wellcraftexcelcrap
Cadet
- Joined
- Dec 6, 2011
- Messages
- 13
Ok Here's the story...What is the possible problem(s)?.
Out on the water I ran at 3,700 RPM for about 5 minutes and took back down to 1,500 RPM and motor immediately died. Motor restarted under load (in gear) but ran extremely rough and died under 2000 RPMs' but lasted long enough to make the 20 minute trip back to the loading ramp. At the ramp I noticed oil coming out of the exhaust!!! Engine was not overheating.
Upon further inspection, the engine would tour over but not restart, the engine oil level was above the high mark which I assume means there was water getting into the engine. I have removed the oil but oil did not appear milky. I will compare to clean oil for further verification. I run in salt water and the boat is trailered and always flushed with fresh water after use. The engine on this boat was replaced in 2004 with a GM 350 Crate engine and I am not sure when the risers and manifolds were replaced. This is raw water cooled engine. The drive is Volvo Penta SP. The boat is a 1993 Wellcraft Excel 23.5.
I did a compression test. No water came out when spark plugs were removed, engine turns over, and had apx. 135 - 170 PSI compression on port Cylinders and 150-160 PSI compression on starboard cylinders. I removed port riser and exhaust manifold and noticed rust/scaling in raw water ports. I also noticed some sign if leakage at gasket between riser and manifold. I suspect it may be time to replace risers and exhaust manifolds. What are other tests and inspections I can do? Do these symptoms lead to a common hypothesis? What would cause oil to come out of exhaust...Am I over overthinking that could be more obvious????:facepalm:
Out on the water I ran at 3,700 RPM for about 5 minutes and took back down to 1,500 RPM and motor immediately died. Motor restarted under load (in gear) but ran extremely rough and died under 2000 RPMs' but lasted long enough to make the 20 minute trip back to the loading ramp. At the ramp I noticed oil coming out of the exhaust!!! Engine was not overheating.
Upon further inspection, the engine would tour over but not restart, the engine oil level was above the high mark which I assume means there was water getting into the engine. I have removed the oil but oil did not appear milky. I will compare to clean oil for further verification. I run in salt water and the boat is trailered and always flushed with fresh water after use. The engine on this boat was replaced in 2004 with a GM 350 Crate engine and I am not sure when the risers and manifolds were replaced. This is raw water cooled engine. The drive is Volvo Penta SP. The boat is a 1993 Wellcraft Excel 23.5.
I did a compression test. No water came out when spark plugs were removed, engine turns over, and had apx. 135 - 170 PSI compression on port Cylinders and 150-160 PSI compression on starboard cylinders. I removed port riser and exhaust manifold and noticed rust/scaling in raw water ports. I also noticed some sign if leakage at gasket between riser and manifold. I suspect it may be time to replace risers and exhaust manifolds. What are other tests and inspections I can do? Do these symptoms lead to a common hypothesis? What would cause oil to come out of exhaust...Am I over overthinking that could be more obvious????:facepalm:
