Hi again all!

I got i thing to ask about 4-stroke engine valve sound. When i unscrew glow plugs off from cylinder head and turn engine on camshaft i can hear "metallic" sound like "PLIP" "PLOP" and so on when i rotate the engine. Is that OK? I been only break in for few tank of fuel. I think valves caused this sound but i don´t sure.

Engine seems work normally and when engine is running sound are gone too. Weird?

I hope you can understand what i mean, bit hard to say this in English, from Finnish it is lot easier.

Some valve clicking is normal, but you must check the valve clearances
after a few tanks, and every couple months. Put some oil on the rockers
and some down the push rod tubes when you service the valves to provide
some additional lubrication.

Dave.

And also no nothing sounds are heard when glow plug is in place and engines compression in OK too, so valves don´t leak.