good day. My 2002 Odyssey with 172K miles has been most reliable. Having intermittent problem for last three weeks. When I start the van, it cranks vigorously but does not fire. So I turn off the ignition and when I turn key again, it immediately fires and runs perfectly thereafter. There are no misfires or hesitation once it starts. Van runs absolutely smoothly with no loss of power. This lack of firing has been happening only intermittently and infrequently. Most of the time it starts just fine. Any suggestions would be much appreciated. thanks in advance.