Acceleration and Stalling Problem 72 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ncpetersc · 07-03-2018, 02:57 PM

Subscribing to this, as I feel I've had similar experiences. My opinion is worth next to nothing, but the first thing I thought was not firing on all 8 as others have suggested.

My truck is the same year, and I am pretty sure my fuel tank is gunked up. I have a quadrajet and the filter in the carb inlet had rust colored debris in it.

GOOD LUCK!

geezer#99 · 07-03-2018, 04:05 PM

Quote:

Originally Posted by ncpetersc

Subscribing to this, as I feel I've had similar experiences. My opinion is worth next to nothing, but the first thing I thought was not firing on all 8 as others have suggested.

My truck is the same year, and I am pretty sure my fuel tank is gunked up. I have a quadrajet and the filter in the carb inlet had rust colored debris in it.

GOOD LUCK!

Did your filter look like this?
If so, likely nothing wrong with it.
https://quadrajetparts.com/sintered-...lter-p-80.html

ncpetersc · 07-10-2018, 09:18 PM

Quote:

Originally Posted by geezer#99

Did your filter look like this?
If so, likely nothing wrong with it.
https://quadrajetparts.com/sintered-...lter-p-80.html

It definitely wasn't the bronze type.. it looked more like this

https://quadrajetparts.com/short-pap...lter-p-78.html

**Stocker** · 07-11-2018, 01:02 AM

Quote:

Originally Posted by ncpetersc

It definitely wasn't the bronze type.. it looked more like this

https://quadrajetparts.com/short-pap...lter-p-78.html

I recently had one of those completely plug up (age? fuel? beats me). I had installed it when I couldn't find a bronze one.
Now I'm back to a bronze filter and I will never buy another pleated paper filter for my Q-jet.

Thatguywithaneye · 07-25-2018, 01:35 AM

Update:

Turns out it was a mixture of a few things.
1)Did an HEI Conversion because the points looked terrible
2)Had the carb rebuilt (super dirty and gummy)
3)The gas was so bad it was terrible so currently trying to dilute the old stuff with some fresh stuff.

A combination of these makes the truck start and run like its 1972. Never really realized how much power it had until it was all fixed.

Next step...wiring

Thanks for everyone's help and suggestions.

07-03-2018, 02:57 PM	#1
ncpetersc Registered User Join Date: Jun 2018 Location: Fuquay-Varina, NC (Just outside of Raleigh) Posts: 237	Re: Acceleration and Stalling Problem 72 GMC Subscribing to this, as I feel I've had similar experiences. My opinion is worth next to nothing, but the first thing I thought was not firing on all 8 as others have suggested. My truck is the same year, and I am pretty sure my fuel tank is gunked up. I have a quadrajet and the filter in the carb inlet had rust colored debris in it. GOOD LUCK!

07-25-2018, 01:35 AM	#5
Thatguywithaneye Registered User Join Date: Oct 2017 Location: Kamloops BC, Canada Posts: 20	Re: Acceleration and Stalling Problem 72 GMC Update: Turns out it was a mixture of a few things. 1)Did an HEI Conversion because the points looked terrible 2)Had the carb rebuilt (super dirty and gummy) 3)The gas was so bad it was terrible so currently trying to dilute the old stuff with some fresh stuff. A combination of these makes the truck start and run like its 1972. Never really realized how much power it had until it was all fixed. Next step...wiring Thanks for everyone's help and suggestions.



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