Moisture in valve cover
02-04-2017, 05:19 PM
#11
Registered
iTrader: (3)
Sounds to me like you have water getting in the engine.
I personally would do some tests, before just going out and beating on it, trying to get oil temp hotter.
Thousands and thousands of black mercruiser engines running around, without factory oil thermostats, or oil temperatures above 212, and no milkshake on their stuff.
If this was a fairly recent occurance, I'd start looking at a possible leaking intake gasket, corroded intake manifold, exhaust manifold leak, leaking exhaust guide, and so on.
I personally would do some tests, before just going out and beating on it, trying to get oil temp hotter.
Thousands and thousands of black mercruiser engines running around, without factory oil thermostats, or oil temperatures above 212, and no milkshake on their stuff.
If this was a fairly recent occurance, I'd start looking at a possible leaking intake gasket, corroded intake manifold, exhaust manifold leak, leaking exhaust guide, and so on.
02-04-2017, 06:41 PM
#14
Banned
iTrader: (9)
change my opinion - riser gaskets - or bad valve(s) causing water reversion. or what Mike said above.
I would pressure test exhaust / risesr still bolted together and do a comp test / leak down test
whats your spark plugs look like ???
I would pressure test exhaust / risesr still bolted together and do a comp test / leak down test
whats your spark plugs look like ???
Last edited by BUP; 02-04-2017 at 06:46 PM.
