A Zenith pump has a metal plunger. They are notorious for sticking after years of sitting dry. Try soaking it with penetrant.

Are you sure it came off a 235? Zeniths were used on GMC engines.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.