Black Smoke Yanmar 2GM20 - Page 2

GordMay · 13-06-2009, 07:17

This Link to Yanmar Help works
➥ Yanmar Marine Engine Help

URL: yanmarhelp.com/index.htm

Therapy · 15-06-2009, 17:32

Quote:

Originally Posted by mfeene01

I just went through the same thing with my 2GM20F. It took almost a year, a couple of sets of injectors and several mechanics until I found one who knew what he was doing.

Good luck.... MikeF

SHEESH!!!

Badsanta · 16-06-2009, 22:34

Some one asked the right question. When was the last time the boat was hauled and the bottom and prop cleaned. I vote for exhaust elbow or fowled prop

billmcc · 16-10-2009, 05:58

I sympathise - I have similar probs with a Yamnar1GM10. Will let you know how I eventually solve the problem. in the meantime see my posting "YANMAR 1GM10 SMOKEY NO POWER" for a list of the many efforts I have made so far. I am not going to let this beat me!!!!
Bill.

turkish6 · 02-11-2009, 20:57

We has a similar problem occur in last august but only when i was at max rpm. Black smoke with some black debris is water. power was fine. Did not use the boat for about month and seemed to get a little bit worse (smoked just below max rpm) and finally today at about half crusing speed it was smoking wit debris as usual. The boat was being hauled out today and once out of the water I could see that the prop was covered in barincales. Really badly covered... Could this be the cause of the smoking?

Solitude · 02-11-2009, 21:11

Quote:

Originally Posted by turkish6

We has a similar problem occur in last august but only when i was at max rpm. Black smoke with some black debris is water. power was fine. Did not use the boat for about month and seemed to get a little bit worse (smoked just below max rpm) and finally today at about half crusing speed it was smoking wit debris as usual. The boat was being hauled out today and once out of the water I could see that the prop was covered in barincales. Really badly covered... Could this be the cause of the smoking?

Yes !

Chief Engineer · 02-11-2009, 21:24

I see this all the time in the Chesapeake in the summer.

My first question is when did you last have your bottom cleaned prop checked.

This situation is taken advantage of by bad "mechanics".

As my Port Engineer taught me many miles ago.....Look for the simple things first.

Quote:

Originally Posted by turkish6

We has a similar problem occur in last august but only when i was at max rpm. Black smoke with some black debris is water. power was fine. Did not use the boat for about month and seemed to get a little bit worse (smoked just below max rpm) and finally today at about half crusing speed it was smoking wit debris as usual. The boat was being hauled out today and once out of the water I could see that the prop was covered in barincales. Really badly covered... Could this be the cause of the smoking?

Bilgediver · 04-11-2009, 04:21

Quote:

Originally Posted by Chief Engineer

The link to the Yanmar site is no good.

Can a bad cooling elbow cause black smoke decreased rpm under load?

Yes the elbow is the usual cause of black smoke on Yanmar engines as it cokes up and reduces the flow of exhaust gas so causing black smoke. I suspect all the OP needs to do is remove and clean the elbow and all will be back to normal with no need to rip of injectors or heads or fuel pumps.

riptide · 11-11-2009, 11:32

Have inj. pump gone through-also fuel starvation will cause black smoke and loss of power-had it happen with a clogged filter

13-06-2009, 07:17	#16
GordMay Registered User Join Date: Mar 2003 Location: Thunder Bay, Ontario - 48-29N x 89-20W Boat: C.L.O.D. (Cruiser Living On Dirt) Posts: 12,576	This Link to Yanmar Help* works* ➥ Yanmar Marine Engine Help URL: yanmarhelp.com/index.htm __________________ Gord May ~~_/)_~~ (Gord & Maggie - "Southbound") "If you didn't have time/$ to do it right in the first place, when will you get the time/$ to fix it?"

16-06-2009, 22:34	#18
Badsanta Registered User Join Date: Oct 2007 Location: virginia Boat: islandpacket Posts: 372	Some one asked the right question. When was the last time the boat was hauled and the bottom and prop cleaned. I vote for exhaust elbow or fowled prop __________________ That derelict boat was another dream for somebody else, don't let it be your nightmare and a waste of your life.

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16-10-2009, 05:58	#19
billmcc Registered User Join Date: Oct 2009 Posts: 15	I sympathise - I have similar probs with a Yamnar1GM10. Will let you know how I eventually solve the problem. in the meantime see my posting "YANMAR 1GM10 SMOKEY NO POWER" for a list of the many efforts I have made so far. I am not going to let this beat me!!!! Bill.

02-11-2009, 20:57	#20
turkish6 Registered User Join Date: Aug 2007 Posts: 90	We has a similar problem occur in last august but only when i was at max rpm. Black smoke with some black debris is water. power was fine. Did not use the boat for about month and seemed to get a little bit worse (smoked just below max rpm) and finally today at about half crusing speed it was smoking wit debris as usual. The boat was being hauled out today and once out of the water I could see that the prop was covered in barincales. Really badly covered... Could this be the cause of the smoking?

11-11-2009, 11:32	#24
riptide Registered User Join Date: Jul 2009 Posts: 28	Have inj. pump gone through-also fuel starvation will cause black smoke and loss of power-had it happen with a clogged filter