Yse8 Has A Knock,ringing, Sound

ocbew · #1 (**permalink**) 06-09-2010

i put my engine on youtube under (yanmar yse8). if you have or had one mabe you could lisin to it an tell me if it sounds normal.
thank you
rj

ps it's in a 25' irwin 10/4

YouTube - yanmar yse8

Markolone · #2 (**permalink**) 10-24-2010

It's sound similar to the mine, that's works very fine

Faster · #3 (**permalink**) 10-24-2010

Agree it sounds fine.. but to be honest I didn't listen to all 7 minutes of it!

okawbow · #4 (**permalink**) 10-24-2010

Mine sounds like that sometimes, but new straight, rotella 30wt oil, and good clean 45 cetane fuel quiets it down some. Best thing you can do for it, is to run it under load, at over 80% revs for a few hours.

dabnis · #5 (**permalink**) 10-25-2010

Quote:

Originally Posted by ocbew

i put my engine on youtube under (yanmar yse8). if you have or had one mabe you could lisin to it an tell me if it sounds normal.
thank you
rj

ps it's in a 25' irwin 10/4

YouTube - yanmar yse8

I listened to all 7 minutes, sounds like the noise is "metallic" rather
than "combustion"? Some diesels that I have heard have a loud
knocking or pinging sound when cold that moderates or goes away
after fully warmed up. Don't know if your engine was fully warmed
up? It would be interesting if the noise appeared abruptly or came
on gradually over time?

Dabnis

Faster · #6 (**permalink**) 10-25-2010

An injector that's not properly atomizing can produce a pronounced 'ping' that sounds quite mechanical.. I didn't hear that there, but it's something to look at. Have the injector tested/serviced and see if it quietens down.

That condition normally also produces some grey/brown smoke too, though.....

fcsob · #7 (**permalink**) 10-26-2010

Sounds like an injector to me. Open each injector line & see if the sound changes,if it does you have found the noise.

Faster · #8 (**permalink**) 10-26-2010

Quote:

Originally Posted by fcsob

Sounds like an injector to me. Open each injector line & see if the sound changes,if it does you have found the noise.

Good plan, but it's a single cylinder.. I'm pretty sure the sound will change if it's 'opened'....

erps · #9 (**permalink**) 10-26-2010

Quote:

Originally Posted by Faster

Good plan, but it's a single cylinder.. I'm pretty sure the sound will change if it's 'opened'....

LOL.