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Can I pressure wash my engine without hurting anything?

Tiny
JESTEP1966#
  • MEMBER
  • 2019 JEEP COMPASS
  • 2.4L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 48,000 MILES
I was in heavy mud and under my hood is filthy. Is there anything that I can't get wet?
Friday, February 5th, 2021 AT 3:17 PM

2 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Yes, there are a few things to stay away from to be safe. Mostly the computer control. I would mask off the alternator, PCM, under hood junction block, and any other computer. This would be a good safeguard to prevent any glitches from happening. Hope this helps and thanks for using 2CarPros.
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Friday, February 5th, 2021 AT 8:18 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,464 POSTS
I would avoid using a pressure washer on that vehicle under the hood. FCA connectors are real bad for having sealing issues and there are a lot of them. If possible you would want to use more of a house pressure line and still stay away from much of the electronics.
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Friday, February 5th, 2021 AT 10:03 PM

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