P0305 misfire

[jaguar77]

Anyone want to suggest the order of things to try and remedy this? Thought I'd start with a new injector.

 

[kapinallinen2]

Swap coil packs first then plugs and swap injectors as the 3rd step.

 

[Richard320]

Move the coil pack from 5 to another cylinder and move the spark plugs to a third. Then clear codes and drive until it sets again. If it followed the plugs or the coil, it's pretty easy. If it stayed with cylinder 5 then it's a compression problem or an injector problem. Compression can also mean a bad lifter or something where it doesn't breathe in enough air. So you'll get a weak cylinder yet it will pass a standard compression test.

Is this not under warranty?

 

[jaguar77]

37500 miles.

 

[kapinallinen2]

Drive line warranty is 5 years 60K miles IIRC. Emissions, that misfire could come under, is 80K?