At my work we have a hyster s50xl from the 80's. We have certified technician come in usually when we need repairs. The last time the tech came in he replaced the distributor cap, rotor, plugs and wires, and "fuel condenser"? Also it sometimes cuts out really bad when you hit the gad to go up our ramp and it barely moves, you could basically walk up the ramp faster than it would go. Thoughts? Thanks!