• Welcome to Jetboaters.net!

    We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!

    Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)

    free hit counter
  • Guest, we are pleased to announce that Hydrophase Ridesteady is offering an extra $100 off for JETBOATERS.NET members on any Ridesteady for Yamaha Speed Control system purchased through March 7th, 2025. Ridesteady is a speed control system (“cruise control”) that uses GPS satellites or engine RPM to keep your boat at the set speed you choose. On twin engine boats, it will also automatically synchronize your engines.

    Click Here for more information>Ride Steady group buy for JetBoaters.net members only

    You can dismiss this Notice by clicking the "X" in the upper right>>>>>

This was forwarded to me , anyone ever hear of this?

Cobra Jet Steering LLC

Jetboaters Admiral
Vendor
Messages
6,023
Reaction score
5,463
Points
462
Location
Florida
Boat Make
Yamaha
Year
2021
Boat Model
Other
Boat Length
Other
This was someone on the other planet saying that his 08 212x was dropping rpm due to his oil being low, I know it happens when the oil is overfilled but I don't recall hearing this for low oil other than limp mode .
This was not limp mode, just loss of top end speed and r p m. Wondering if anyone else has heard of this.

"Some weeks ago I was having RPM issues between both motors, changed out the plugs and the boat ran just fine....then the issue popped up again a couple weekends ago so I thought I best have it checked. Brought it to my local marine service center and they find the boat is low on oil, for whatever reason...speed forward and they have $210.00 into running checks on it, adding oil and then water testing it. Boat runs great so seems the low oil was / is the problem...lesson learned on checking the oil level more often....I don't mind spending some money on something if I learn more about it."
 
That's a first for me, too, Jeff. I seem to remember that one time a didn't add back quite enough oil after a change and didn't catch it right away. I never had a loss of speed as a result though. :confused:
 
That's a new one! Riva always told me to take the oil down to 1/4 or 1/2 way in sea-doo dip stick hash area to increase rpm especially in a stage 2 or 3 kit.
 
I always run my oil half way between the marks however it never said how low it was. I check mine on the water regularly and change it every 50 hours. I also know not to put in more than I took out so I measure it carefully when removing it. I just wondered about it.
 
Piston rings going bad? Cylinder walls worn? Spark plugs loose? Bearings going bad without proper oil?
both engines?
I fear a catastrophic failure could be imminent.
 
Btw, I hate the dummy lights.
oil pressure, battery voltage, engine temp...
give me gauges
 
That is a new one for me too.....will be filed under ... Hmmmmm....
 
Understood , but just adding oil if internal parts were damaged would not correct the problem. For those of you who remember " johnny o" from planet yjb, he had an issue with his oil filter leaking, he called me and said he found his issue and fixed it. The next day he threw a rod through the side of the block on the bad engine.
 
That reminds me, I have said this many times in the past but for the new people take heed, oil filters develop leaks at the crimp by the base over time especially in salt water use.
The crimp is the seam where it is folded over the base of the filter, I have seen this numerous times especially with boats that do not get oil changes very often due to low usage.
Once the filter leaks out oil you may not notice it until it is too late.
You probably won't even know about it prior to it going into limp mode. Then once in limp mode you certainly will destroy the engine if you continue to run it.
I always cover my filters with aluminum duct tape the metal peel and stick type , what we call poor mans chrome.
That protects the metal of the filter from the elements and from any water in the bilge causing corrosion and failure of the filter. I change my filters 3 or 4 times a year but I still add that tape just to be safe.
 
Normally if any engine starts running poorly due to low oil there is normally a sicking loud pinging sound coming from the motor that continues to get louder and ends in a POP or BOOM followed by the sounds of hot gases and compression escaping. Can most commonly be accompanied with a OH $HIT ot FU#K!
that's how u have always been able to tell!
 
I DID NOT KNOW THAT !!! HAAAAA
 
Back
Top