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Old 11-17-2008
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iamflagman iamflagman is offline
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Quote:
Originally Posted by Randy Dupree View Post
most trucks don't have anything on the bottom of the stacks,but on a truck the bottom of the stack is way below the engine,it would take alot of water to fill it up.
one thing you want to be sure of,don't park or stand near a non-running truck right after a rain storm,when they start it up everything nearby gets a bath of sooty water!

and,some trucks do have a sump and a drain on the bottom of the stack.
the sump doubles as a mount that holds up the stack,basicly its a "cup" welded to the bottom of the elbow,the cup has a nipple welded to the bottom,the nipple goes into a rubber mount and that supports the stack from the bottom.
the center of the nipple has a small drain hole in it.

Years ago I had a similar experience standing next to a recently shut down Volvo semi tractor, that probably had an oil leak, possibly in the turbo and when he started it up again I got an oil shower, it hadn't been raining so I knew it wasn't water from rain anyway. I have never stood next to any exhaust pipe since then, when the engine was being started.
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