Testing water pump without stripping down - checking suggested method
Have an account? Register

Forgot your password?

Forgot your username?

 
Likes Likes:  0
+ Reply to Thread
Results 1 to 9 of 9
  1. #1
    Rods 'n' Sods Junkie TheWebDesignCompany's Avatar
    Join Date
    Jun 2016
    Location
    Southend on Sea
    Posts
    224
    Images
    3
    Post Thanks / Like
    TheWebDesignCompany is offline

    Testing water pump without stripping down - checking suggested method

    Hi, I'm still working on identifying the underlying cause of my overheating at idle issues.

    A mechanic today suggested that it could be a broken water pump and the engine cools thermally while driving along, but can't cope at idle.

    (Sounded reasonable to me) So to test the water pump without stripping down the engine, he said to disconnect the top radiator hose (& presumably the thermostat) and start the engine with the hose disconnected and pointed away from the car. If the water pump is working correctly then it should fire water out of the hose when the engine fires up?

    Has anyone done this before? Should I expect to see a lot of water pumped out, or just a little bit?
    I tried to find a youtube video of this being done to compare it with, but I couldn't find one...

  2. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  3. #2
    Official RnS Addict
    Join Date
    Apr 2009
    Location
    Glasgow,Scotland
    Posts
    2,123
    Images
    0
    Post Thanks / Like
    german8rcoupe is offline
    What engine?

  4. #3
    Off the Xmas card list kapri's Avatar
    Join Date
    Apr 2009
    Location
    Portsmouth
    Posts
    22,937
    Images
    12
    Post Thanks / Like
    kapri is offline
    Good mechanic Simpler way is take the rad cap off ,run it up to temperature until teh stat opens and then peer down the neck and watch the turbulence in the tank caused by the pump functioning . uy a contactless laser thermometer and trace water flow as well .

    Have you had the rad flow checked already ?

  5. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  6. #4
    Rods 'n' Sods Junkie
    Join Date
    Jul 2010
    Location
    Hampshire
    Posts
    413
    Images
    52
    Post Thanks / Like
    truckdoctor is offline
    Quote Originally Posted by kapri View Post
    Good mechanic Simpler way is take the rad cap off ,run it up to temperature until teh stat opens and then peer down the neck and watch the turbulence in the tank caused by the pump functioning . uy a contactless laser thermometer and trace water flow as well .

    Have you had the rad flow checked already ?
    I'd go along with that method

  7. #5
    Rods 'n' Sods Junkie TheWebDesignCompany's Avatar
    Join Date
    Jun 2016
    Location
    Southend on Sea
    Posts
    224
    Images
    3
    Post Thanks / Like
    TheWebDesignCompany is offline
    5.7ltr sbc 350 V8

  8. #6
    Rods 'n' Sods Junkie TheWebDesignCompany's Avatar
    Join Date
    Jun 2016
    Location
    Southend on Sea
    Posts
    224
    Images
    3
    Post Thanks / Like
    TheWebDesignCompany is offline
    Quote Originally Posted by german8rcoupe View Post
    What engine?
    5.7ltr SBC 350 V8

  9. #7
    Rods 'n' Sods Junkie TheWebDesignCompany's Avatar
    Join Date
    Jun 2016
    Location
    Southend on Sea
    Posts
    224
    Images
    3
    Post Thanks / Like
    TheWebDesignCompany is offline
    Quote Originally Posted by kapri View Post
    Good mechanic Simpler way is take the rad cap off ,run it up to temperature until teh stat opens and then peer down the neck and watch the turbulence in the tank caused by the pump functioning . uy a contactless laser thermometer and trace water flow as well .

    Have you had the rad flow checked already ?
    Ive had the rad recored with a quad core so should be brand new and perfect.
    Also just had the thermostat replaced with a new 160 thermostat

  10. #8
    Rods 'n' Sods Junkie TheWebDesignCompany's Avatar
    Join Date
    Jun 2016
    Location
    Southend on Sea
    Posts
    224
    Images
    3
    Post Thanks / Like
    TheWebDesignCompany is offline
    I think the method was designed to show instantly if the water pump is working or not without allowing the engine to over heat again...?

  11. #9
    I'm a newbie !
    Join Date
    Sep 2012
    Location
    Burlington, Wisconsin, USA
    Posts
    3
    Images
    2
    Post Thanks / Like
    jmbo is offline
    Two things to consider. Water pumps seldom quit working altogether. They may leak or the bearings go bad but if the pulley moves the pump works. Common problem? check to see if the thermostat is put in correctly and not backwards. Also are you using a mechanical fan or an electric fan? Do you have a fan shroud? I assume the yellow "A" coupe is the car in question. If you are using a mechanical fan, the position of a SBC usually sits lower in the farm than the stock "A" engine. This alines the Chevy fan with the lower half of the stock "A" radiator. If you are not running it with a fan shroud, the fan will have little effect cooling the engine. Good Luck.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Where you live, Town\City\County etc.

Please enter your full name
This field cannot be edited once it has been completed other than via contacting the site admin. Please make sure the information is correct first time.

Log-in

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. Replies: 8
      Last Post: 11-05-2011, 07:02
    2. sbf water pump
      By moles in forum Tech Discussion
      Replies: 12
      Last Post: 20-09-2009, 18:45
    3. bbc water pump
      By 58 delray in forum Stuff - WANTED
      Replies: 0
      Last Post: 24-06-2009, 11:58
    4. Rover p6 v8 water pump (new)
      By Street in forum Stuff - FOR SALE
      Replies: 0
      Last Post: 05-06-2009, 13:28
    5. Water pump
      By sidspop in forum Stuff - WANTED
      Replies: 5
      Last Post: 02-05-2009, 16:29

    Bookmarks

    Posting Permissions

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