ohioriverrider
Cadet
- Joined
- Apr 4, 2022
- Messages
- 6
I have scoured the internet now and haven’t seen the same issue encountered that wasn’t a motor positioning issue so I’ll ask it here.
I have a 2018 75HP Mercury four stroke on a 2018 Bayliner e16 (factory engine). I’ve owned the boat for a few years never had an issue getting a tell tail at any speed. Two weeks ago when leaving the dock the engine put itself into smart gaurd mode shortly after getting up to around 4000 RPMs on plane, when I turned around to look at the motor I noticed the tell tail had sputtered and stopped. Once I brought the motor back down to idle the tell tail returned with excellent flow. Happened a few more times on the way back in to the dock. A guy gave me a can of wd40 to spray into the water intake and this totally fixed the issue completely but I played it cautious and pulled the boat from the water and changed the impeller and gaskets.
Put the boat back in the water after changing the impeller and it ran fine, drove the boat for a week almost every day pulling kids on the tube and cruising up river full throttle without any issue.
Until yesterday when going out after letting the boat sit a few days the same behavior re-emerged. This time the Wd-40 trick didn’t help. I tried backflushing the motor using a fresh water hose we have at the dock for a few minutes and it didn’t help either.
Again, tell-tail TOTALLY PRESENT AND STRONG AT IDLE AND LOWER RPMs. Only cuts out when up and moving on plane. I’ve ordered a whole new impeller and housing and thermostat although I don’t believe they will make a difference as the thermostat wouldn’t impede water flowing through the tell-tail and the impeller housing was in great shape when I checked it just the other week.
FYI I don’t believe this motor is equipped with a poppet valve.
Anyone encounter a similar issue? Totally stumped here.
I have a 2018 75HP Mercury four stroke on a 2018 Bayliner e16 (factory engine). I’ve owned the boat for a few years never had an issue getting a tell tail at any speed. Two weeks ago when leaving the dock the engine put itself into smart gaurd mode shortly after getting up to around 4000 RPMs on plane, when I turned around to look at the motor I noticed the tell tail had sputtered and stopped. Once I brought the motor back down to idle the tell tail returned with excellent flow. Happened a few more times on the way back in to the dock. A guy gave me a can of wd40 to spray into the water intake and this totally fixed the issue completely but I played it cautious and pulled the boat from the water and changed the impeller and gaskets.
Put the boat back in the water after changing the impeller and it ran fine, drove the boat for a week almost every day pulling kids on the tube and cruising up river full throttle without any issue.
Until yesterday when going out after letting the boat sit a few days the same behavior re-emerged. This time the Wd-40 trick didn’t help. I tried backflushing the motor using a fresh water hose we have at the dock for a few minutes and it didn’t help either.
Again, tell-tail TOTALLY PRESENT AND STRONG AT IDLE AND LOWER RPMs. Only cuts out when up and moving on plane. I’ve ordered a whole new impeller and housing and thermostat although I don’t believe they will make a difference as the thermostat wouldn’t impede water flowing through the tell-tail and the impeller housing was in great shape when I checked it just the other week.
FYI I don’t believe this motor is equipped with a poppet valve.
Anyone encounter a similar issue? Totally stumped here.