Yamaha Superjet issue 2018

B

brendanappleby

Location
ct
my ski will run for a few min fine, but when i spin around in water and the front end dips in, it will start to bog real bad and the motor will be very jerky. It takes a while to work it out and it will be ok for 1/2 throttle, but if you hold it down wide open it bogs and stays at half speed not even. Any help would be greatly appreciated. been having a poopty summer with a brand new ski. don’t really want to wait 2 weeks for the dealer to look at it. already been to the dealer once to flush out the cooling lines.
 
W

Wave ninja

Location
Connecticut
brendanappleby said:
my ski will run for a few min fine, but when i spin around in water and the front end dips in, it will start to bog real bad and the motor will be very jerky. It takes a while to work it out and it will be ok for 1/2 throttle, but if you hold it down wide open it bogs and stays at half speed not even. Any help would be greatly appreciated. been having a poopty summer with a brand new ski. don’t really want to wait 2 weeks for the dealer to look at it. already been to the dealer once to flush out the cooling lines.
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Any motor mods or all oem?
Has the ski ever been sunk
Crimp new msd plug caps on?
Solved it on my 2016
 
long beach local

long beach local

long beach local
Location
Az
Why change the spark plug boots? oem is Very good they last a long long time are the new ones not the same as they used to be ?
 
long beach local

long beach local

long beach local
Location
Az
well that connection is not to good I guess, dont remember my 08 Sj giving me any problems but maybe I did replace them eventually . I use dielectric silicone grease on mine as it make removal easier as i have had the msd boots break too. It helps in salt water with high voltage and the rubber just likes it
 
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