Results 1 to 5 of 5

Thread: V8 running hot

  1. 22nd February 2011, 10:33 PM #1
    ADDO110's Avatar
    ADDO110
    ADDO110 is offline Fossicker
    Join Date
    Jul 2008
    Location
    perth
    Posts
    62
    Total Downloaded
    0

    V8 running hot

    Im havin some trouble with my 4.6 running hot when i got the county it sat on 1/4 for bout 2years then the temp sensor packed it in bout 6 months ago got a new one then it ran at bout 1/2 on the guage so i thougth i would get it checked out got new radiator all hoses thermostat all oils done and in the last 2 weeks has got up to 3/4 a couple of times and now generally runs just over 1/2. no water in oil or oil in water have checked viscious coupling on fan its ok but i've had to top up coolant twice in last 2 wks.im a bit stumped any ideas would be great.thanks adrian
    Reply With Quote Reply With Quote
  2. 22nd February 2011, 11:52 PM #2
    HangOver's Avatar
    HangOver
    HangOver is offline YarnMaster
    Join Date
    Jan 1970
    Location
    back in the suburbs, near joondalup
    Posts
    3,438
    Total Downloaded
    0
    wait till the engine is really cold like in the morning start it up and run your fingers over all the hoses and connectors.
    I have had at least two occasions where I had a hose leaking just enough to let out a few drops and as the engine was hot it evaporated and i never noticed.

    if the 4.6 still has the two heater hoses going through the firewall give the a good check.
    Reply With Quote Reply With Quote
  3. 23rd February 2011, 07:31 AM #3
    PhilipA
    PhilipA is offline Swaggie Subscriber
    Join Date
    Jan 1970
    Location
    Avoca Beach
    Posts
    14,150
    Total Downloaded
    0
    Most likely with these symptoms you have a blown head gasket or a slipped sleeve or both.

    Head gaskets usually leak to atmosphere so get under and look at each end of both heads where they join the block. Also look at the water pump bearing drain.

    To preliminarily check the sleeves, take out the plugs while cold and see if there is any condensation on one plug. Also see whether one plug looks cleaner than the others.
    Regards Philip A
    Reply With Quote Reply With Quote
  4. 23rd February 2011, 06:57 PM #4
    ADDO110's Avatar
    ADDO110
    ADDO110 is offline Fossicker
    Join Date
    Jul 2008
    Location
    perth
    Posts
    62
    Total Downloaded
    0
    cheers guys i wiil check both got it booked in friday so i'll no for sure
    Reply With Quote Reply With Quote
  5. 23rd February 2011, 08:12 PM #5
    jakeslouw's Avatar
    jakeslouw
    jakeslouw is offline Master
    Join Date
    Mar 2010
    Location
    South Africa
    Posts
    867
    Total Downloaded
    0
    Chuck a bottle of Stop Leak or similar into the radiator and see what happens: a well-known writer that contributes to LRO UK magazine and owns his own workshop does that on 4.6 V8s with suspect liners or suspect porous blocks, and reckons it fixes the problem about 75% of the time with no ill effects.

    Worth a try instead of a strip-down?
    Reply With Quote Reply With Quote
« Factory Options/Accessories | HID lights »

Bookmarks

Bookmarks

Posting Permissions

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

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!