Hello everyone. I love this forum and have received lots of help here. I just hate that I come around when their is a problem.
My issue is that my motor will not idle very well and has a rattle sound under the valve cover. My engine is a penta 3.0 1999, 135hp. Last summer I took it out to the lake and found it was running poorly. So I pulled her out of the water and checked oil, which had water in it. I then pulled the plug and found water in the cylinder. I drained oil, fogged the cylinders, and parked her for the summer. I recently pulled her out a took the engine apart. Head gasket was ok, the problem was in the exhaust riser elbow (not sure if that is the actual name). Found that water was flowing back into the manifold and leaking into the cylinders through the valves. I checked the head and block, everything was ok. I cleaned her up and put everything back together according to the manual. The only thing I question myself on was the rocker arm adjustment. I did as the book suggested and tightened them while the piston was at the top of its stroke. tightened until lash was gone, then turned an additional turn. Did so for each cylinder. I noticed that when I cycled the engine to the next cylinder to adjust the next two rocker arms (following firing order while doing so), that there was a little lash in the rocker arms that I had just adjusted, I assumed that was ok because the book stated that once I adjusted the two rocker arms for a cylinder, that was all the adjustment I had to do. Now the engine will only start with the throttle opened a bit and has trouble idling. I let her idle, with the throttle open just a bit, for about 20 min. It ran better and eventually started idling with no extra gas added, but would not start without the throttle open a bit. I also experience a constant rattling sound under the valve cover. After running a while, I checked oil and cylinder and everything is free of water. Any and all advice would be greatly appreciated.
Thanks in advance
Kent
My issue is that my motor will not idle very well and has a rattle sound under the valve cover. My engine is a penta 3.0 1999, 135hp. Last summer I took it out to the lake and found it was running poorly. So I pulled her out of the water and checked oil, which had water in it. I then pulled the plug and found water in the cylinder. I drained oil, fogged the cylinders, and parked her for the summer. I recently pulled her out a took the engine apart. Head gasket was ok, the problem was in the exhaust riser elbow (not sure if that is the actual name). Found that water was flowing back into the manifold and leaking into the cylinders through the valves. I checked the head and block, everything was ok. I cleaned her up and put everything back together according to the manual. The only thing I question myself on was the rocker arm adjustment. I did as the book suggested and tightened them while the piston was at the top of its stroke. tightened until lash was gone, then turned an additional turn. Did so for each cylinder. I noticed that when I cycled the engine to the next cylinder to adjust the next two rocker arms (following firing order while doing so), that there was a little lash in the rocker arms that I had just adjusted, I assumed that was ok because the book stated that once I adjusted the two rocker arms for a cylinder, that was all the adjustment I had to do. Now the engine will only start with the throttle opened a bit and has trouble idling. I let her idle, with the throttle open just a bit, for about 20 min. It ran better and eventually started idling with no extra gas added, but would not start without the throttle open a bit. I also experience a constant rattling sound under the valve cover. After running a while, I checked oil and cylinder and everything is free of water. Any and all advice would be greatly appreciated.
Thanks in advance
Kent