Quote:
Originally Posted by MrDinkleman
Won't the water blocking the exhaust kill the engine, eventually?
|
It shouldn't. As long as the engine is running, exhaust will continue to flow underwater and will bubble to the surface. It only stops if you actually obstruct the flow of exhaust, like with a rag or a potato. It used to be a popular prank when my dad was a kid to go stuff a potato in some other guy's exhaust and laugh when he tried to figure out what was wrong. If it's just water, the water will get out of the way.
Quote:
Originally Posted by MrDinkleman
I remember a guy in high school had one of those surplus army jeeps. Not only did it have a windshield mounted snorkel but if also had an extended exhaust pipe that ended above the windshield height...
|
Some of the parish and state emergency management trucks in Louisiana have those. Those are there not for while it's running, but for when you stop. If you stop an engine while the exhaust pipe is underwater, it can suck water back up into the muffler and catalytic converter. Even just sitting still when floodwater rises, it can run into the exhaust. In flood prone areas there may be times when emergency personnel want to be able to stop and get out without leaving their truck running or may need to use previously parked vehicles in areas that have been flooded.
I imagine the military Jeeps had them just to make sure they were always ready to go.