In article ,
"Capt. JG" wrote:

We're taking a look at a sailboat with this engine. Upon start up, there's a
fair amount of blue smoke, which disappears after the engine gets a little
warm. Also noticed it when you give it fairly high revvs in neutral. I'm
thinking value guides or rings? What do you think about that and the cost of
repair. It's got about 3200 hours on it, and I don't see any obvious leaks.

3200 hours TT (total time) on a 4-108, hardly even Broke IN. You may
just have a weepy Injector, or a guide that didn't seat. Compression
test should rule out any ring, or topend problems. A little blue smoke
is normal untill the engine comes up to Thermistat Temp, and one
shouldn't place much stock in what happens to exhaust color unless the
engine is loaded.

Me