Carb rebuild - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevychic · 01-07-2003, 03:30 AM

Well I did it. I rebuilt my q-jet this weekend.
I ran into a couple of snags, but was able to get everything working great tonight (of course I had a little help...right Mike?)

Man, what an awesome feeling to take something totally apart, have no clue what you're doing and reassemble it and have it work!!

I learned quite a bit from this and best of all I got to see the inside of the carb and see how it all worked. I was able to find another Q-jet at the junk yard so that's going to be my practice carb if I get daring enough to do any modifications.

For those that say Q-jets are a pain, maybe they are at times, but I think I'm sticking with mine. There's so much that can be done with them and more than enough info available to teach you how....and if I can do this, anyone can.

I have some minor adjustments I need to make tomorrow in the daylight. (I was outside under a lamp at 8 PM tonight just to get the inline fuel filter and carb installed)

Everytime I work on my truck I discover something new. This time it was the lack of a fuel filter whatsoever. I installed an inline fuel filter and I'm not sure if it's that or the carb rebuild, but the truck just seems to run and idle so much smoother.

I can't wait to get everything adjusted just right and see how it runs.

79BIG10 · 01-07-2003, 04:18 AM

Glad to hear it went well for you Heather. One word of advice is to flare the end of the pipe comong out of the carb fuel inlet incase your using a new piece.

scalawag · 01-07-2003, 07:20 AM

i am workin on mine too. i got an intake and a 800cfm carter built q-jet. i am going to have to get it rebushed. it has a little more play than i like. i have gotten to where i can take mine apart and put it together in about 4 minutes. they arent hard at all. i found out how to unwarp the airhorn. noching the flaps, that the idle tubes arnt needed, cause they're too small. keep everything stock and work up from there.

the q-jet is a wonderful carb. its tuneability is unmatched.

enjoy!!

BigRed · 01-07-2003, 09:53 AM

Cool! Thtat's one of those things that builds your confidence! Carbs can be so intimidating. I'm going to try and mod my Holley here soon and that makes me very nervous.

J-Spec C10 · 01-07-2003, 01:41 PM

I just rebuilt my quadrajet last week, other than extensive cleaning, I found it to be rather straight forward too. The adjustments are what take for ever. It has more power and drivibility now than since I bought the truck.

**swervin ervin** · 01-07-2003, 04:41 PM

Way to go. Was the problem the needle?

I knew you could do it. Pretty simple now that you're done, right?

chevychic · 01-07-2003, 08:17 PM

Yep. I'm 98% sure it was the needle. The other 2% could've been the gas spraying up through the split in the fuel line that could've been made when I was first getting the carb off and I didn't notice. However, I don't think the gas would've sprayed like that and I would've seen more gas on the intake and valve covers than I saw. I'm pretty sure it was the needle.

It was very simple. I'm glad I did it.

pkbinplano · 01-09-2003, 10:08 PM

Bought two from ebay to tinker with. Don't want to jack with the one I have on the truck now.

01-07-2003, 03:30 AM	#1
chevychic Registered User Join Date: Oct 2002 Location: Chanhassen, MN Posts: 1,061	Carb rebuild Well I did it. I rebuilt my q-jet this weekend. I ran into a couple of snags, but was able to get everything working great tonight (of course I had a little help...right Mike?) Man, what an awesome feeling to take something totally apart, have no clue what you're doing and reassemble it and have it work!! I learned quite a bit from this and best of all I got to see the inside of the carb and see how it all worked. I was able to find another Q-jet at the junk yard so that's going to be my practice carb if I get daring enough to do any modifications. For those that say Q-jets are a pain, maybe they are at times, but I think I'm sticking with mine. There's so much that can be done with them and more than enough info available to teach you how....and if I can do this, anyone can. I have some minor adjustments I need to make tomorrow in the daylight. (I was outside under a lamp at 8 PM tonight just to get the inline fuel filter and carb installed) Everytime I work on my truck I discover something new. This time it was the lack of a fuel filter whatsoever. I installed an inline fuel filter and I'm not sure if it's that or the carb rebuild, but the truck just seems to run and idle so much smoother. I can't wait to get everything adjusted just right and see how it runs. __________________ *ChevyChic* 86 Chevy K-10 If I can't be a good example, then I'll just have to be a horrible warning. "You're braver than you believe, and stronger than you seem, and smarter than you think" - Christopher Robin

01-07-2003, 04:18 AM	#2
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	Glad to hear it went well for you Heather. One word of advice is to flare the end of the pipe comong out of the carb fuel inlet incase your using a new piece. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

01-07-2003, 07:20 AM	#3
scalawag Registered User Join Date: Aug 2002 Location: caledonia ms Posts: 260	i hear ya i am workin on mine too. i got an intake and a 800cfm carter built q-jet. i am going to have to get it rebushed. it has a little more play than i like. i have gotten to where i can take mine apart and put it together in about 4 minutes. they arent hard at all. i found out how to unwarp the airhorn. noching the flaps, that the idle tubes arnt needed, cause they're too small. keep everything stock and work up from there. the q-jet is a wonderful carb. its tuneability is unmatched. enjoy!!

01-07-2003, 09:53 AM	#4
BigRed Registered User Join Date: Jun 2002 Location: DFW, TX Posts: 1,680	Cool! Thtat's one of those things that builds your confidence! Carbs can be so intimidating. I'm going to try and mod my Holley here soon and that makes me very nervous. __________________ Scott Shelbourne

01-07-2003, 01:41 PM	#5
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	I just rebuilt my quadrajet last week, other than extensive cleaning, I found it to be rather straight forward too. The adjustments are what take for ever. It has more power and drivibility now than since I bought the truck. __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

01-07-2003, 04:41 PM	#6
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Way to go. Was the problem the needle? I knew you could do it. Pretty simple now that you're done, right? __________________ Mike 1985 Chevy C-10

01-07-2003, 08:17 PM	#7
chevychic Registered User Join Date: Oct 2002 Location: Chanhassen, MN Posts: 1,061	Yep. I'm 98% sure it was the needle. The other 2% could've been the gas spraying up through the split in the fuel line that could've been made when I was first getting the carb off and I didn't notice. However, I don't think the gas would've sprayed like that and I would've seen more gas on the intake and valve covers than I saw. I'm pretty sure it was the needle. It was very simple. I'm glad I did it. __________________ *ChevyChic* 86 Chevy K-10 If I can't be a good example, then I'll just have to be a horrible warning. "You're braver than you believe, and stronger than you seem, and smarter than you think" - Christopher Robin

01-09-2003, 10:08 PM	#8
pkbinplano pkbinplano Join Date: Nov 2002 Location: Plano Texas Posts: 370	Bought two from ebay to tinker with. Don't want to jack with the one I have on the truck now. __________________ http://www.picturetrail.com/gallery/...7496&members=1 84 chevy silverado aka The Bananna Boat



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