I have a 2007 Odyssey on my back. This engine will misfire #5 for maybe 5-10 seconds - maybe - then run properly. no other significant misfires. new plugs, swapped coils, new #5/#6 injectors, valves adjusted. No EGR problems. what am I missing??? GGGrrrrrrrr

 

Both the injectors and coils are fed a constant battery voltage. The ECU toggles the ground. With a volt meter connected to the B+ side of your injector connector, wiggle the wires around and see if there is a glitch. Repeat for the coil connector. Though rare, I have seen instances of poor solders in these areas. It could also be the female spade at the connector is spread too far apart (I can hear wandering thoughts out there). Check them as well.

Mike