Idling 20s, slight throttle, engine stopped.

[doletotodole]

It happened twice.
Wait a while, start the engine, I can feel difficulty in starting as usually start right way, but takes 3 cycles of ignition to start.

The cause? thank you.

[iceman]

I believe spark plug, valve clearances and fuel are usualy suspects.

[d1ckyh]

From past experience, an air leak can cause higher than normal idling and may contribute to starting issues.

[doletotodole]

thank you, gents above.