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Old 04-14-2013, 04:02 PM   #1
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more smoke (help)

I'm running against a 1/2 knot tide and I'm getting considerably more white/gray smoke on both engines a bit more on one?

Update:
Running with tide now and same smoke. Fuel added the other day had a little gas still in the fuel hose (maybe as much a few gallons, but I don't know for sure, all on a 193 gallon load). Could the gas be the smoke? Seems to be fuel related as the smoke seems to be higher in both engines.
albeit higher on one then the other. Nothing extreme but much more then my engines normally have.
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Old 04-14-2013, 05:45 PM   #2
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Going with or against a tide should have no effect on the engine load. The speed through the water is the same.

So maybe it is the fuel.

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Old 04-14-2013, 06:41 PM   #3
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I'm running against a 1/2 knot tide and I'm getting considerably more white/gray smoke on both engines a bit more on one?

Update:
Running with tide now and same smoke. Fuel added the other day had a little gas still in the fuel hose (maybe as much a few gallons, but I don't know for sure, all on a 193 gallon load). Could the gas be the smoke? Seems to be fuel related as the smoke seems to be higher in both engines.
albeit higher on one then the other. Nothing extreme but much more then my engines normally have.
If you didn't have smoke before and it started when you took on fuel, the fuel is most likely the cause of the smoke.

I don't know how you got gasoline mixed with your fuel and I don't know what effect gasoline would have (except possibly reduced lubrication of injectors, etc.).

Can you go back to the fuel supplier and ask them to fix the problem? Or at least pump the contaminated fuel out?

Otherwise, I suspect each time you take on (good) fuel, the existing fuel will be diluted and eventually the problem will resolve itself.
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Old 04-14-2013, 08:53 PM   #4
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If you didn't have smoke before and it started when you took on fuel, the fuel is most likely the cause of the smoke.

I don't know how you got gasoline mixed with your fuel and I don't know what effect gasoline would have (except possibly reduced lubrication of injectors, etc.).

Can you go back to the fuel supplier and ask them to fix the problem? Or at least pump the contaminated fuel out?

Otherwise, I suspect each time you take on (good) fuel, the existing fuel will be diluted and eventually the problem will resolve itself.
I agree, I would be taking on more fuel as soon as there is room.
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Old 04-14-2013, 10:29 PM   #5
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If you didn't have smoke before and it started when you took on fuel, the fuel is most likely the cause of the smoke.

I don't know how you got gasoline mixed with your fuel and I don't know what effect gasoline would have (except possibly reduced lubrication of injectors, etc.).

Can you go back to the fuel supplier and ask them to fix the problem? Or at least pump the contaminated fuel out?

Otherwise, I suspect each time you take on (good) fuel, the existing fuel will be diluted and eventually the problem will resolve itself.
There was some in the tanker's hose but I don't know yet how much. I think he may have cooked my injectors.
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Old 04-15-2013, 06:21 AM   #6
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What color is the smoke?
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Old 04-15-2013, 07:41 AM   #7
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asap

Pump out bad fuel
Do an oil change
Change fuel filters
Pray

If you suspect gas in trucked in fuel water could be there too. Good luck and by the way- always buy fuel from a large on shore known supplier.
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Old 04-15-2013, 07:54 AM   #8
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What color is the smoke?
White/grey
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Old 04-15-2013, 07:55 AM   #9
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asap

always buy fuel from a large on shore known supplier.

I did/do
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Old 04-15-2013, 07:57 AM   #10
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I doubt there is enough gasoline to make a difference if it "may have been" only a couple of gallons. IF you think (lack of) lubricity is to blame you could add a quart of 2 cycle oil to improve it.
It could also be bad (low quality) diesel. I have seen this before.

You can always take a fuel sample and send it to an oil analysis lab.
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Old 04-15-2013, 08:11 AM   #11
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I did/do
A truck with a hose is not a known on shore supplier. A Chevron sign on a dock is - the Coal Harbor floating barge excepted of course. Saving money can get expensive.

Last summer I blew an aftercooler with lots of grey white smoke due to water ingestion. Water is hard on injectors too.
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Old 04-15-2013, 08:30 AM   #12
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Last fall we took on 476 gallons of diesel in Trinidad. Lots of smoke that caused a "black" transom. For us it was the fuel. Trinidad does their own refining and no EPA to worry about. We've burned through over half of the fuel and the fuel burn numbers haven't changed.

I agree with jleonard. A little gas shouldn't hurt a diesel engine like a FL120. They can run on just about anything.
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Old 04-15-2013, 08:33 AM   #13
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A truck with a hose is not a known on shore supplier. A Chevron sign on a dock is - the Coal Harbor floating barge excepted of course. Saving money can get expensive.

Last summer I blew an aftercooler with lots of grey white smoke due to water ingestion. Water is hard on injectors too.
I hear you. They are a known trusted supplier that I have used and many of the megayachts use.
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Old 04-15-2013, 09:31 AM   #14
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Daddyo

Do you have an onboard fuel transfer system which would allow you to isolate the bad fuel in one or two tanks and then put good fuel in the others?
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Old 04-15-2013, 09:42 AM   #15
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Is it possible that the "white/gray smoke" is actually steam from water in the fuel?
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Old 04-15-2013, 09:58 AM   #16
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I just talked with the delivery guy and I'm now confident it was less then a gallon of gas so it's not that. I have to believe it would be some water. I can isolate the tank but I need that fuel for my offshore passage. I guess I'll just burn through it. If you look at the video from the "underway today" thread then you will see the smoke I'm referring to. Nothing huge but definitely more then I've had in the past.
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Old 04-15-2013, 10:03 AM   #17
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I just talked with the delivery guy and I'm now confident it was less then a gallon of gas so it's not that. I have to believe it would be some water. I can isolate the tank but I need that fuel for my offshore passage. I guess I'll just burn through it. If you look at the video from the "underway today" thread then you will see the smoke I'm referring to. Nothing huge but definitely more then I've had in the past.
Be sure to keep checking your filters and drain any water you find.
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Old 04-15-2013, 11:47 AM   #18
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I added what little bit of Sea Foam I had (6oz) and the smoke is half what it was I guess I'm off to sea after all
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Old 04-15-2013, 03:51 PM   #19
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What are the ambient temperatures doing in your area? Our water-injection exhaust systems put out steam in the winter, none in the summer. The colder it is, the more steam comes from the exhaust. We've seen boats running in the winter with the entire back end of the boat enveloped in steam. For those boats with whatever exhaust systems they have, it's normal.
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Old 04-15-2013, 07:37 PM   #20
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80s. Turns out the little bit of SF didn't do much anything.
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