First, a little back story:
A month ago (in April) we purchased a 1976 19' Reinell cuddy with a 1990 GM 120hp 4 cylinder motor and the original (although rebuilt two years ago) OMC stringer outdrive. When we were out on the test ride, the engine started fine and seemed to run fine. The boat got up on a plane and steered and shut off fine. After about 10 minutes, we restarted it and my wife went out for a few minutes (with the old owner) for a quick check ride. So we made the purchase. Last week, I hooked up the garden hose to the flush fitting on the outdrive and went to start the motor. It cranked about a half crank and the made a grinding noise. This I found was a broken starter mount, so I replaced the starter. After I installed the starter, I cranked the motor (without the garden hose on) for just a half second to make sure I installed the starter correctly. No problem there. So I then turned on the garden hose to run the engine. Herein lies the problem: AFter I turned the hose on the starter would not even turn the engine over. I could tell the starter was trying to turn it over, so not wanting to break another starter, I shut it off. I pulled the spark plugs and you guessed it...water in all four cylinders. Because the water was in all four cylinders, I'm thinking it probably isn't the head gasket. I have yet to do a compression test (I'll do one on Thursday).
Assuming the compression tests on the cylinders is good, is there any other place the water can be coming in? Do I have too much water coming in from the hose? I've read in the forums about an exhaust flapper allowing water to come in through the exhaust, but I can't find anything in the manuals about where it is or how to replace it. I suspect it could be the intake manifold, but I'm not sure. Any ideas?
A month ago (in April) we purchased a 1976 19' Reinell cuddy with a 1990 GM 120hp 4 cylinder motor and the original (although rebuilt two years ago) OMC stringer outdrive. When we were out on the test ride, the engine started fine and seemed to run fine. The boat got up on a plane and steered and shut off fine. After about 10 minutes, we restarted it and my wife went out for a few minutes (with the old owner) for a quick check ride. So we made the purchase. Last week, I hooked up the garden hose to the flush fitting on the outdrive and went to start the motor. It cranked about a half crank and the made a grinding noise. This I found was a broken starter mount, so I replaced the starter. After I installed the starter, I cranked the motor (without the garden hose on) for just a half second to make sure I installed the starter correctly. No problem there. So I then turned on the garden hose to run the engine. Herein lies the problem: AFter I turned the hose on the starter would not even turn the engine over. I could tell the starter was trying to turn it over, so not wanting to break another starter, I shut it off. I pulled the spark plugs and you guessed it...water in all four cylinders. Because the water was in all four cylinders, I'm thinking it probably isn't the head gasket. I have yet to do a compression test (I'll do one on Thursday).
Assuming the compression tests on the cylinders is good, is there any other place the water can be coming in? Do I have too much water coming in from the hose? I've read in the forums about an exhaust flapper allowing water to come in through the exhaust, but I can't find anything in the manuals about where it is or how to replace it. I suspect it could be the intake manifold, but I'm not sure. Any ideas?
