Hello all,
I have an '03 Avalon XLS with 165,000 miles on it. Started smoking on start up, or whenever it sat for more than 2 hours. Greyish smoke, see the attached video.
avalon1.mp4
I changed the PCV valve, which was extremely dirty and filled with sludge. No change. I'm assuming it must be the valve stems seals going bad. Now, sometimes it can sit for hours and still not have any smoke, but more than 80% of the time, it does this. The video you see here was taken after a 20 minute drive at 55 MPH average speeds. It did have a slight stumble upon accelerating from a full stop, followed by a large amount of same color smoke that lasted for 5 seconds. After parking in the garage and sitting for 2 hours, this is the result. Any other input you can offer would be greatly appreciated!