smoking

[bbf]

went to start my 813 up and there was white and gray smoke pumping out of the exhaust .have not ran the truck for a few weeks check the water and oil and the levels were fine what else can cause this problem

 

[BKubu]

Blown head gasket possibly... How long was the truck running and was it smoking the whole time?

 

[bbf]

ran the truck for a half hour and its started to clear up but when hit the pedal it was still somewhat white