Hello,
I have a 2018 Subaru WRX with about 68,000 miles on it that is periodically blowing blue oil smoke upon startup. It's been happening for several thousand miles now, but it only happens once or twice per week. I immediately thought valve seals, but I would think that valve seals would be more consistent.
It's got the FA20 DIT motor and has never used any measurable amount of oil, and it still isn't. It only does it on an overnight cold startup. If it's only been a few hours it won't smoke. The smoke lasts 5-15 seconds, and I don't see smoke at any other time.
Can bad valve seals be this inconsistent? Can you think of any other issues that could cause inconsistent smoke on startup?
Thanks in advance!
I have a 2018 Subaru WRX with about 68,000 miles on it that is periodically blowing blue oil smoke upon startup. It's been happening for several thousand miles now, but it only happens once or twice per week. I immediately thought valve seals, but I would think that valve seals would be more consistent.
It's got the FA20 DIT motor and has never used any measurable amount of oil, and it still isn't. It only does it on an overnight cold startup. If it's only been a few hours it won't smoke. The smoke lasts 5-15 seconds, and I don't see smoke at any other time.
Can bad valve seals be this inconsistent? Can you think of any other issues that could cause inconsistent smoke on startup?
Thanks in advance!