jgc61sr2002 said:
69Cobra - Welcome to the Mercury Marauder site.

With todays electronics I wouldn't use too much water under the hood.
Water won't hurt anything.
If water gets inside something then it was broken to begin with.
I have a Karcher pressure washer that hooks up to my garden hose.
It puts out 1500 psi COLD WATER, and has a line in for detergent.
I use the pressure washer with moderate pressure on a COLD ENGINE to wash out the whole
underside of the hooded area, engine, firewall, fenders, radiator support, and radiators too.
I even have an attachment for under the car and under the fenders.
All I use is plain water, no detergent. The pressure alone washes off the grease and oily residue.
Its also great for washing off all of the salt residue from the winter too!
So far I haven't had any problem with water getting into anything.
All of the connectors under the hood, with the exception of the battery terminals are weatherproof now.
So a little water spray shouldn't hurt anything.