I currently own a 2008 Fit Sport. I am having an issue where I am losing power, then it "jumps" with power, has been using more gas. I have replaced the spark plugs twice in 2 months, and the pcv valve tonight. The check engine light is on. It is misfiring, mostly random according to the codes it spits out. I am leaning towards the coils are going bad (as I read on another site), but a friend said it may be the head or a valve adjustment. Another said it could be the fuel injectors are dirty. I am out of ideas.

 

It could be any one, or combination, of the problems you mentioned: valves, coils, gas, etc. What codes is it giving?

 

in this order: p0304, p0302, p0300, p0301, p0303, p0304pd, p0301pd, p0302pd, p0300pd, p0303pd...looked them up and all are related to spark plugs, coil packs, or fuel injectors, or air intake.