Help running on 4 cyl

[92mintzx]

I had a rough idle on my car so I cleaned the aic valve with wd-40. It seemed to work. A couple of hours later I took my car for a ride and it was stumbling. I unplugged the coils with the car running and found two cyl made no change. I swapped around coils and plugs and still the same two cyl were dead. I thing maybe two injectors died. One cyl in back on pass side and one cyl in front on drv side. Are they useing the same circuit for the injectors? Why would two injectors just die?

[izmyttz]

could be that the plugs on the harness aren't connecting to the coil packs well enough..that's why i changed out my harness the other day..i had to use zip ties to keep the old ones on ...they tend to come loose when you drive the car

[92mintzx]

Thanks for the input. But I had a mechanic confirm that it's injectors. Intake plenum has to come off for injectors. WTF! Bad design.

[izmyttz]

wow have fun with that..they aren't cheap....i'd replace them all if you're going to replace one or two of them...unless you plan on upgrading them later

[ghostinator (fl)]

Check first if the injector connectors are corroded, if they arn't the injectors won't fire and won't work. IT's happeend to me before.