2005 gmc canyon just started blowing smoke out tail pipe

2005 gmc canyon just started blowing smoke out tail pipe but it doesn't do it every time i start it. is this bad



It just started its only happened twice blowing smoke out the tail pipe, its not getting hot or using oil or missing just when i started it it had smoke coming from tail pipe.


Possibly a leak in the head gasket. Take out the plugs and see if they are water wet. Run a compression check.

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