Help Mazda1986 B2000

Help Mazda 86 B2000 Truck Exesive consumption of fuel and white smoke

with compression in silhindros 1,2 and 3 of 60 and 4 of 30 psi with carburetor
yet I do not know what mptor bring

You have the compression of cylinder 4 very bad, check wear on rings and cylinder, also test valves or cylinder heads,
white smoke can be water in combustion, so it also check your cylinder head packing.
luck

Ok thanks Guillermo

In fact, comprehensive is not good in any cylinder but 4 is disastrous, it gives thanks that lights hahaha, the white smoke is the presence of water in the combustion, it has the whole face of having problems of cylinder head, but the consumption of high combustuble has to do directly with the engine state that you would make an ultra engine adjustment recommended, but check the regulation of valve that directly affects that it directly affects it.