I just put new plugs in the wife's Beetle. The gap is.044 and it ran great after putting plugs in. Next morning it started with a stumble and died. Then started fine and ran great. It did the same thing after work. I started it this morning and it stumbled and died. Restarted it and it ran great. Took it for a short drive and was fine. Think the plug gap is the problem? Hot starts are fine.