1995 Mariner 60 3 cylinder
It won't run above 4000rpm. At idle and below 4k it runs as normal.
I have changed the plugs.
I took the boat out today and ran some tests.
1. Idle only goes up to 4700 at full throttle.
2. Running reverse, same results as running forward. 4000 max.
3. Disconnected spark on each cylinder one at a time. Engine would barely run each time.
4. Switched to portable gas tank. No change in performance.
I am wondering if it could be the ignition module? I had to change it a couple of years ago when it completely failed.
I haven't done a compression test yet. My tester is at home. I am at the cottage.
It won't run above 4000rpm. At idle and below 4k it runs as normal.
I have changed the plugs.
I took the boat out today and ran some tests.
1. Idle only goes up to 4700 at full throttle.
2. Running reverse, same results as running forward. 4000 max.
3. Disconnected spark on each cylinder one at a time. Engine would barely run each time.
4. Switched to portable gas tank. No change in performance.
I am wondering if it could be the ignition module? I had to change it a couple of years ago when it completely failed.
I haven't done a compression test yet. My tester is at home. I am at the cottage.