When the goons follow Smith to the cemetery, they are in an Oldsmobile. When they leave the cemetery following MacGyver and Terry, they're in a Ford.
A string can be seen in the knife thrown at MacGyver when the knife hits the mallet.
When MacGyver takes Piedra's watch is shows 1:22 and MacGyver comments the time shown is 1:22am before taking the back off and showing there is no watch movement inside and the front is just a fake display. Moments later on the phone, when Smith asks for the time as a security question, MacGyver looks at the watch again and says "Yes, 1:24am". With no movement the watch should have perpetually displayed 1:22.
Mac is on the phone to Pete. He hands the phone to Terry and asks her to fill him in on what is happening. Mac rushes off. All Terry does is tell Pete to "please hurry" and hangs up.