2014 VX Deluxe Engine Temp Issue - Yamaha Forums
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post #1 of 3 Old 09-14-2020, 11:40 AM Thread Starter
 
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2014 VX Deluxe Engine Temp Issue

I have a 2014 VX Deluxe that has an issue that the dealer can't figure out. I can run all day at half to three quarter throttle without issue. The problem arises when I run at full throttle for a few minutes & then slow down to a couple of mph and/or idle speed...at that point the warning light & siren come on & the thermometer pops up at the bottom of the screen. No error codes come on the screen. If I try to continue to run it, it goes into a limp mode speed. If I shut it down for three to five minutes, I can start and go on my way without problems until I run it at at full throttle for a few minutes & then slow down like I explained before. The dealer did a computer diagnostics on it & no error codes show. Ideas, anyone?
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post #2 of 3 Old 09-14-2020, 02:48 PM
 
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Quote:
Originally Posted by bobmcarthur View Post
I have a 2014 VX Deluxe that has an issue that the dealer can't figure out. I can run all day at half to three quarter throttle without issue. The problem arises when I run at full throttle for a few minutes & then slow down to a couple of mph and/or idle speed...at that point the warning light & siren come on & the thermometer pops up at the bottom of the screen. No error codes come on the screen. If I try to continue to run it, it goes into a limp mode speed. If I shut it down for three to five minutes, I can start and go on my way without problems until I run it at at full throttle for a few minutes & then slow down like I explained before. The dealer did a computer diagnostics on it & no error codes show. Ideas, anyone?
I would check the water inlet and impeller. You can't fix this problem by "looking at codes"
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post #3 of 3 Old 09-16-2020, 06:09 PM
 
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It's very simple, you have a restriction in your cooling system, I would also check your thermostat to see it opens fully as it may just open sufficent to cool when cruising or lower revs but when you rev harder the engine produces a lot more heat and requires more water to flow through.
I would pull my hoses off one by one and find the one with a small stone or sea shell in it.
Also check the inlet as it has a filter that could be partially blocked.
The Pump pushes water through the Ski, do you check the Pissers whilst riding to see that water is coming out fast ?
It's not like a car that has a closed water system and the only four things can be a blocked radiator a dying Thermostat the impeller on the water pump and not enough water in the system.
If you take the thermostat out and place the housing back on you could then back flush the system.
Do you do a lot of coming oonto the Beach whilst the engine is still running so that it sucks up sand.
Sand can build up in your cooling system around the cylinders, I have seen water jackets almost sealed because of that bad habit.
I see people with $26,000 Skis just flying straight up onto the sand before shutting down the engine.
The main thing is that it is a lack of water cooling your engine pure and simple and there aren't that many hoses and like I said check the water jacket by taking the exhaust manifold off and see if you can see any build up if everything else checks out ok.
I would have thought the Dealer would have had more intelligence on checking the water flow through the Ski as they normally have a tank they can test the Ski in.
They also have a water pressure gauge to check the water flow and temp at the pissers.
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