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Old 09-27-2014, 11:08 PM   #6
City: Whangarei
Country: New Zealand
Vessel Name: Whakata
Vessel Model: Steel 35ft custom
Join Date: Jun 2013
Posts: 21
Originally Posted by Ski in NC View Post
The tuk-tuk-tuk noise might be a sticky valve. Sticky valve moves suddenly and makes a loud noise out air intake. Check valve lash and push on each rocker to make sure none are sticking.

Does not explain it shutting down and being seized. But check easy stuff first.

Any milkshake under oil fill cap on rocker cover?

At idle warmed up, is blowby puffing out oil fill cap, or a steady waft of vapor?
No milkshake under the oil fill cap at all,
There is a bit of blowby puffing out the oil fill cap and the breather pipe from the valve cover to the air filter has picked up some oil.

The engine is due for its annual service, new oil and filters as well as impellers and fuel filters. I will be checking the oil filter for signs of metal filings.
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