Oil Water??
05-28-2006, 12:38 PM
#1
Oil Water??
Stock HP 500 Carb. Popped the hose off the water pump to begin to change the impeller and oil poured out. I was told its due to a bad oil cooler. Could it be anthing else?? There is no water in the oil, dipstick is clean, no water in valve covers.
05-28-2006, 05:23 PM
#3
Re: Oil Water??
I am having the same issue with my 525 (closed loop cooling). Oil was in the coolant tank when I got the boat, I drained and cleaned it to the best of my ability, but here we go again, it's back... 
I was thinking about the oil cooler as well. Engine runs great and there's no water in the oil, but the level on the dipstick does reflect what's going into the coolant tank. Anybody else have this problem? Does this warrant a replacement? How much do these things cost and how much of a pain are they to replace?
Think I'll call Merc this week about this. Boat was like this before I bought it (dealer pictures show an almost black coolant tank and I thought it was just bad lighting at the time), and see if there's any solution that won't cost too much money. I know that these things have very short warranties but you never know...
I was thinking about the oil cooler as well. Engine runs great and there's no water in the oil, but the level on the dipstick does reflect what's going into the coolant tank. Anybody else have this problem? Does this warrant a replacement? How much do these things cost and how much of a pain are they to replace? Think I'll call Merc this week about this. Boat was like this before I bought it (dealer pictures show an almost black coolant tank and I thought it was just bad lighting at the time), and see if there's any solution that won't cost too much money. I know that these things have very short warranties but you never know...
05-28-2006, 08:57 PM
#6
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Re: Oil Water??
Another thing to check is the water passage in aluminum manifolds, that one sneaks up on guys. I have seen Merc Merc EFI's go bad on 4 years old engine in salt, it is rare in fresh water but does happen.
Phil
Phil
05-28-2006, 10:00 PM
#7
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Re: Oil Water??
Originally Posted by UNSANE
hmmm.......but the engine runs great, is there any other way to visually inspect this issue?
05-28-2006, 10:22 PM
#8
Re: Oil Water??
So if everything has run perfect to this time and there is no water in the oil, low oil level, oil in the water pump, oil cooler is bad??? Is there any other possibilty??
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