05 tacoma 2.7l

Hi everyone, im new to tacoma world and have some questions, my truck (05 tacoma 2.7l) is throwing the code p0304, cyl 4 missfire, i need some opinions on what it could be. I put new plugs, coil packs, and injectors in it. Did a compression check, all good, checked fuel pressure from tank, good. Im stumped and have no clue what else it could be. Thankyou in advanced.

 

Probably need to have it run on a diagnostic to make sure the PCM is properly sending signal to injector and coil. In the meantime swap coil and injector one at a time to a different cylinder to verify if the misfire stays on 4 or if it follows one of the components.

Can you feel it missing or just the ecm throwing a code?
Have you done any other work to the truck recently?
How old are battery and alternator?

 

Come to find out one of the new injectors were weak, replaced with a good old one and runs great now.

 

What brand injectors did you use?
Just curious?


Thanks for the update.

 

Welcome to the forum Nate