I posted this in other forums but no one answered and since i have an itr and you guys are the bomb i thought id ask you all. We were in my friends 98 gsr and the car starts sputtering pretty bad when you give it gas. we let it sit overnight and the next day the check enigine light was on code 73, cylinder 3 misfire but the car ran fine no more sputtering.

We then changed the wires and plugs and reset the light and it went off for 4 days but now its back on. the car hasnt sputtered since the first night and the car runs real well. all i can think is maybe injector 3 a lil dirty? we threw in some injector cleaner and a full tank of 93 octane and see how that works. let me know what you think

 

Check your cap and rotor as well...