Inliners International Forums General Discussion Engines Pontiac OHC Intake on an inline 250

Good point, the PV may be gone.
However, this doesn't equate to the choke use. A ruptured PV feeds fuel all the time (but cannot feed air, since it's submerged below the float level), and would run rich with the choke off, and eventual stalling would be due to fouled plugs.