'77 280Z, stock injectors (recently cleaned and flow-matched, two were replaced) on stock fuel rail. MSA 6-1 header with stock heat shield. I drove it daily until I was out of the area for pretty much all of 2013 without a problem. Came back in November and went right back to it with no issue whatsoever. It sat parked since March and I just drove my truck but now that the weather is nice (and hot...) I decided to bring out the Z. Ran it for a while and took it around the block to make sure it was ready for the commute. Ate dinner and went out to start it back up and nothing. Hot weather? Maybe. I didn't try the usual starter disconnect/run the pump trick because I was... disappointed. That worked for me in the past (I feel your pain, rossiz, and I was also thinking about a toggle switch for this purpose). I will tinker with injector fans and see if that helps.