Hi all,
I have an SE106 I purchased in 8/09. It's on a wellcraft sportsman248 with a merc 5.7. Broken in and serviced regularly.
The drive operates fine. I have started to notice a rattle type sound that doesn't change with RPM or if it is gear or not.
This weekend after a short run I was at idle, in neutral and FELT and heard a loud knocking like a slamming noise. This can be felt through the whole boat like something was hitting the transom. Engine idled fine and didn't stumble or anything. There was no real rhythm to sound.
Trying to localize the noise it seems to be coming from the upper unit. After shutting down looking around with the drive up nothing seemed out of place.
Lowered the drive and started up again. In gear at idle the noise continued, slightly adjusting the drive trim made no change, nor does turning the wheel side to side.
Noise happened for a while then just stopped. I ran the boat at 3000 on plane about 5 miles with no noise. Fished for a while occasionally shutting down then and restarting for my drift.
Noise came back so I decided not to push my luck. Drove back 6 miles to port heard it only once or twice again.
Went back this morning and started it up but no noise.
I'm pretty convinced it's the upper unit starting to go but not sure what parts internally would cause this.
Since the 4th is coming I (unfortunately) ordered a new drive and plan to send this back for RMA once I pull the boat and get the serials.
Any idea what may cause it?
I have an SE106 I purchased in 8/09. It's on a wellcraft sportsman248 with a merc 5.7. Broken in and serviced regularly.
The drive operates fine. I have started to notice a rattle type sound that doesn't change with RPM or if it is gear or not.
This weekend after a short run I was at idle, in neutral and FELT and heard a loud knocking like a slamming noise. This can be felt through the whole boat like something was hitting the transom. Engine idled fine and didn't stumble or anything. There was no real rhythm to sound.
Trying to localize the noise it seems to be coming from the upper unit. After shutting down looking around with the drive up nothing seemed out of place.
Lowered the drive and started up again. In gear at idle the noise continued, slightly adjusting the drive trim made no change, nor does turning the wheel side to side.
Noise happened for a while then just stopped. I ran the boat at 3000 on plane about 5 miles with no noise. Fished for a while occasionally shutting down then and restarting for my drift.
Noise came back so I decided not to push my luck. Drove back 6 miles to port heard it only once or twice again.
Went back this morning and started it up but no noise.
I'm pretty convinced it's the upper unit starting to go but not sure what parts internally would cause this.
Since the 4th is coming I (unfortunately) ordered a new drive and plan to send this back for RMA once I pull the boat and get the serials.
Any idea what may cause it?
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