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So, having brought the car back out of hibernation ('84 Targa ROW) a week ago or so, I've noticed periodically that when I make a short stop (about 10 mins or so) the car periodically takes a fair number of engine rotations before starting. It does always start however. The car runs very well, and normally instantly starts. I replaced the reference and speed sensors about a month and a half ago, and have confirmed their resistance when the engine is both warm and cold, and they seem fine. I wonder if there could be a fuel delay or fuel vacuum issue whereby the pressure isn't held in the line sometimes?

Any ideas?

Thanks.