dgold_881
Cadet
- Joined
- May 30, 2008
- Messages
- 8
* Fresh Water Only Boat * Arizona Boat* Last season I installed a fresh rebuilt 7.4L long block 454 into my 22' 1990 Cobalt 223 due to the previous block having a crack in it. The only other item that was replaced was the oil cooler. I didn't replace the exhaust manifolds or risers.
Last season boat ran great no issues that were noticed. This year had the boat out maybe 20 mins and decided to check the engine because I heard a ticking noise. I could see the star board side valve cover was leaking the tan oil and the Riser seemed extremely hot. The boat temp was running at 150. The oil is a tan color not all the way emulsified creamy white. I was able to pump out the oil through the dip stick tube with no issues. I was thinking maybe I had a cracked manifold and water may be slightly pouring back into the cylinder causing the tan colored oil. But today after removing the riser it doesn't appear that any water was back flowing into any of the cylinders nor was the gasket from the riser to the manifold didn't appear compromised due to the perfect rust rings that were left behind after removing it also the exhaust manifold still held water. I don't want to replace just the manifold if it may be a intake gasket or head gasket. Is there a way I can test the integrity of the intake of head gaskets with out removing them to visually inspect the gasket? There is no rust in the exhaust valve area. Any help or ideas of what may be the cause or what to look for would greatly appreciated.
Darin
Last season boat ran great no issues that were noticed. This year had the boat out maybe 20 mins and decided to check the engine because I heard a ticking noise. I could see the star board side valve cover was leaking the tan oil and the Riser seemed extremely hot. The boat temp was running at 150. The oil is a tan color not all the way emulsified creamy white. I was able to pump out the oil through the dip stick tube with no issues. I was thinking maybe I had a cracked manifold and water may be slightly pouring back into the cylinder causing the tan colored oil. But today after removing the riser it doesn't appear that any water was back flowing into any of the cylinders nor was the gasket from the riser to the manifold didn't appear compromised due to the perfect rust rings that were left behind after removing it also the exhaust manifold still held water. I don't want to replace just the manifold if it may be a intake gasket or head gasket. Is there a way I can test the integrity of the intake of head gaskets with out removing them to visually inspect the gasket? There is no rust in the exhaust valve area. Any help or ideas of what may be the cause or what to look for would greatly appreciated.
Darin
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