Seems like it has to crank longer than it used to. Once it starts, it runs good. Yesterday, it took about 5 or 6 seconds to turn over. I took it driving, shut it down for a few mins and after that it was no problem. But it has done this a few times now. Spark plugs ( NGK Irridium or some other 100K plug) has 70 K on the set) Air filter gets changed regularly. I use gasoline from reputable vendors. I'm open to suggestions for where to start looking. Throttle body? Fuel pump? Seems to be more of a fuel problem than igntion. Thank, gents.