Heart-Stopping Soot in Exhaust Moment

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

Heart-Stopping Soot in Exhaust Moment

Post by MB63 »

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

Post by Black Sheep »

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

Post by Black Sheep »

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...
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Eventide Owners Group
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Joined: Wed March 1st, 2006, 1:00 pm
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Post by Eventide Owners Group »

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
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