The Ford Barn

son of 19 · 07-18-2011, 12:24 PM

Can anyone tell me if my carb is working the it should? when driving my Gav runs good at 3/4 open but at idle it runs better at 1/4. it's a 1930 briggs with a Zenith # 2. thanks

Jack '29 Sport Coupe · 07-18-2011, 03:26 PM

If everything is working correctly, 3/4" open on the GAV is a "tad" rich. Normal should be about 1/8 to 1/4" and when cold at start should be about 1/2" open until warmed up. Once warmed up, you should be able to lean it back to the 1/8" to 1/4." Of course, all A's have their individual sweet spot. If your car runs smooth and gets decent mileage, I wouldn't worry too much about it. Check your plugs to see if you are running too lean or too rich and adjust your GAV accordingly, JMHO.

Jack

jkcrosson · 07-18-2011, 06:53 PM

Mine seems to run better about 1/2 open. At slow speeds, I can turn it down to 1/8 to 1/4 but it's lean when accelerating. I've never known if there was an exact science to the GAV because at the end of the day, we are dealing with an 80+ year old car.

son of 19 · 07-19-2011, 11:21 AM

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Thanks" everone I thank I will try another carb and see what happens.it's all fun.

07-18-2011, 12:24 PM	#1
son of 19 Junior Member Join Date: May 2010 Posts: 22	Gav??????? Can anyone tell me if my carb is working the it should? when driving my Gav runs good at 3/4 open but at idle it runs better at 1/4. it's a 1930 briggs with a Zenith # 2. thanks

07-18-2011, 03:26 PM	#2
Jack '29 Sport Coupe Senior Member Join Date: May 2010 Location: Cincinnati, Ohio Posts: 798	Re: Gav??????? If everything is working correctly, 3/4" open on the GAV is a "tad" rich. Normal should be about 1/8 to 1/4" and when cold at start should be about 1/2" open until warmed up. Once warmed up, you should be able to lean it back to the 1/8" to 1/4." Of course, all A's have their individual sweet spot. If your car runs smooth and gets decent mileage, I wouldn't worry too much about it. Check your plugs to see if you are running too lean or too rich and adjust your GAV accordingly, JMHO. Jack __________________ Cincinnati, Ohio

07-18-2011, 06:53 PM	#3
jkcrosson Senior Member Join Date: Jan 2011 Location: Pell City AL Posts: 720	Re: Gav??????? Mine seems to run better about 1/2 open. At slow speeds, I can turn it down to 1/8 to 1/4 but it's lean when accelerating. I've never known if there was an exact science to the GAV because at the end of the day, we are dealing with an 80+ year old car. __________________ Jamie Crosson 1929 Tudor Looking for an Original 888 Key

07-19-2011, 11:21 AM	#4
son of 19 Junior Member Join Date: May 2010 Posts: 22	Re: Gav??????? Sponsored Links (Register now to hide all advertisements) Thanks" everone I thank I will try another carb and see what happens.it's all fun.