1992 Mazda b2200 white smoke cumming from exaust pipe, a lo

Get it block and pressure tested to rule out a blown headgasket, cracked head/block.

it could be that your oil rings need to be replaced, this will cause the oil to burn up, which will be why you are seeing white smoke coming out of the exhaust. i have this problem also, what does the motor sound like when you crank it up?

White smoke indicates coolant is being burn in the combustion chamber- or from a transmission vacuum modulator that's leaking into the intake if it has this type of tranny and also being burn.