How To Pressure Test a Mercruiser Alpha One

This works on pretty much any alpha, bravo and outboard drive units. If you've got oil leaks or water intrusion into your gear oil, your lower unit or entire drive needs to be pressure tested so you can find the leak before something catastrophic happens.

Parts to build a lower unit pressure tester:
➡ Gas pressure tester: https://amzn.to/3RIPdfl
➡ Hose with lower unit fitting: https://amzn.to/45YPlvi
➡ Fitting to connect hose to gauge: https://amzn.to/44UYJ1O
➡ Small bike pump like this: https://amzn.to/3RuNpGr

Alternative tool parts:
➡ Mityvac: https://amzn.to/3Ryp42m
➡ Hose adapter: https://amzn.to/3PKoBZC

Or just buy one of these➡: https://amzn.to/3ZmO8eF


0:00 Intro
1:30 Leak test
3:00 Leak found
4:00 Re-test

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