best engine i had the little yanmar absolutely bullet proof, the more you asked from it the more it gave it was always happy pushing my little trident along at full chat.
Many year ago I had a Compac 23 with inboard diesel and yes it was an Yanmar 1GM. Dang I miss the engine and even more so miss that boat! April Moon was its name, would be interesting to find out where it might be? Hope it's being enjoyed as much as I did.
Hi, the red hose at the top is for what? My same engine when revved high begins to smoke and then shuts off, it's grey smoke. Any idea what that could be?
for the people rev when cold is bad, its a marine engine its always cold , it has always cold water from lake or sea ,so there isnt much of a warm up ,i have never seen boats get in water and wait half hour to warm up
I'd take a 2-71, 3-71 or 4-71 with or without blowers.Heck,a 6-71 is available from 150hp to 1,200hp !Talk about different applications ! Detroit Diesel Corp knew what we needed,from 2 cylinders to 24 ,2 cycle diesels did any & everything our country needed! WOW!!!!!!
Do you know the reason for the clicking when you first tried to start the engine. Having a similar problem and guessing it's just a corroded connection.
The clicking is the starter motor's teeth grinding out of sync against the flywheel. It will cause either the starter to get jammed on the flywheel or will cause all the teeth to get grounded away.
It is not the teeth eating up the gears...smh it is one of a few things, the starter solenoid is pulling in, that is the click, however there isn't enough power to turn the engine over, while it may be true that the drive gear is moving into the flywheel from the solenoid moving, some starters do this some don't, it is not hurting anything, either the jumper cable connection was bad, which it looks like it was since he just reclamped it and it worked, it could be a bad connection, a bad cable, a corroded solenoid contact which happens a lot on boats, or a weak battery. Check those things and you will find your problem. One test is put a volt meter on the starter SOLENOID terminals, not the starter terminal after the solenoid, but the wire comming from the battery, and try to crank it, if it drops below about 10-10.5 volts it is a battery or wiring issue, if not its a starter/solenoid issue. One more tidbit, is that sometimes there is an intermediate solenoid and if that is the problem you will hear a click somewhere other than the starter, but get no power to the main solenoid.
actually marine diesels they always say run at a fast idle , 1000+rpm after you start for good oil pressure and stop cylinder bores glazing as well as running too cold causing other wear issues.cheers warren
It's not like today's modern engines with extremely tight tolerances running 5w 20 synthetic oils. Starting a low RPM older diesel and reving it won't hurt a thing. A lot of diesel generators rev to full running speed right from first start no matter how cold the temperature is. They have no issues with with premature wear from harsh cold starts. 🖒
My Yanmar sailboat engine starts at very low idle for 30 to 60 seconds and then kicks into normal RPM. When it kicks in big blast of soot leaves exhaust. Boat yard has already changed injectors and this did not help. Any thoughts?
Throw a shaft and a Prop on it and take your picnic table out fishing LOL B TW i saw the motor on Ebay and the link didn’t work to the video so I just RU-vidd it untill i reckonized the same Thumbnail the picture on Ebay had Ive always liked these Yanmars and i never know when ill need some in my next project boat
The engine space would quickly overheat with a radiator. My Perkins diesel boat engine has a heat exchanger and extra raw water pump so there is regular antifreeze in the engine. The seawater cools the heat exchanger then goes out the exhaust. The heat exchanger is 16 inches long and 4 inches diameter and as an automotive radiator cap on it.
I have a boat with a 2.2 4 cylinder Indenor diesel and it just has antifreeze coolant that runs through 2 long pipes under the ship to cool it, no sea water!
The exhaust pipe has another pipe inside it which reaches almost to the end of the outside pipe. This inside pipe often rusts and causes trouble. Stainless Steel replicas of the OEM pipe can be bought for about $110.
crowmagg1 it's not bad at all. Its a marine diesel so the use of rubber exhaust length can be used without causing a fire, or risking a fire hazard as the water cools the hose
Stephen Tuttle The manual from my boat’s diesel says to warm it up at 2/3 of Max rated RPM. I can’t bring myself to doing that but I do idle it about 1200 RPM till it warms up a bit.
