Running extremely rich - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ogre · 08-15-2003, 05:39 AM

I didn't notice it the first time I had my vacuum hoses all fixed, but the truck is running very very rich.

(probably because it was 95-105 degrees when I got it all done)

The past few days have been mild -- mid 80's, and my idle has been waaaaaay down (I don't have a tach... ear sez about 750 rpm).

Last night I was helping a friend move stuff (again...I guess I look like a pack mule...) and the exhaust was so rich, that I couldn't sit on the tailgate for more than about 3 minutes before my eyes were watering and I was getting the gas high from all the fumes coming off...

I have a bone-stock setup right now, and would appreciate any advice on tuning the Q-Jet, as well as the idle speed.

Thanks!

crackajacka · 08-15-2003, 01:48 PM

theres 2 adjustment screws at the base of the carb at the front one on the left corner and one on the right corner i think they are fuel n air but mine idles different when i adjust them. my uncle says that if u screw them all the way in and the unscrew them like 4 or so times each thats stock but i dont know hes full of it. thought it might help u.

crackajacka · 08-15-2003, 01:49 PM

o btw i forgot to mention you'll need to go get a carb adjustment tool, its just a long screwdriver thats a big spring and is interchangable on the end, mine was like 9 bucks or something.

Ogre · 08-15-2003, 07:48 PM

cool.. does anyone have any pix on a stock Q-Jet for an 86 that I might be able to check out?

I have Chilton's guide.. but IMHE it usually isn't much help...

crackajacka · 08-16-2003, 01:49 AM

ill try to get out n take a pic tomorrow since ive got an 86 gmc with a q-jet on a 305

crackajacka · 08-16-2003, 11:19 AM

heres the drivers side view of the hole

crackajacka · 08-16-2003, 11:20 AM

passenger side, cant see the hole very good but if u look close u can see the top half of it

crackajacka · 08-16-2003, 11:21 AM

just thought this one would be fun, sry i got excited when i fired it up this morning and it reminded me why im not driving it and it makes me sad

08-15-2003, 05:39 AM	#1
Ogre Registered User Join Date: Jul 2003 Location: Bryan, TX Posts: 32	Running extremely rich I didn't notice it the first time I had my vacuum hoses all fixed, but the truck is running very very rich. (probably because it was 95-105 degrees when I got it all done) The past few days have been mild -- mid 80's, and my idle has been waaaaaay down (I don't have a tach... ear sez about 750 rpm). Last night I was helping a friend move stuff (again...I guess I look like a pack mule...) and the exhaust was so rich, that I couldn't sit on the tailgate for more than about 3 minutes before my eyes were watering and I was getting the gas high from all the fumes coming off... I have a bone-stock setup right now, and would appreciate any advice on tuning the Q-Jet, as well as the idle speed. Thanks! __________________ 1986 GMC Suburban "Bertha the Big Blue *****"

08-15-2003, 01:48 PM	#2
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	theres 2 adjustment screws at the base of the carb at the front one on the left corner and one on the right corner i think they are fuel n air but mine idles different when i adjust them. my uncle says that if u screw them all the way in and the unscrew them like 4 or so times each thats stock but i dont know hes full of it. thought it might help u. __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-15-2003, 01:49 PM	#3
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	o btw i forgot to mention you'll need to go get a carb adjustment tool, its just a long screwdriver thats a big spring and is interchangable on the end, mine was like 9 bucks or something. __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-15-2003, 07:48 PM	#4
Ogre Registered User Join Date: Jul 2003 Location: Bryan, TX Posts: 32	cool.. does anyone have any pix on a stock Q-Jet for an 86 that I might be able to check out? I have Chilton's guide.. but IMHE it usually isn't much help... __________________ 1986 GMC Suburban "Bertha the Big Blue *****"

08-16-2003, 01:49 AM	#5
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	ill try to get out n take a pic tomorrow since ive got an 86 gmc with a q-jet on a 305 __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-16-2003, 11:19 AM	#6
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	heres the drivers side view of the hole Attached Images __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-16-2003, 11:20 AM	#7
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	passenger side, cant see the hole very good but if u look close u can see the top half of it Attached Images __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-16-2003, 11:21 AM	#8
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	just thought this one would be fun, sry i got excited when i fired it up this morning and it reminded me why im not driving it and it makes me sad Attached Images __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

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