Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 2 of 2
  1. #1
    Member Donne Trav's Avatar
    Join Date
    May 2008
    Washington, DC
    1994 Blk/Blk
    Post Thanks / Like

    Default Engine Washing??

    Considering the "Opti", how do you wash your engine? While changing the
    wires on my '94, I notice the engine/frame had a considerable amount of
    grease & oil build-up over the years. I've washed the engine in the past at the
    local car wash, but after the wire ordeal, I'm a little bit paranoid. Thanks

  2. #2
    Engine Washing?? Tuna's Avatar
    Join Date
    Mar 2003
    Mustang, OK
    '13 427 60th vert - CTS V Wagon(4-door Vette)
    Post Thanks / Like


    Back when I owned a C4, washing the engine was a time consuming chore. I made a bucket of soap and water (usually Simple Green). Got a rag or 2, a large bottle brush, a flat brush with bristles top and bottom and pumped up my air compressor with a spray nozzle attached and the pressure output set around 40 psi. Keep a hose ready also with low pressure also.

    I'd use the rag or the appropriate brush to clean an area working from the top down, working in small areas at a time. Then lightly hose off the soapy water, then blow the area dry of water.

    When not working around the OPTI you can use more water and air. Around the OPTI, I used less water and blew it dry more often.

    Wash the motor when cold. A warm or hot OPTI will cool quickly when wet and this allows the water to be sucked into the vent hole on the bottom of the OPTI which is not good. The 95/96 OPTI's had vacuum lines hooked to the vent hole and are less likely to be damaged by water but....

    After owning a '92 for 14 years and over 100K miles, I never had a problem with the OPTI except once when the humidity in Galveston County, TX stayed around 99% for 5 days and the car cold soaked in the garage the whole time. I knew the problem as soon as I tried to start it. 30 minutes of hot air from a hair dryer pointed at the OPTI dried it out and the OPTI pressed on for several more years.
    My Novels:
    Crossbow Revenge
    Alice Was Not Her Name
    Antiques To Die For
    Murder mysteries!

Similar Threads

  1. Replies: 1
    Last Post: 12-21-08, 12:44 PM
  2. Oil temp before nailing it?
    By froggy47 in forum General Automotive Discussion
    Replies: 54
    Last Post: 09-17-07, 10:32 PM
  3. Interesting GM Patents
    By Runge_Kutta in forum C6 Technical and Performance
    Replies: 12
    Last Post: 10-05-04, 04:29 PM
  4. VoxPop - Engine Oil Reports
    By Ken in forum General Automotive Discussion
    Replies: 0
    Last Post: 03-14-04, 02:29 PM
  5. Has anyone?
    By BigBrakeFuelie in forum C3 Technical and Performance
    Replies: 2
    Last Post: 10-11-02, 01:34 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts