Have 67 El Camino w/basically stock 327/275 - now has Edelbrock intake and AFB-style carb (1404 I think). Recently the engine won't start if it has been sitting for 6-8 hrs or more. Engine turns over fine but won't start. If I prime the carb a bit, it starts fine and will start again at first touch of the key as long as it hasn't sit for 6-8 hrs. Carb & intake have been on the car for a few years with no problems.
Started acting up this summer with being hard to start when cold (well, not cold
but after sitting overnight) but it'd eventually start. Now it won't start unless the carb is primed.
Here are a few things I tried:
Replaced old inline fuel filter (see-through type). It looked dirty but seemed to retail fuel in the bowl.
Car only had a couple of gallons of gas in it so I just filled it up thinking maybe old/bad gas or pump not pulling from low tank was the problem - no change.
Timing set correctly for 327/PG - 8 BTDC.
Should I be able to see gas going into carb when engine is off and working the throttle? I know I could with a Holley but can't see any with the Edelbrock. IT doesn't smell like it's flooding when it doesn't start, can't remember smelling anything out of the ordinary at all in fact.
Ideas? I'm stumped...