72 240 - Original engine I need some advice about a problem that has recently started with my Z. It starts fine with minimal choke and runs well (throttle response is very good) until after driving for about 30 minutes to an hour. Engine temp is still normal, but after turning off the engine it's hard to restart. Also it starts to stall and not pick up RPM's when applying throttle. When this happens if I pull the choke the engine runs well again and it makes the problem go away. But after using the choke to avoid the stall, it gets even worse. I don't have a lot of experience with the SU's. What do you guys think? Any help would be very appreciated.