1990 Mazda b2600i 4x4 white smoke.

Its has got 166,093 miles on it. it does burn oil and the smokes white, not blue. I do have a small exhaust leak just under the manifold and im loosing coolant... My thoughts are inspecting the head, change head gasket. and piston rings. I think that will fix it to where i dont have 100+ Ft of smoke blinding everyone driving... Im 17 Years old and this is my first truck. and id like to keep it up to use it as a hunting truck or bad weather vehicle. Thanks in Advance

Yes, change the head gasket, change the oil, do it soon.

If you were also burning oil I'd say get the head re-done and piston rings too. B2600i engines are very senstive to running hot and causing head gasket issues and/or head warpage, so hopefully you will get to yours in time.

If it did run hot, investigate why.

It did run hot once. i was driving home from school and blew a hole in a hose when i have to gear down several times to avoid hitting someone who pulled out in front of me. thats the only time in my ownership it ran hot... can you give me and estimated priceit would be to have all of that done? im currently umemployed and receive no financial help from my friends or family.

On my B2200, I had the head re-done and installed new pistons, rings, and connecting rod bearings. I had done my water pump (and timing belt, which you don't have) a few months earlier. My out-of-pocket costs were $700, took me a few days (Fall 2011).

yeah, i dont have a timeing belt. its a chain. And thanks i had a guy quote me 800 for the headgasket and piston rings... id like to do it myself but i dont really trust myself doing it without breaking something else... i looked online and a new head is $750.and the rings and gaskets would put me at about $1002 for the three. not counting haveing someone do them if i choose to go that way.