Quote:
Originally Posted by xstuntman
You can remove the PCV without removing the valve cover but the pre 2013 valves are known to be undersize causing significant buildup under the back portion of the passengers valve cover. If it were me I would remove it anyhow to clean and then install the newer PCV. Drilling the old one to correct size is an option to since you will have it out. No valve on the driver's side.
And the intake valves will be heavy with carbon. CRC is my weapon of choice and if you work on import direct injections you will be familiar.
Maybe post some pics of what you find.
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Alright, I'm back with an update. For context, all this work stemmed from the fact that she had a misfire on the freeway upon sudden hard acceleration, and upon inspection after pulling the related coil and seeing oil down in the hole, I told her it was only a matter of time before this happens again.
I started at 6PM, and was finished around... 3:30AM, yeah that job took a while, but i was being thorough since it's my sister's daily.
The intake manifold was absolutely caked with oil, wish I would've thought to take pictures but it is what it is.
Inspected the cams, and spark plugs, and other than some normal wear on the cam lobes, and a bit of oil on the plugs, nothing to worry about.
The old valve cover gasket was hard as a freaking rock, had to use a pocket screwdriver as an emergency pick to pry it up piece by piece.
Got everything back together, torqued the spark plugs to 13ft/lbs, and simply hand tightened the valve cover bolts with a ratchet, the spec is something like 8ft/lbs so I could do that without even touching a torque wrench, same for the intake manifold bolts.
Once it was ready for a test drive, I cleared the codes, fired it up, drove it to the gas station and back and everything was fine... until I tried recreating the situation that caused her misfire on cylinder 3 in the first place, and what do you know, it misfires again on cylinder 5, so I told her I'd do some research and no drag racing until then. What dk you think it could be, think i should replace cylinder 5s coil just to be safe?
An interesting thing i noticed in the left bank had all aftermarket replacement coils, whereas the right was all original OEM, so I'm led to believe this was an issue in the past.