White smoke from tail-pipe.
As I was driving around town today, I noticed that there was white smoke coming from the tail pipe. The amount of smoke is increases if I rev the engine higher than 3000 rpm. The condition is intermittent, however.
My first thought was the engine was burning oil. I checked the oil and it looks new and the level is unchanged since when I changed 2 weeks ago.
The coolant looks fine both in level and colour and does not small like exhaust gas.
I tried to smell the white smoke and it has a very strong smell. It doesnt smell like the burning of oil but more like burning tar.
So third guess is that the cat has gone bad. I did notice some rattling sound in the cat region. (Kind of hoping its the cat, gives me a reason to do full exhaust)
I changed the PCV valve a couple of months ago.
I had the differential fluid changed yesterday, could that have anything to do with it?
Any ideas or any symptoms I should look for? Thanks
Last edited by TonyTheBullet; 09-22-07 at 08:33 PM.