This was one of the few spec scripts ever bought by the producers. The writer, Peter Felardi, went on to write Flatliners (1990).
Don S. Davis (Wyatt Porter) and Robin Mossley (Earl) would both later appear with Richard Dean Anderson in Stargate SG-1 (1997): Davis played the regular character General George Hammond while Mossley played Malikai in Window of Opportunity (2000).
Macgyver removes the distributor cap to prevent the poachers from fleeing in their truck. A better way to have sabotaged the truck would have been to simply remove the rotor inside the distributor cap, and then replace distributor cap as if it hadn't been touched. This would have the same effect as removing the cap itself (as the rotor spinning around inside the cap is what causes spark at each point on the distributor) without the sabotage being immediately obvious when looking at the engine. It would also have saved him the time required to remove all of the spark plug wires from the distributor cap.