Rustproof, This is a long shot, but make sure no one has hot wired or put in a permanent hot start relay. Also, as you may know the Thermo time switch activates the solenoid in the cold start valve. The thermo time switch should open when it warms up. If these are OK, then I would work on adjusting the Air flow meter valve. Gas has to come thru the control plunger to get to the injectors. Are they open to much? John http://www.specialtauto.com/fuelsystems.shtml