ROBOGOKU

Hi all,

My 2011 Scion tC has been giving a misfire on Cylinder 1 both on idle and when driving. Things we've tired so far:

Change fuel injector
Change all spark plugs
Swap out coil pack with 2013 model pack
Check MAF
Check O2 Sensor
compression test.

However the problem persists. Thinking of getting a new set of coil packs as the set that was swapped from the 2013 model may have been weak.
Any suggestions?

Thanks

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