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Old 09-27-2014, 11:00 PM   #5
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?
I did have the valves and clearances checked about 6 months back, I would have thought that if a valve was sticky it would result in a hard knock and immediate damage to the piston, in addition to some additional indications like rough running or smoking.

I will get the valves checked just to be sure.
KiwiExplorer is offline   Reply With Quote