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Anyone with YDS..need a favor

R

rkgdmd

Jet Boat Addict
Messages
220
Reaction score
101
Points
122
Location
Live in NY, Boat in Florida Keys
Boat Make
Yamaha
Year
2015
Boat Model
Limited S
Boat Length
24
In trying to find out why my engines won't go past 7000 RPM'S, the dealer sent a tech to my boat and hooked up his computer. He said the only thing he noticed was that the throttle bodies only open to 80%. The dealership has been running me in circles and doesn't know if this is normal or not. Could somebody with the YDS and a later model (2013-2015) boat hook up their diagnostics and let me know what their getting? Thanks.
 
Your dealer has access to the corporate engineers who can tell them anything they desire! I'm sure someone will post your RPM range shortly.

How many hours are on your boat?
 
rkgdmd said:
In trying to find out why my engines won't go past 7000 RPM'S, the dealer sent a tech to my boat and hooked up his computer. He said the only thing he noticed was that the throttle bodies only open to 80%. The dealership has been running me in circles and doesn't know if this is normal or not. Could somebody with the YDS and a later model (2013-2015) boat hook up their diagnostics and let me know what their getting? Thanks.
Click to expand...
80% open means you're getting 80% air fuel mix means you're getting 80% speed. I believe your top RPM in your boat is 8000 RPM so 7000 / 8000 = 87.5% I think that's where the problem lies. Hope someone with YDS will chime in to confirm this for you but your maintenance folks should know or at least be able to call Yamaha to find out. This may also be a simple linkage adjustment that you can do yourself.
 
Murf'n'surf said:
Your dealer has access to the corporate engineers who can tell them anything they desire! I'm sure someone will post your RPM range shortly.

How many hours are on your boat?
Click to expand...

I totally agree murf'n'surf. It's been almost two weeks and every time I call they say they can't get to the engineers??? I have about 34 hours on the boat.


Gym said:
80% open means you're getting 80% air fuel mix means you're getting 80% speed. I believe your top RPM in your boat is 8000 RPM so 7000 / 8000 = 87.5% I think that's where the problem lies. Hope someone with YDS will chime in to confirm this for you but your maintenance folks should know or at least be able to call Yamaha to find out. This may also be a simple linkage adjustment that you can do yourself.
Click to expand...

I did the linkage adjustment myself as this is not my first Yamaha boat. You have no idea what it's like to deal with this dealership. There is nobody that knows anything about these boats....and this is one of South Florida's largest jet boat dealers. It's very frustrating.
 
Last edited:
maybe being a engine/ecu issue you could take it to a jet ski dealer if you knew one that would give better service?
 
I know your not dealing with Riva....maybe you need to switch.
 
rkgdmd said:
Yes, yes, I know Murf....but who else do I have down here in the Keys? Now I'm embarrassed....my dirty secret is out. I bought from Riva.
Click to expand...
I love Riva but only deal with the Pompano store....never had anything less than excellent service.

I would have a talk with the service manager and get to the bottom of it.
 
Key Largo store is an entirely different story my friend. Troy is the service writer. Nicest guy in the world. Want to go have some beers with him....but he does not know a damn thing about boats. Background in motorcycles apparently. They are very busy and it affects the way they deal with you post sale. I am stuck with them. That is why I'm trying to do a little investigating of my own. The GM actually told me it was normal for the boat to be slow before the 10 hour service. Said they just need to reset the ecm. I told him I didn't see that in the maintenance schedule. Also told me maybe Yamaha was limiting the top end of some boats because they were too fast or wearing out too quickly. Swear to God that's what he said. Lol.
 
Last edited:
Geez. Hate to hear that. Yeah, sounds like you need a change of venue.

Back to your OP, I have the YDS, but not that year boat. If someone could lend me a 2015 242, I would be happy to hook it up... It would only take me a couple of weeks to make sure I got a good reading. ;)
 
OK....I promise to be your best friend forever. :joyful: Can someone please let me know how many degrees their throttle bodies are opening at WOT. Don't make me beg. Lol.
 
rkgdmd said:
OK....I promise to be your best friend forever. :joyful: Can someone please let me know how many degrees their throttle bodies are opening at WOT. Don't make me beg. Lol.
Click to expand...
I don't have the same boat or engines in mine. But I'll check if you think it will help you. It will take me a few days to get to it, but let me know if you're still interested.
 
itsdgm said:
I don't have the same boat or engines in mine. But I'll check if you think it will help you. It will take me a few days to get to it, but let me know if you're still interested.
Click to expand...

Thanks! Beggars can't be choosers. Actually, I think it might be helpful to have some info from different boats just for comparison.
 
Yes, that has been my reason for lack of reply. I don't have a '15... The pattern is full for this weekend, but maybe I can get up there tomorrow and see if I can take some readings. Never actually started an engine with the YDS on it yet... This should be fun.
 
@OperationROL

With YDS and at least a few '15s at Shelbyville, do you think we could get this answer for him?
 
tdonoughue said:
Yes, that has been my reason for lack of reply. I don't have a '15... The pattern is full for this weekend, but maybe I can get up there tomorrow and see if I can take some readings. Never actually started an engine with the YDS on it yet... This should be fun.
Click to expand...

Thanks @tdonoughue. Much appreciated.
 
We will be in Shelbyville in 9 days and with any luck and a windows xp laptop, I will hook mine up. However, you can get most of the YDS info by holding down the system/control button for 3 seconds.

Check the model number of your boat. You may have a California low emission version .
 
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