OldRadios wrote:
"There is always water at the tailpipe when starting"
That means it's always sitting with moisture in it.
No it does NOT mean that at all.
At least no more moisture that appears on the frame, bumpers and the outside shell.
When you stop the engine after a drive, the pipes are HOT and moisture will NOT accumulate in them as they cool down.
The moisture you see spewing out right when it is started is a cloud of water vapor and a tiny bit of smoke that is still relatively "cold" when it hits the end of the pipe. This comes from the fuel burning and NOT from any accumulation in the pipes.
During that warm up time ONLY some of the moisture will condense inside the pipes......until they come up to operating temperature and burn it off.
There are a couple of fairly good reasons to run the engine, in some circumstances, but getting water out of the pipes is NOT one of them.