intermittent miss ?

[george_01]

Any Ideas on what would cause an ocasional miss? It been doing it for about a month now. It hasn't got any worse. It runs good for 50 miles then misses for only 2-3 seconds. It does it so seldom I can't get a handle on what might be causing it. ANY IDEAS WOULD BE APPRECIATED!

[GMC Hauler]

Have you checked your lift pump pressure? That's a culprit sometimes, and an easy check.