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Map-oxy - failed at getting O2 sensor out or 14mm opposite bong 850 1995

The o2 sensor I though I might bust if I heated it up too much. There is a bong opposite it with a 14mm hex which I heated up , but which does not want to loosen. I might drill a hole after the cat to see if clog is in muffler.

btw - no 2nd o2 sensor found after cat

http://s1314.photobucket.com/user/84quattro/media/PostCatPipesV850GoodShot_zpspuxjsiiz.jpg.html






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New Suspecting backpressure in exhaust. Good place for vacumm ck or diag. [850][1995]
posted by  Three5bangers  on Sun Dec 6 12:24 CST 2015 >


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