I'm an electrical engineer in the off highway equipment industry and I won't spray mine. We use all the same parts and design standards that automotive industry uses. The wiring harness components are designed to resist water and dust contamination but all those plastic and rubber connectors and seals are now 20 years old and have lived through countless heat cycles and zillions of hours of vibration. Do you really trust they're holding up perfectly? One drop of water can EASILY travel from an engine sensor connector through the inside of the wire all the way to your PCM or other component and cause damage. And all it takes is for an old tired seal, or barely cracked connector housing to let in just a tiny drop of water because you pressure washed it to cause serious issues. As we all know, even normal C5s have their list of electrical issues. I wouldn't risk water being another.

 

Yeah, Corvettes are not designed for rain or wet streets.

 

[QUOTE=oharal;1599828024]I'm an electrical engineer in the off highway equipment industry and I won't spray mine. We use all the same parts and design standards that automotive industry uses. The wiring harness components are designed to resist water and dust contamination but all those plastic and rubber connectors and seals are now 20 years old and have lived through countless heat cycles and zillions of hours of vibration. Do you really trust they're holding up perfectly? One drop of water can EASILY travel from an engine sensor connector through the inside of the wire all the way to your PCM or other component and cause damage. And all it takes is for an old tired seal, or barely cracked connector housing to let in just a tiny drop of water because you pressure washed it to cause serious issues. As we all know, even normal C5s have their list of electrical issues. I wouldn't risk water being another.[/QUOTE


Appreciate your input but I was looking at a lot of guys who LIGHTLY spray there engines. Professional detailers. The guy did his kids Mercedes that had 100,000 plus miles. I don't agree with blasting everything at close range with a pressure washer by any means. The other key he said is to thoroughly blow dry every bit of water out with a high pressure blower. I can work around the electrical areas if I choose to. Appreciate your input though.