white smoke out of tailpipe after brake work.I

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Yesterday I changed my front brakes. I had to replace the left caliper. As I was bleeding the caliper alot of white smoke started to come out the tail pipe and it wont stop. I checked my spark plugs, they look normal, no excesive oil in or around the engine compartment. The truck runs fine, stay on and is not stalling. I am loosing alot of oil, but no leaks at eye view, i figuerd it was because it has over 140,000 miles. i keep my oil changed very regular.