The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

ChevLoRay · 06-26-2004, 01:14 PM

Ooooh, I love my Q-Jet.....much better than my old Edelbrock 1405 (like an AFB).

When Q-Jets sit, beside the previously mentioned varnish buildup, and the "drying out" that occurs, they just don't like it.

Accelerator pumps dry out. They can be replaced. Just take the top of the carb off and it will be easily replace.

There are two plugs in the base of the body of the carburetor. These have been known to leak. There are repair kits to correct this. The good ones include new plugs with o-rings and a hard foam piece that fits in the well of the base and holds the plugs in position.

If there is wear in the base plate, air can leak (ever so slightly) but fuel that is leaking from those two plugs I mentioned, will leak out of the throttle plate shaft bore.

You should be able to replace the pump and the plugs without making any adjustments to the float level. Be sure that you get everything back in the right place (this is a gross understatement).

06-26-2004, 01:14 PM	#4
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Ooooh, I love my Q-Jet.....much better than my old Edelbrock 1405 (like an AFB). When Q-Jets sit, beside the previously mentioned varnish buildup, and the "drying out" that occurs, they just don't like it. Accelerator pumps dry out. They can be replaced. Just take the top of the carb off and it will be easily replace. There are two plugs in the base of the body of the carburetor. These have been known to leak. There are repair kits to correct this. The good ones include new plugs with o-rings and a hard foam piece that fits in the well of the base and holds the plugs in position. If there is wear in the base plate, air can leak (ever so slightly) but fuel that is leaking from those two plugs I mentioned, will leak out of the throttle plate shaft bore. You should be able to replace the pump and the plugs without making any adjustments to the float level. Be sure that you get everything back in the right place (this is a gross understatement). __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.