when I crank my pickup it makes arattling noise only for few seconds and quits. on 1991 Nissan Pickup (D21)

Pops out of gear no power

1 answer
If it makes a rattling sound when it initially starts up after a cold start it may be a sign of bad connecting rod bearings in the engine or maybe less important a rattling exhaust heat shield or exhaust component.Pops out of gear could be shift linkage issue but more than likely an internal gearbox problem.