<VV> fuel pump issue

[Garry Parsley]

Hey gang,

After 8 months of work I’m finally at the start it and adjust stage on my 66 Monza, but am still having an issue. When I put a little gas in each carb, it fires right up, then dies. A definite lack of fuel issue. The original pump was leaking, so I ordered a new one. While waiting for it, I read the tech guide articles about the wrong length stem coming out of the pump on the newer versions.  The original pump was 1/4” long, so I checked the push rod. It wouldn’t come out, so I ended up removing the rear housing, and found the end of the rod mangled. The “too long” shaft now made sense. Have now replaced the sending unit, hoses, fuel pump, push rod, eccentric. The new pump’s shaft was 9/32” long, so I cut it down to 7/32” but it hasn’t helped. I’ve verified fuel to the pump, but when I crack the lines at the carbs and crank it – dry. My question is – is it possible the rod in the pump is still too long at 7/32” sticking out? Could this be keeping the diaphragms from doing their job?  I didn’t want to risk cutting too much off, but will listen to all suggestions. I fear I may have tunnel-vision at this point, and would appreciate some input.

Garry parsley