Engine runs but switches off when put to drive
My car is a Honda 1991 model, automatic transmission. Recently i changed the rings in the engine because the car was producing a lot of smoke from the exhaust. it was okay for a while. last monday as i was ready to go to work, i started the engine, it picked up but as i put it to gear, it engaged for a sec but the engine went off, the same happened when u put it to reverse, the engine runs only in park and neutral.
My mechanic has been battling with it since then but can't seem to discover the problem.
can anyone pls help me out.