360 - 360 coolant leak | FerrariChat

360 360 coolant leak

Discussion in '360/430' started by cladd2000, Jun 8, 2021.

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  1. cladd2000

    cladd2000 Formula Junior
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    Jan 18, 2005
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    #1 cladd2000, Jun 8, 2021
    So I did my yearly oil change yesterday. I get the car up on ramps, take off the undertray and see slow drips of coolant coming from the belts in the back. Oddly very little evidence of prior dripping on the tray. I get out my bore scope and look from above and below and still not sure the source. Water pump and heat exchanger “seem” to be ok. My question is how is this diagnosed? I’m thinking I will need to look from the access panel behind the seats.


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  2. BrettC

    BrettC Formula 3

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    #2 BrettC, Jun 8, 2021
    It might only leak when hot and running. Try that yet?
     
  3. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #3 Rifledriver, Jun 8, 2021
    You might need that panel out to fix it but I cannot imagine you need it out to find it. Do you have a pressure tester? If not it might get very difficult.

    Any fluid on top of the engine will run down behind the water pump to the bottom.
     
  4. cladd2000

    cladd2000 Formula Junior
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    #4 cladd2000, Jun 8, 2021
    I hear you suggesting that I climb up on the engine to look down better.


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  5. cladd2000

    cladd2000 Formula Junior
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    #5 cladd2000, Jun 8, 2021
    I only started it enough to back onto ramps. Cold before that. It stopped overnight, which prob means nothing



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  6. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #6 Rifledriver, Jun 8, 2021
    That is one choice. Via bore scope, mirror or whatever see if it is wet on top of the block near the front. If not it coming from the front somewhere.
     
  7. lkstaack

    lkstaack Formula Junior

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    #7 lkstaack, Jun 8, 2021
    If it is indeed coming from the vicinity of the belts, there are multiple possible sources very near each other. As you said, opening up the engine access panel will provide the most reliable means to assess it. It could be coming from:

    -worn hoses or under tightened clamps from
    >two hoses from the expansion tank
    >two hoses to and from radiators
    >heater hose
    -worn heat exchanger rubber sleeve or under tightened clamps
    -worn seal:
    >water pump housing
    >water pump

    Most of those areas probably wouldn't deposit coolant in front of the belts though, it would be deposited on the block. Except for the water pump seal, heater hose, and radiator hose.
     
  8. cladd2000

    cladd2000 Formula Junior
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    #8 cladd2000, Jun 8, 2021
    Man you are good. Upon further bore scope it looks like the thermostat housing seal. I’ll do the panel and report back in a few days


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    one4torque likes this.
  9. lkstaack

    lkstaack Formula Junior

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    #9 lkstaack, Jun 8, 2021
    I forgot about that one.
     
  10. cladd2000

    cladd2000 Formula Junior
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    #10 cladd2000, Jun 30, 2021
    Yup. Thermostat gasket leak. $5 part and my labor. Can’t imagine that cost at the dealer


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