As the title states, I have an intermittent misfire on #6, at idle. The ODBII code is P0306, which has been the same every time this misfire has returned. When the engine is under load, the misfire is gone.
I have replaced the entire ignition set (coil pack, plugs and wires) with OEM equipment, the PCV
, and filters. The MAF
have been cleaned, and I replaced the IAC
, as well as the (infamous) PCV
elbow. There are no vacuum leaks that I (or my starter fluid) can detect.
(Is there a way to get rid of the PCV
, by chance? It's a big fat PITA...)
To date, that damned misfire returns, over and and over.
What is ironic is that it happens most often when the fuel level starts to get low, typically around 1/8 of a tank, though this last time, it started at a 1/2 tank. It does not always happen, however, hence the 'intermittent' part. Some weeks, all is perfect, others..not so much.
Does anybody have any sort of idea what the dealio is?
I'm starting to think fuel injector, but I'm not so sure.