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One side of Engine overhead

Sean R

Jet Boat Junkie
Messages
322
Reaction score
272
Points
147
Location
Acworth GA
Boat Make
Yamaha
Year
2020
Boat Model
212S
Boat Length
21
Glad its fixed, one thing I would like to say, sort of defending Yamaha and manufacturing as a whole. I work in manufacturing and covid part shortages make life a quality control nightmare. Installing parts out of station with a crew that doesn't normally do that work sucks for the employee, the company and of course the consumer. It kills work moral and pissing consumers like you and myself off. Glad its fixed and go get a sun burn on your sweet ass boat 👍
 

Bradp

Member
Messages
4
Reaction score
0
Points
10
Boat Make
Yamaha
Year
2020
Boat Model
242 Limited S E-Series
Boat Length
24
Has anyone got sand in there motor from beaching boat and how can I flush that?
 

WREKS

Jet Boat Addict
Messages
713
Reaction score
268
Points
117
Location
Port Saint Lucie, Florida
Boat Make
Yamaha
Year
2007
Boat Model
SX
Boat Length
23
@Bradp Is it overheating?
 

WREKS

Jet Boat Addict
Messages
713
Reaction score
268
Points
117
Location
Port Saint Lucie, Florida
Boat Make
Yamaha
Year
2007
Boat Model
SX
Boat Length
23
Both engines?
 

Bradp

Member
Messages
4
Reaction score
0
Points
10
Boat Make
Yamaha
Year
2020
Boat Model
242 Limited S E-Series
Boat Length
24
No just the starboard side
 

Bradp

Member
Messages
4
Reaction score
0
Points
10
Boat Make
Yamaha
Year
2020
Boat Model
242 Limited S E-Series
Boat Length
24
And it only overheats when I’m running the boat. If I idle it never overheats
 

WREKS

Jet Boat Addict
Messages
713
Reaction score
268
Points
117
Location
Port Saint Lucie, Florida
Boat Make
Yamaha
Year
2007
Boat Model
SX
Boat Length
23
@Bradp You think beaching it brought on the problem? Right? Is it still under warranty? Does the boat get used a lot or does it sit idle for a month or more? If it does, you could start by seeing what the thermostat looks like. Is it clean or is there some substance buildup that could potentially clog the water jackets. You could also run it on the hose and take some temps at the cylinders by the exhaust sides. Perhaps, you could see a hot spot to help isolate a problem in the water jackets around one or more cylinders.
 

RobbieO

Jet Boat Lover
Messages
411
Reaction score
248
Points
67
Location
SF Bay Area
Boat Make
Yamaha
Year
2021
Boat Model
212SE
Boat Length
21
@Scottma Fine sediment can bypass the filter and accumulate in the cylinder water jackets. If the filter is not clogged and you can run it without overheating, I suggest a long run at higher rpms. That way, perhaps, the cooling system can be flushed.
Where is the filter located?
 

WREKS

Jet Boat Addict
Messages
713
Reaction score
268
Points
117
Location
Port Saint Lucie, Florida
Boat Make
Yamaha
Year
2007
Boat Model
SX
Boat Length
23
@RobbieO It is located in the intake mounted on the Impeller Duct. More often it is called the Intake Screen. The service manual refers to as a "filter."
 
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