Mach5 leak - Printable Version

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+--- Thread: Mach5 leak (/showthread.php?tid=8762)

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Mach5 leak - jmbushey - 11-21-2025

Anyone else experience a leak like this on their water pump? Was going to start with new outlet cap and thread tape.

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RE: Mach5 leak - hypoxia - 11-21-2025

I believe there is an "O" ring on that fitting.  I'll check on my parts pump.

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RE: Mach5 leak - Richard - 11-21-2025

There is an O ring in that fitting. It does not seal with the threads.

Replace the O ring and use silicone grease when reinstalling.

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RE: Mach5 leak - jmbushey - 11-21-2025

Thank you all very much!

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RE: Mach5 leak - hypoxia - 11-22-2025

We came up with size 221 "O" ring
   

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