. What filter in the carb do you have? SOME of them with the long paper filter have a flap that is on the end in the carb. It keeps pressure in the carb itself to assist in starting. 



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