Hey Guys, thanks for the reply. I replaced plugs and wires to the 8mm ones you recommended Mike last month.
I do have p1174 and p1171 together, (but for a while it was mostly p1174).
Trying to fix this, I cleaned out the PCV system and the MAF last week. In the process of cleaning the PCV, I broke a plastic fitting and Jimmy-Rigged it while I replaced it with a brass fitting. However, this was not airtight on the passenger side PCV hose and subsequently caused me to get pending P0300, p0303, p0305 and p0307.
My UG still says that all of these codes are pending. How long will the UG say these codes are pending past receiving the signal of the misfire? Or will it only say they are pending if it JUST received the codes? So in other words, if it says they are pending, does that mean they are still currently problems and my fix three days ago didn't clear the misfire codes?
I am smoke testing for vacuum leaks this weekend.