Questions and Answers

Ford Taurus Sucks In Some Water Q. My daughter drove her 1999 Ford Taurus through some high water. She says the water was 3" deep, but I'm sure that it was deeper. At any rate, it was not above the bottom of the doors. The car shut down immediately and will not restart. My mechanic has tried to turn the engine over manually and says that it will not turn.

He suggests that the engine has seized-up due to ingesting water. Is this possible? I remember driving in much deeper water as a teenager in my 1971 Mustang with no similar result. The car is 6 cylinder, fuel injected, automatic transmission, power steering.

Thanks,
Wes

A. As you can see in the diagram below, the air intake is pretty low. Low enough to easily suck in water that is about 8" high or so. The air intake on a 1971 mustang was on top of the engine and it would take water at least three feet deep to reach it. And by that time the whole engine, along with the driver, would be completely under water.

If the engine won't turn by hand, then she probably sucked water and since water can't be compressed, the engine locks up. This is called "Hydrostatic Lock".

Assuming she was going slowly, there is a chance that no damage was done. I would try removing the spark plugs and air filter. The crank the engine, making sure everyone is well clear of the engine. The water being pushed out will be flying everywhere. Then let it sit over night to let it dry out then you can put the spark plugs back in and try to start it.

If it starts and runs, then chances are it's all right. Put a new air filter in and button it up. Driving it for short distances will tell the tale. If it drives and runs normally, you're good. If not, then you're looking at internal engine damage.