Got a 91 hatch ka24de changed the spark plugs and wire a month ago and drove it around twice but it started misfiring at idle today. Pulled the plugs while car idling seems like cylinder 3. Gapped and torqued to spec. Anyone run into this issue? Is it injectors? Also washed the engine bay could it be the cap and rotor got corroded?

 

Moisture could have gotten in the cap if you didn't cover the rotor when you washed the engine. Have you checked the timing? Checked for any codes?

 

I changed the cap and rotor last week and it’s still misfiring. Change the wires to see if they were bad but still misfiring.

 

did you ever figure it out

 

did you ever figure it out

Checked voltage on all injectors turns out one was bad so changed that and runs fine now.