Powerwasher
Team Owner
Joined: Jun 2001
Posts: 23,353
Likes: 1,054
From: Virginia USA
Disconnect the battery first then bag the Alternator, Dizzy and carb and anything else electrical you want to avoid spraying directly. Then take some compressed air and try to dry everything as best as possible or let it sit for a few house before reconnecting the battery and trying to start. What is you goal? Just clean the engine?
Thread Starter
Heel & Toe
Joined: Aug 2021
Posts: 17
Likes: 2
Disconnect the battery first then bag the Alternator, Dizzy and carb and anything else electrical you want to avoid spraying directly. Then take some compressed air and try to dry everything as best as possible or let it sit for a few house before reconnecting the battery and trying to start. What is you goal? Just clean the engine?
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
A powerwasher can cause more problems than you want, its overkill to clean a well running motor with everything connected. If I pulled a motor and everything was loaded with crap, yes. There are several safe but effective washes you can spray on, use a car wash brush and hose off. Use a low shine foam tire cleaner/dressing - apply and let it dry, rubber and plastic will look new without that greasy - oily look.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
Exactly. Nothing is waterproof under the hood. Water will seep through the firewall. All the delicate old wiring connections will corrode and you could damage your Starter, ALT and PS Pump.
Not worth it. Find alternative solutions.
Spray-can, Gunk Engine Cleaner, scrub + warm, no pressure, water rinse.
Not worth it. Find alternative solutions.
Spray-can, Gunk Engine Cleaner, scrub + warm, no pressure, water rinse.
Last edited by HeadsU.P.; Aug 9, 2021 at 01:03 PM.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,033
Likes: 9,155
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
I don't power wash anymore. If you have just a sliver of loose paint anywhere. The pressure washer will find it and lift the paint. Unless that's the goal. I use a good degreaser and rags, it it's in reall rough shape I let it soak to loose it up and give it a good brushing. Once its dry I get under it and use the spray and rags again. Once its clean and pretty it's pretty easy to keep it that way with just soap and a water hose
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