Monterey296Twin5.0Gi
Seaman Apprentice
- Joined
- Jan 21, 2020
- Messages
- 45
Raw water cooled, and lives in a slip. First thing I want to ask is if you can check or change an impeller in the engine pump with the boat in the water?
It is only the Port engine with the problem. It starts/idles great, runs fine in lower rpms, and as you accelerate, it gets all the way up to 2400-2500 RPM and then it cuts to 1600 RPM. When it first happened I was able to pull back and reapply the throttle and "get past" that point in the RPM and throttle up to get on plane, but I don't want test run again until I have it looked at or check some things myself.
All gauges look fine, temp and oil. Oil is a little high in the Port engine, I thought about pulling some out to get it at the top line or below. When we changed the oil we were very careful with the amount we put in, so seeing it reading a little higher than the line was odd. I changed fuel w/s filters and drained the old ones into jars and they looked fine. The Port engine's filter did look like it had been leaking or sweating fuel, it had a varnish baked on the outside. Stbd engine's filter was still white.
I thought I would first try to check water pump impeller, sensors, and pulling out a little oil. The problem doesn't seem fuel related, but I only say that because it seems to occur at a predictable RPM point and be a deliberate cut in power like a protection mode. Any ideas and answers to my impeller question are appreciated.
It is only the Port engine with the problem. It starts/idles great, runs fine in lower rpms, and as you accelerate, it gets all the way up to 2400-2500 RPM and then it cuts to 1600 RPM. When it first happened I was able to pull back and reapply the throttle and "get past" that point in the RPM and throttle up to get on plane, but I don't want test run again until I have it looked at or check some things myself.
All gauges look fine, temp and oil. Oil is a little high in the Port engine, I thought about pulling some out to get it at the top line or below. When we changed the oil we were very careful with the amount we put in, so seeing it reading a little higher than the line was odd. I changed fuel w/s filters and drained the old ones into jars and they looked fine. The Port engine's filter did look like it had been leaking or sweating fuel, it had a varnish baked on the outside. Stbd engine's filter was still white.
I thought I would first try to check water pump impeller, sensors, and pulling out a little oil. The problem doesn't seem fuel related, but I only say that because it seems to occur at a predictable RPM point and be a deliberate cut in power like a protection mode. Any ideas and answers to my impeller question are appreciated.