Injectors are ok. I pulled the K&N and put in a paper filter. Cleaned MAF. Cleaned TB as well as I could (on car). Its DBW so I had to have someone hold gas down so I could clean inside. Also ran Techron through the fuel system. With each little thing, it seems to run even better than before.
The kicker is that is runs great 90% of the time. I am finding it misfires on start-up, sometimes. The misfire lasts until I shut it down and wait a few minutes. Sometimes it will start up clean, others it will start up misifiring. I wait a few more minutes. Repeat until it starts clean. Every once iin a while it will misfire in heavy traffic conditions too.
It is very intermittent. The only consistent is my mileage is lower, but I am not sure if that is from the misfires or overall.
Im leaning toward a faulty MAF or MAP. I have cleaned the MAF three times- each time it improved the way it ran.
Monday, September 15th, 2014 AT 5:05 PM