This is a freshly rebuilt 1968 QJ for a 400 ... 7048242 It was running fine for a while, but now is stalling then hard starting on me. I noticed "pooling" of gas on to top area of the acel. pump. Is the main gasket leaking ? what else would cause this gas leak ... and is this my problem ? here's a video I took trying to capture what is happening http://youtu.be/FxXgL-kuCTQ
Alan, that is probably due to the float level being a little high, or there could be small trash in the needle/seat to keep it from sealing. If you have a rubber fuel line, pinch it off when the engine is idling, and hold it pinched off until the engine dies. Then release the line and start it back up. The rush of the inflow could break up any stuff in the needle/seat. If this doesn't help, I would check float next.
If you do take the air horn off, I'd put the accel pump rod in the inner hole for a better pump shot.
Alan, Did Allstate rebuild that carburetor? If so, I'd take it back to him. If you remember, that's where gas was pooling on my Q-jet when I got stuck last year at the toll plaza. Allstate checked it and didn't find anything, but it hasn't done it since. Kind of strange, but I also had that problem with the Spectre RAM AIR air cleaner. Gas would pool there whenever I used that air cleaner. This happened before and after Allstate rebuilt my Osborn Q-jet. The carburetor wasn't flooding, but gas would collect there. I had no other symptoms beyond smelling gas while I was driving. I'd find gas collecting in that same spot, and it would drip down the corner of the carburetor, but cause no other symptoms. Never did figure that one out.
Yep, this is the allstate carb I had rebuilt when I took yours there. If he's open Sat, I'll take it there and show him what its doing. Thanks for the suggestions guys - Mark, its the stock hard line
another trick to "blowing out" the needle and seat is to use LOW pressure compressed air thru the fuel inlet to try to clear any obstruction
Back in the day, any time we changed a fuel filter in a carb we would pinch off the rubber hose on the SUCTION side of the fuel pump and then run the engine at about 2000 rpm until it quit. This usually cleared out any pesky floaters that were lurking.
