I noticed a lack of power a few months ago but it was not throwing a code. Then if I went to accelerate quickly the engine light would blink and the car would go into limp mode. I installed new fuel injectors, coil packs, spark plugs, got a new battery. I got the car from a used lot and it clearly just has been neglected in the past. I also replaced the vtec system and both oil pressure sensors from the Honda bulletin because that had also clearly never been done. Would crank and then fly to 3000 rpm then cut off. Took apart the fuel separator and replace the strainer because it was nasty. Now it won't even start it just cranks. I am at my wits end after testing the entire starting system and getting voltage and I just don't know where to go next. It is still throwing P2647 and P0300. Not sure if the years of neglect from before I owned this car are finally catching up to it or if I'm just missing something obvious. Any ideas would be helpful.
What makes this problem better or worse?
Nothing
How long has your 2010 Honda Fit had this problem?
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Hi, too much "throwing parts" at a problem, and not enough troubleshooting as to root cause. This has ended up ultimately in wasted money thinking you're going to fix it by guessing.
Have you check valve clearances? What's your MAP voltage?
What is the quality of all your parts? Original Honda parts? That's a must.
You're getting into the weeds with fuel separators and fuel delivery. Engine misfire (P0300) isn't from that.
Obtain some professional assistance.
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