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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Yanmar baffling black smoke
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Diesel This is a forum dedicated to diesel engines and their applicable accessories.


Thread: Yanmar baffling black smoke Reply to Thread
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Topic Review (Newest First)
08-03-2012 10:44 AM
PorFin
Re: Yanmar baffling black smoke

Thierry,

Terry Springer hasn't posted here in several years. Reading his later threads about selling his boat, it looks like he replaced the engine with another 4JH4 turbo at some point later in 2010.
08-03-2012 06:42 AM
Thierry42
Re: Yanmar baffling black smoke

Try to contact Tspringer but I cannot send PM because not enough post replies... Can someone send his a PM in order to get an answer to this thread (inportant for me)?

Thanks.
08-03-2012 06:38 AM
Thierry42
Re: Yanmar baffling black smoke

Hi, reading your 2010 post on your Yanmar headache with black soot.

I have exactly the same symptoms on my Yanmar engine. Spend also a lot of money, with different trials and parts change and nothing has changed.

How have you end of doing for fixing that issue? How was compression test? Thanks for the reply.
02-19-2010 11:00 PM
CarelessNavigator Before this thread goes into oblivion, I was wondering what was happening? I am sure lots of other people here were wondering the same.

I would like to know the conclusion if or when it happens, not that it is really any of my business but it would be appreciated.
01-28-2010 03:54 AM
sigmasailor I read that the nozzles were replaced by nozzles you found on the boat as spare parts. Are these the correct nozzles?
01-27-2010 11:55 PM
bljones I am surprised at no compression test as well. If the mechanic doesn't have the tools to do a compression test, find another mechanic.
01-27-2010 11:15 PM
CarelessNavigator Once you have compression established then you can proceed to the next logical step.

You said you have already checked the intake for obstructions also don't forget to take into account leaking pressure on the turbo output. I know you'll have to do that later.

You also said that you checked the exhaust for obstruction and also checked the prop and shaft for drag etc and your results were OK with them. As long as nothing was missed or overlooked and providing the compression is good the next thing is to check out the injector pump. I am assuming everything on that engine is mechanical.
01-27-2010 11:10 PM
Danny33 Did not read the full post ...but whats the air filter / air in take looking like ?
01-27-2010 11:00 PM
CarelessNavigator
Quote:
Originally Posted by Tspringer View Post
No compression test, I do not have a means of doing this as my tester has no adaptor that will work on this engine.

The Yanmar dealer did not do one either, even when the injectors were out of the engine. This angers me.... but he said the engine did not need it as it was clear it had good compression. Well, its NOT clear to me at this point. Nothing is.


Terry
I am dumbfounded. A compression test is one of the first things you should check after the very basics. He can tell if the compression is good buy saying it is clear that it had good compression. Wow that guy is good, if he was a magician he would be Bozo the clown.

There has got to be an adapter to do a compression test on your engine if you cannot find one make one. One of the easiest ways is to use an old glow plug get the diameter and thread pitch from it and what ever you can to adapt it and go from there.
01-27-2010 10:32 PM
Tspringer No compression test, I do not have a means of doing this as my tester has no adaptor that will work on this engine.

The Yanmar dealer did not do one either, even when the injectors were out of the engine. This angers me.... but he said the engine did not need it as it was clear it had good compression. Well, its NOT clear to me at this point. Nothing is.


Terry
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