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Engine Problem

Tlaux

Jet Boat Addict
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Location
Lake of the Ozarks Missouri
Boat Make
Yamaha
Year
2012
Boat Model
X
Boat Length
21
Went to take off on the boat and could immediately tell something was not right with the engines. When I give it throttle the engines get really loud and the boat starts vibrating really bad. Boat won’t really go over idle speed. I know this isn’t the best description, but can anyone help. Thanks again.
 

ruztew

Jetboaters Lieutenant
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254
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Location
32408
Boat Make
Yamaha
Year
2015
Boat Model
SX
Boat Length
19
Cavitation, check pump for obstruction

Also check jet intake grate on bottom of boat, see if it's clogged up with grass or something
 

bumpy

Jetboaters Lieutenant
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Location
Ashburnham, MA 01430
Boat Make
Cobalt
Year
2020
Boat Model
Other
Boat Length
23
Both engines/pumps? Sounds a lot like stuff in the pump(s); have you looked in the clean out plug holes yet?
 

haknslash

Jetboaters Fleet Admiral
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Location
Lake Martin, AL
Boat Make
Moomba
Year
2019
Boat Model
Other
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23
Yup sounds like something is in your pump(s). All it takes is a plastic bottle cap or something very small to cause vibration and cavitation.
 

Tlaux

Jet Boat Addict
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Lake of the Ozarks Missouri
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Yamaha
Year
2012
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X
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21
You guys have done it again, put the boat on the lift and checked the jet intake grate on the bottom of the boat and sure enough something is lodged in there. Can’t really tell what it is, it’s a long hard like plastic piece. Kind of like the end of the screw driver almost, minus the metal. It’s lodged in there really good, no way I can get it out. Unfortunately with my mechanical skills looks like it’s going to the shop. Thanks for all the replies.
 

ruztew

Jetboaters Lieutenant
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Yamaha
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2015
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SX
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Try to get it out with pliers through the clean out plug ?
 

Tlaux

Jet Boat Addict
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Location
Lake of the Ozarks Missouri
Boat Make
Yamaha
Year
2012
Boat Model
X
Boat Length
21
EB754FE4-B3E1-4E72-9B93-8CF83B3AA061.jpeg I tried getting pliers on it, I can’t get it. I think it might be a chunk of wood from my picture. I can feel it through the cleanout ports and under the boat. I can’t get it to budge.
 

Tlaux

Jet Boat Addict
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Location
Lake of the Ozarks Missouri
Boat Make
Yamaha
Year
2012
Boat Model
X
Boat Length
21
E9CA18CE-E4C9-48AD-A5F6-2BFA2F92E472.jpeg This forum has saved me a bunch of money this weekend. Was able to pry the stick out with a screwdriver. Boat seemed to run fine afterwards, hopefully everything is good. Thanks for all the help.
 

Evildwarf

Jetboaters Lieutenant
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377
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Location
Woodstock GA
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Yamaha
Year
2014
Boat Model
Limited
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24
I carry a flat head screw driver and a short bladed (4") folding knife on a lanyard just for prying crap out of the impellers. The pumps ingest stuff frequently and on occasion a stick will get lodged and need to be pried out. Haven't had to pull a pump housing yet...
Welcome to jet boating!
 

NewBoater

Jetboaters Captain
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991
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Location
Virginia Beach
Boat Make
Yamaha
Year
2018
Boat Model
242X E-Series
Boat Length
24
Glad it’s fixed and I agree this is an awesome community who always answers questions quickly and always willing to help!
 

Lpennington

Jet Boat Addict
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Location
Raleigh, NC
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Yamaha
Year
2018
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AR
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19
Wow, I need to put a couple tools in the boat should this ever occur. Also reminds me that I need to take a good look under the boat so I know the landscape should I ever need to check things out. I just know where the cleanout port is ...
 
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