Heart-Stopping Soot in Exhaust Moment

Ask an Expert !
Do you have a question about any aspect of YM designed boats?

Moderators: Eventide Owners Group, Piskie, chris s

MB63
Posts: 3
Joined: Wed October 10th, 2007, 4:24 pm
Location: Southampton

Heart-Stopping Soot in Exhaust Moment

Postby MB63 » Mon May 12th, 2008, 1:18 pm

On the way into Poole Harbour last week, a little burst of power was required from our Golden Hind 26's Bukh diesel when suddenly the exiting coolant water turned into a black stream.

At first I thought it was engine oil disappearing, but closer inspection suggested soot. Throttling back got rid of it.

Is this just something that these old engines do, or is it a sign of some terrible underlying problem?

Black Sheep
Posts: 4
Joined: Mon November 19th, 2007, 11:53 am

Postby Black Sheep » Tue May 20th, 2008, 5:18 pm

I had exactly the same experience on Black Sheep (GH26 with Bukh 10). My powers of observation weren't enough to distinguish between soot and oil - I just throttled back and started to worry about all the nasty things it could be.

But a friend with more experience than I suggested that it's quite common on older engines and nothing to worry about.

Black Sheep
Posts: 4
Joined: Mon November 19th, 2007, 11:53 am

Postby Black Sheep » Mon June 2nd, 2008, 2:51 pm

A further think and chat with those with more experience, suggests that the soot indicates incomplete combustion of the fuel. This could be caused by dirty/blocked air filters.

Must get round to checking mine...

User avatar
Eventide Owners Group
Posts: 224
Joined: Wed March 1st, 2006, 1:00 pm
Contact:

Postby Eventide Owners Group » Tue June 10th, 2008, 12:28 am

Yes sounds as if the Air filters need cleaning and the motor needs a good run. You might have to clean out the exhaust if it is very bad, but a wet exhaust should almost self clean...

If it persists, get the injector checked.

John
Web site Coordinator


Return to “HELP ?”

Who is online

Users browsing this forum: No registered users and 1 guest