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2006 Mitsubishi Endeavor

My car had some knocking for maybe 6 months when I would accelerate. Today it started then cut off. I restarted it step on the gas now I have thick white smoke coming from the exhaust pipe. Previously when I thought it was a head gasket issues , I went in for a oil change they said no it was not a head gasket problem. I am $300 bucks from paying the car off. Please tell me what this is.


"Please tell me what this is.“
It Could Be The The Result Of
"My car had some knocking for maybe 6 months when I would accelerate.”

Knowing what had been knocking for 6 months possibly would have shed some light on the thick white smoke problem. Find out what is/was knocking.

CSA