Cylinder Leakage Tester | FerrariChat

Cylinder Leakage Tester

Discussion in 'Technical Q&A' started by Futureman, Jun 30, 2010.

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  1. Futureman

    Futureman Formula 3

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    Can anyone recommend a good kit? Don't say Harbor Freight. I will never walk into that place again.

    I want a quality tool, but I don't need shop grade that is going to get used to death.

    I was looking at some of the ones on Tooltopia, but I'm not familiar with the brands they are showing.
     
  2. RGigante

    RGigante F1 Rookie Owner Project Master

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  3. fastradio

    fastradio F1 Rookie BANNED Professional Ferrari Technician

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    This is a very nice unit and similar to the one that is sold by Mac Tools....
    http://www.tooltopia.com/otc-tools-5609.aspx

    David
     
  4. Futureman

    Futureman Formula 3

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    Ahh, David to the rescue. I was hoping you'd chime in. Funny, that was the one I was looking at. Order submitted. Thanks, man. I may be emailing you with some questions. My car has got me baffled right now.
     
  5. fastradio

    fastradio F1 Rookie BANNED Professional Ferrari Technician

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    No problem...A bit odd to see coolant as your past photos would appear to indicate. Although I've just witnessed first hand a QV with multiple cracks in both cylinder heads, I've never seen coolant around the valves....and would be doing some serious detective work before condemning the heads.

    You can always reach me at [email protected]

    Best,
    David
     
  6. Futureman

    Futureman Formula 3

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    I put a coolant pressure tester on the expansion tank and then pressurized it to 16 psi. It sat for an hour and the gauge didn't budge. I'm planning to send the oil off for analysis and do a cylinder leak down test and see if that tells me anything. It really has me confused that the car runs great. I'm planning to redo the coolant leak test with the car warm and see if the results change.
     
  7. It's Ross

    It's Ross Formula 3

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    A leakdown tester in nothing more than a manifold, regulator and a couple of gauges. Even (matched)inaccurate gauges are fine as it's a percentage you're looking for.
    I have used the HF set and am happy with it.
    Nothing about a cylinder leakage test will help you find why coolant is in the intake tract.
    I'd rather invest in a borescope to see if this coolant is there when the intake has NOT been dis-assembled.
     
  8. fastradio

    fastradio F1 Rookie BANNED Professional Ferrari Technician

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    Hmm...80psi of pressure in the combustion chamber will find any cracks in the water jacket and likely show bubbles in the expansion tank. If bubbles are found in the expansion tank, the coolant passages in the head may be compromised. Hopefully, his combustion chambers don't look like these QV heads...
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    Last edited by a moderator: Sep 7, 2017
  9. Futureman

    Futureman Formula 3

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    I'm not a prayin' man, but "please, God, no."
     
  10. Motob

    Motob Formula 3 Professional Ferrari Technician

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    The best way to check it is to put the suspect cylinder at TDC, apply shop air (180PSI) to the cylinder and then put a coolant leak detector on the expansion tank with a little pressure (10psi). If you see the pressure rise on the coolant leak gauge, then you know where the problem is.

    Brian Brown
    Patrick Ottis Co.
     
  11. vincenzo

    vincenzo F1 Rookie

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    bdc might be better

    rgds,
    Vincenzo
     
  12. Motob

    Motob Formula 3 Professional Ferrari Technician

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    At what point are both valves closed at BDC? Kinda hard to pressurize the cylinder if a valve is open.
     

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