[Christien]

I know vapor lock has been discussed at great lengths on this board, so bear with me :-) After driving (city) for about 30 minutes constantly, I stopped to run into the post office, in there maybe 5-10 minutes, came back out to the car, and it wouldn't start. It was turning over no problem, sounding regular, but just wouldn't fire. My initial thought was vapor lock, so I just sat and waited, trying to start it every 2 minutes or so. After about 10 minutes, vroom, starts up perfectly. Ok, still sounds like a vapor lock issue. What's unusual is that the ambient air temperature today was about 8C (45F). Oil temperature was perfectly normal when I'd been driving around. On the weekend I installed a Carter 4070 fuel pump, mounted just outside and a little up from where the standard fuel pump mount is (just in front of the right rear wheel) and it occurred to me that this might be a little more susceptible to heat from the engine or heat exchangers.

I've searched and read tons on vapor lock, fuel accumulators, check valves, etc. but I'm confused over what info and parts pertains to carbureted engines/MFI/CIS. I'm running Zenith carbs. I'm going to put the proper fuel pump in there as soon as I find/order one, so if this is just a case of "let it cool down" I can deal with it for a week or 2. Maybe a temporary solution would just be some kind of insulation around the pump?

Thanks,
Chris