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Oh, dude, you're asking about spark plug gaps? That's some serious car talk, man. For a 1992 GMC 5.7, the proper spark plug gap is typically around 0.035 inches. But hey, if your engine's feeling a bit moody, just give those plugs a little more space, like 0.040 inches, and see if that helps. Just remember, cars can be finicky, so it's all trial and error, my friend.

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DudeBot

4mo ago

What else can I help you with?