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Coolant Leak - sometimes !?

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    #1

    Coolant Leak - sometimes !?

    This is wierd.

    Saw coolant dripping quite fast (1 drip per second) under the car after it had been stopped for 10 mins. PANIC!

    Drove 10 ft into the garage, got under with a trouble light. Leak had stopped. Ran engine for a while to get coolant hot (and pressure up). Nothing.

    Radiator = Full
    Overflow Reservoir = Half Full (normal for me)

    The tell-tale dried green water SEEMS to be from near where the lower water hose meets the water pump.

    All I can think of is that if the bearing/seal of the water pump is in a specific situation when I stop the engine then it leaks ???. When the car is running it does not leak.

    Hoses seemed to be Ok and tight.

    Before I go pulling off the water pump - any comments?
    Last edited by RobClark; 12-18-2009, 04:16 AM.
    Rob the Aussie
    Photos
    Founding (and only) member of the CLIPPer Club.
    (Continuous Lincoln ImProvement Program).

    Car: '86 Lincoln Town Car
    Engine: 302 Windsor
    Tags: None
    #2
    I had that same issue with my diesel radiator, turned out my cold tank had the seam cracked a bit - when engine was running the crack would seal itself, then upon cool-down it would open up a bit and drips would occur. So check your radiator carefully, maybe it's getting old and things don't seal quite as good as they did when new?

    Comment

      #3
      Originally posted by RobClark View Post
      This is wierd.

      Saw coolant dripping quite fast (1 drip per second) under the car after it had been stopped for 10 mins. PANIC!

      Drove 10 ft into the garage, got under with a trouble light. Leak had stopped. Ran engine for a while to get coolant hot (and pressure up). Nothing.

      Radiator = Full
      Overflow Reservoir = Half Full (normal for me)

      The tell-tale dried green water SEEMS to be from near where the lower water hose meets the water pump.

      All I can think of is that if the bearing/seal of the water pump is in a specific situation when I stop the engine then it leaks ???. When the car is running it does not leak.

      Hoses seemed to be Ok and tight.

      Before I go pulling off the water pump - any comments?
      I had the same thing happen to me. Sounds like the bearing seal is leaking and coming out the weep-hole. Which, if so, means you need to replace the water pump.

      Here's the thread from when I had this problem, should be helpful to you.
      http://grandmarq.net/vb/showthread.php?t=30966
      Former panther owner
      1981 CV 351 4bbl
      1991 CV 302 EFI

      Comment

        #4
        water pump
        Pete ::::>>> resident LED addict and CFI defector LED bulb replacements
        'LTD HPP' 85 Vic (my rusty baby) '06 Honda Reflex 250cc 'Baileys' 91 Vic (faded cream puff) ClifFord 'ODB' 88 P72 (SOLD) '77 LTDII (RIP)
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        85HPP's most noteworthy mods: CFI to SEFI conversion w/HO upperstuff headers & flowmasters P71 airbox Towncar seats LED dash light-show center console w/5 gauge package LED 3rd brake light 3G alternator mini starter washer/coolant bottle upgrade Towncar power trunk pull underhood fuse/relay box 16" HPP wheels - police swaybars w/poly rubbers - budget Alpine driven 10 speaker stereo

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          #5
          I would look at the small heater hose's first. I replaced the the little by-pass hose, then found a pin hole in the heater hose behind the coil.
          89 CV LX 225/60 x 16 tires, CC819 rear springs, Front & rear sway bar, trans & PS cooler from 90 cop car. KYB shocks, F-150 on rear. Dual Exhaust w/ H pipe. Dark brown door panels, carpet, steering wheel, trim parts from a 87 Mer GM. Power front buckets from 96 Jeep Cherokee. LED'S front & rear. 3G Alt from a 97 Taurus wagon 3.0. Electric fan. Rear axle from a 97 PI 3.27 with disk brakes. Headlight relays.

          Comment

            #6
            sounds like water pump. A pressure test with the engine cold should show it.
            86 Lincoln Town Car (Galactica).
            5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

            91 Lincoln Mark VII LSC grandpa spec white and cranberry

            1984 Lincoln Continental TurboDiesel - rolls coal

            Originally posted by phayzer5
            I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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