When it is damp out there are times when my 1989 Honda Accord LXI (fuel injected) will not start. It is not the fuel pump relay as I hear the pump kick in and run. It is intermittent so if I just let it sit it may start the next time. Happens only a couple times a year. Once in a while I notice an engine stumble while idling that seems like a cutout. Engine shutdown once in traffic, restarted in 5 minutes. Any ideas (other then fuel relay)?