Touchy subject here.
Some say "clean your motor".
Some say "Don't"
My second car was a 1979 Toyota Corolla. I bought it from these 2 old ladies for $400 and the inside and the outside was like brand new. I bought it in 1993. The car was immaculate to say that it was as old as it was. I popped the hood, and the motor looked brand new. After a short test drive, and putting cash in their hands, their parting words were: "Keep the car clean. Wash off the motor. A clean motor is a good running motor. Take care. Thanks again, Bye"
Those words stayed with me because I was not in a position to argue. The car was in excellent condition in 1993 and looked just as good as it did in 1979. That says a lot about the ladies' practice of continually washing the motor through the years (they were the original owners).
Pic of the Corolla:
So, through the years, I have remembered just what those ladies said. And I DO clean my motor. I do not make a practice of spraying the motor with a high pressure hose.
Just last weekend I took the Blue Bull to the car wash, and this is what I did:
1. I killed the engine & let it cool a few minutes.
2. I popped the hood and sprayed some Orange Degreaser Spray
that I bought from the Dollar Tree.
3. Let the degreaser sit on the engine a few minutes while I washed the rest of the car
4. Rinsed of the motor without using the high pressure spray. DID NOT USE the high pressure spray.
5. Sprayed some more degreaser on the motor
6. Let the degreaser sit while I rinsed off the rest of the car.
7. Rinsed off the degreaser.
8. Lightly sprayed tire cleaner (from the car wash - not the kind you buy in a can) on the motor.
9. Let the tire cleaner sit on the motor while I cleaned my tires
10. Rinsed the tire cleaner off the motor.
11. Put the hood down, and rinsed off the hood.
I don't clean my engine every time that I wash my car because I do feel that there are risks involved with spraying water and chemicals on the electrical parts. I do not clean the engine with a tooth brush. That thorough cleaning is reserved for my CB550. (The engine is smaller, and it is a lot harder to keep clean because it is exposed to the elements when I drive it, so I feel it is my obligation to get in there with a toothbrush and clean it properly.)