albin 27 fc.....new owner

[Aurora]

yanmar 88hp low hours. surveyor said the engine was rated at 3800 rpm and when sea trailed, she got up to 3700. was just delivered to me and when i bring it up to 3000, the engine starts to clank and smokes out the exhaust. i bring it back down to 2500 and all good. i did notice that theres too much engine oil in her. could that be the culprit????

[boater_mike]

What color is the smoke? Does it only smoke when starting and then immediately dissipate? If she came up to 3700 rpm during sea trials (without smoking), my guess is something happening with the fuel system. I read your other post regarding running for 20-30 minutes before cutting out. A vaccumed the fuel system per another posters suggestion is a good place to start. Also look at you filters. Old fuel and water could be an issue as well.

At 3700 rpm and black smoke indicates an overpropping issue - the same issue I have on my AC27FC. I'll wait until I can pull it out again and change the prop. I max out at 2500 rpm on my little 4D61 with black exhaust and rising engine temps - an indication the engine is being overworked. NOT good. At 2k-2.2k I'm fine.

-Mike

[Aurora]

it smokes(black and oily smelling) and chatters when i get it up to about 3000 rpm. i bring it back down to 2500 and clear and smooth again. engine temp does not increase.. i do have way too much engine oil in her. i'm taking that down to the proper level. not sure if thats contributing to the problem.

[boater_mike]

Too much engine oil can be a big problem. I had a vehicle once that had the "oil changed" at a $19.99 oil change drive thru. The problem arose after I "changed" the oil, I drove a little, and once up to highway speed, the engine started chattering and I immediately lost oil pressure. I pulled off, checked the oil, the whole dipstick was oil. Turns out, the old oil was NEVER removed. They just added 4-1/2 more quarts. Too much oil can get so high inside the engine, it starts to "froth" and starts to behave like foam - my oil pressure sensor sensed only foam - hence the loss of oil pressure. (think the oil pump only pumps liquid...not air). Thankfully, i was close to home, drained all the oil, and replaced with the proper amount. No more problems. I was VERY lucky.

-Mike