That's a good place to start.
While you are there, check the other end of the plug wires.
My brothers '90 pickup was doing the hesitating thing, his were showing corrosion on a couple of the plug wires connected to the plugs.

Todd


1986 Pickup extracab longbed "Woody edition"
SAS - 33's, 5.29's, lockright rear.

02 IS300 SportCross - my "DD"
94 2wd v6 extracab
04 Outback Wagon- wife's/family car