water in oil question
04-15-2019, 02:53 PM
#1
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water in oil question
I have a 2000 502 MPI that has water in the oil. The risers and manifolds look ok but are original with 153 hours on it. Compression test was good. I thought it was possibly just condensation from the winter. I changed the oil and ran the boat in the water for a hour to find the oil milky again. The motor was 100% winterized. Changed the oil again and re tested same result. Is the intake manifold a potential problem on this motor?
04-15-2019, 03:01 PM
#2
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Could be intake/intake gaskets. Did the motor come up to temp? I've seen stuck tstats do the same thing in colder weather/water.
04-15-2019, 03:47 PM
#3
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Yes replaced the T-stat with new. Motor was running at 170 deg.
04-15-2019, 03:54 PM
#4
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Is the oil filter full of sludge too? Personally, I’ve found milkshake from condensation doesn’t sludge up the filter so much.
Exhaust parts need need to be pressurized to find any issue but yours seem to be pretty low hours.
Pressure testing your oil coolers and even bypassing it for a run with fresh oil would be my next move.
Exhaust parts need need to be pressurized to find any issue but yours seem to be pretty low hours.
Pressure testing your oil coolers and even bypassing it for a run with fresh oil would be my next move.
04-15-2019, 04:51 PM
#5
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[QUOTE=TYPHOON;4682230 Is the intake manifold a potential problem on this motor?[/QUOTE]
I have seen it discussed here in the past that if you're in salt water and you're not FWC the intake manifolds can have a real problem . Something to do, I think , with salt deposits accumulating in parts of the manifold due to insufficient circulation in some areas.
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Not saying that this is your problem though .
I have seen it discussed here in the past that if you're in salt water and you're not FWC the intake manifolds can have a real problem . Something to do, I think , with salt deposits accumulating in parts of the manifold due to insufficient circulation in some areas.
.
Not saying that this is your problem though .
04-15-2019, 05:19 PM
#6
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Is the oil filter full of sludge too? Personally, I’ve found milkshake from condensation doesn’t sludge up the filter so much.
Exhaust parts need need to be pressurized to find any issue but yours seem to be pretty low hours.
Pressure testing your oil coolers and even bypassing it for a run with fresh oil would be my next move.
Exhaust parts need need to be pressurized to find any issue but yours seem to be pretty low hours.
Pressure testing your oil coolers and even bypassing it for a run with fresh oil would be my next move.
04-15-2019, 05:37 PM
#8
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I have a 2000 502 MPI that has water in the oil. The risers and manifolds look ok but are original with 153 hours on it. Compression test was good. I thought it was possibly just condensation from the winter. I changed the oil and ran the boat in the water for a hour to find the oil milky again. The motor was 100% winterized. Changed the oil again and re tested same result. Is the intake manifold a potential problem on this motor?
04-15-2019, 06:23 PM
#9
Platinum Member
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iTrader: (2)
Intake gaskets or intake itself. The intake is probably corroded at the passages. Common issue in salt water. My intakes have been repaired because of this with less hours.
04-15-2019, 06:43 PM
#10
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