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Old 02-17-2014, 07:48 PM   #1
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Slick

So I was puttering around today, ran the FL120 up to temp. against the dock lines. Not sure what "normal" is really. This is at about 800 rpm:



No smoke to speak of, but the is an oil contribution to the lake. Thoughts?
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Old 02-17-2014, 08:12 PM   #2
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sure it was oil or just diesel?... I think oil should have had a much more rainbow appearance....
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Old 02-17-2014, 08:22 PM   #3
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Oh, maybe unburned diesel? It did increase as I throttled up. Perhaps I just need a good long run to sort things out?
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Old 02-17-2014, 08:27 PM   #4
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Oh, maybe unburned diesel? It did increase as I throttled up. Perhaps I just need a good long run to sort things out?
could be a bad oil cooler
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Old 02-17-2014, 08:29 PM   #5
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Taking lessons from our Perkins......
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Old 02-17-2014, 08:36 PM   #6
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does it go away when the engine is warmed up or if you increase the load?
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Old 02-17-2014, 09:18 PM   #7
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Nope, I took the pic after warmed up, if I increase the load it gets worse.

This is between 1100-1200 rpm:
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Old 02-17-2014, 09:59 PM   #8
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Maybe a turbo seal. Hope it is not more serious.
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Old 02-17-2014, 11:22 PM   #9
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If that's a Lehman, it's normal. It's a bit embarrassing but it will evaporate. It's the British contribution to global whosis.

If you have your injectors rebuilt some of that will go away. Adjust your valves. If you can, warm up at 1000 rpm.
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Old 02-18-2014, 05:46 AM   #10
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Looks more like oil than diesel...but very hard to tell...usually after being warm there is a "slight" amount of diesel in the exhaust and it is way less than when cold so if more upon throttling up it's really not normal in y experience.

If oil not sure what it might be but not good...if diesel maybe injectors but that amount when warm isn't good in my estimation.

good point by Capt Jerry...if your coolers are more than a couple years old pressure test them or replace and see if it lessens to a little which would be considered "normal"...of course if the injectors haven't bee serviced in years...not a bad idea either.
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Old 02-18-2014, 08:40 AM   #11
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Looks more like oil than diesel...but very hard to tell...usually after being warm there is a "slight" amount of diesel in the exhaust and it is way less than when cold so if more upon throttling up it's really not normal in y experience.

If oil not sure what it might be but not good...if diesel maybe injectors but that amount when warm isn't good in my estimation.

good point by Capt Jerry...if your coolers are more than a couple years old pressure test them or replace and see if it lessens to a little which would be considered "normal"...of course if the injectors haven't bee serviced in years...not a bad idea either.
you could also put a jumper on the coolers and see if it stops,the tranny has a cooler also,check the oil in the engine and tranny and see if it went down?
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Old 02-18-2014, 09:30 AM   #12
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Dave

On the one hand Cyclone from Paynters Bay won't threaten to shoot you you since you don't run your engine with coolant. But on the other hand he hasn't yet spoken on how oil losers should be treated.
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Old 02-18-2014, 07:12 PM   #13
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I'll get all those things checked out soon. The engine starts and runs good, I want to keep it that way. Serves me right for buying a 40 year old boat I guess. But I did love my McCormick WD-6.
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