I've done some "light" cleaning in the engine compartment before using various type of degreasers and the garden hose sprayers. I wouldn't think a pressure washer would be much different. The same rule of thumb should apply in either case.

I just tried to make sure that I kept the stream from hitting any electronic boxes or housings directly. Also, make sure that you don't hit any areas (dip sticks, filler caps, etc.) directly as you might get water into the engine fluids areas that way.

Obviously steam cleaning by a pro is better, but this way you can get rid of heavy accumulations of grease and road grime to see what is going on in there.

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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles