Setting up new carb! first start? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67chevemall · 04-21-2005, 04:35 PM

Yello!
I have everything together for the first start of the season!

My ? is I have a rebuilt carb on there that is going to need setting up,
should I take the Ign. wire off the dizzy so it won't start to get
fuel to the bowls. Then set the bowls or just start it and set things up?

Cheers

Jason915 · 04-21-2005, 04:56 PM

the bowl will fill up fast enough just crank on it and pump it a few times while cranking.

**COBALT** · 04-21-2005, 06:01 PM

What kind of carb is it?

Bolt it on, set up the vacuum lines, give the accel pump a couple of pulls until gas starts comming out of the jets under the venturis, and fire it up.

Done.

After that it's just a function of adjusting idle, mixture screws, accel arm, etc. You also may have to check for leaks around any mating surface (carb-to-intake, airhorn assembly, fuel leaks, vacuum lines, etc.).

If you're one of the unlucky ones who has a fuel pump that isn't putting out the pressure the carb wants it could cause problems, but don't worry about that until you're forced to deal with it. Some mechanical fuel pumps overwhelm the floats and you can flood your truck.

67chevemall · 04-21-2005, 11:16 PM

Some mechanical fuel pumps overwhelm the floats and you can flood your truck

thats what was happening to my temp. carb among other things. Now I have
a fuel reg. and fuel psi gauge with the old rebuilt holley back on. Everything helps.

sargentjones · 04-25-2005, 10:12 AM

jUST PUMP N START. nOTHIN TO IT..CHA BAM!

67chevemall · 04-25-2005, 10:36 AM

Sargent I tryied that but can't stop the fuel from pouring into the carb
The pri. bowl is set good but the sec. bowl seems to just keep on pouring.

04-21-2005, 04:35 PM	#1
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Setting up new carb! first start? Yello! I have everything together for the first start of the season! My ? is I have a rebuilt carb on there that is going to need setting up, should I take the Ign. wire off the dizzy so it won't start to get fuel to the bowls. Then set the bowls or just start it and set things up? Cheers __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

04-21-2005, 04:56 PM	#2
Jason915 Registered User Join Date: Jan 2005 Location: Colorado Springs Posts: 693	the bowl will fill up fast enough just crank on it and pump it a few times while cranking. __________________ 1971 GMC K1500 SWB Fleetside, 4" skyjacker softride and, 14 Bolt FF, HD Dana 44 4.10's 1970 K5 TBI conversion lifted etc SOLD 1968 C20 camper truck SOLD “To ban guns because criminals use them is to tell the innocent and law-abiding that their rights and liberties depend not on their own conduct, but on the conduct of the guilty and the lawless.” Jeff Snyder

04-21-2005, 06:01 PM	#3
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	What kind of carb is it? Bolt it on, set up the vacuum lines, give the accel pump a couple of pulls until gas starts comming out of the jets under the venturis, and fire it up. Done. After that it's just a function of adjusting idle, mixture screws, accel arm, etc. You also may have to check for leaks around any mating surface (carb-to-intake, airhorn assembly, fuel leaks, vacuum lines, etc.). If you're one of the unlucky ones who has a fuel pump that isn't putting out the pressure the carb wants it could cause problems, but don't worry about that until you're forced to deal with it. Some mechanical fuel pumps overwhelm the floats and you can flood your truck. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. Last edited by COBALT; 04-21-2005 at 06:02 PM.

04-25-2005, 10:12 AM	#5
sargentjones BOLT SMASHER Join Date: Jan 2005 Location: St.Catharines Posts: 51	jUST PUMP N START. nOTHIN TO IT..CHA BAM! __________________ Jeff 73 Chevy C-10 350 4-Speed RUST DON'T WAIT FOR NO ONE...... Last edited by sargentjones; 04-25-2005 at 10:13 AM.

04-25-2005, 10:36 AM	#6
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Sargent I tryied that but can't stop the fuel from pouring into the carb The pri. bowl is set good but the sec. bowl seems to just keep on pouring. __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

04-21-2005, 11:16 PM	#4
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Some mechanical fuel pumps overwhelm the floats and you can flood your truck thats what was happening to my temp. carb among other things. Now I have a fuel reg. and fuel psi gauge with the old rebuilt holley back on. Everything helps.

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