probable exhaust gas leak after a/f sensor replaced

[ocean408]

Hi Gurus,
Recently I replaced front a/f sensor on my 2000 Camry v6 (california). The good thing is - it eliminated 5 DTCs (for interested folks: P0125, P0171, P1150, P1153, P1155) . The bad (not sure) is I smell something near new o2 sensor every time I drive the car for a while. Not sure if it is WD-40 burning, which I had used to unscrew old sensor. How do I figure out if it is WD40 or exhaust gas? And if it is later - how do I go about fixing this (hope I dint damage the exhaust manifold thread while replacing the sensor).

PS: folks on craigslist mentioned that its probably NOT wd-40 or anti-seize compound; its probably a leak; I am going to warm up the car (to warm up the manifold) and then tighten the sensor if I can ..or may be reinstall (check the thread)...

any opinions?

[Eye8Pussies]

it's very hard to suggest an option at this point until you can pinpoint the exact location of the leak...the chances of it leaking from the a/f sensor though, isn't very high....

to pinpoint the leak, you can try using seafoam. the white smoke will then let you know where any leaks may be