How to tell if crank seals are bad/failing or had not been replaced?

[uraceulose]

Hi guys,

A friend of mine purchased a rebuilt motor and took it in to have it professionally installed locally. The local installation mechanic is claiming that there is no way this is a rebuilt motor and that the crank seals are no good and the top end was the only thing rebuilt.


It's tough to find a knowledgeable 2 strong PWC shop in our area...

Do you have any advice as to how we can confirm/check to see if the the crank seals are good or had been replaced?

Thanks so much,

Donnie

 

[mikidymac]

You can visually inspect them and see if they look old or new.
To verify they are good you need to do a leakdown test by sealing off the intake and exhaust and pressurise the engine through the pulse nipple to 8 psi and it should hold pressure for at least 10 minutes.

 

[uraceulose]

Thank you so much Mik