help:misfire issues

[oldman_tau]

i have a problem with my galant...i already replaced my spark plugs,wires,coil and ecu still has a occasional misfires gas consumption is high...somebody told me it might be the injectors or tr unit that controls the coil. any inputs would be appreciated.

by the way, i have a galant gsx.

 

[ktmrider]

TR and injectors could be an issue.

Also check the fuel pressure regulator, poor fuel economy and misfires at high(er) RPM's are common ( pig rich at idle, lean at higher RPM's ).

 

[rgeier11]

You may have a bad coolant sensor or o2 sensor. Use a datalogger to check what values your ECU is seeing.

 

[Struc]

ECU CAPS been replaced?

 

[oldman_tau]

thanks for input guys! i was able to replaced the injectors and it runs perfect now. thank you very much