These valves work in sync They both go up and down at the same time. You I put new rings and a cylinder is not working for me, Is it the same engine of the two Pistons video? What do I do help me with your experiences!
@1086Israel
3 жыл бұрын
Are power valves supposed to move at the same time??
@joseacd01
Жыл бұрын
Yes
@lazmartinez1605
3 жыл бұрын
I have one that is not getting gas to the carburetor the line is not getting gas ether
@joncrisler6001
3 жыл бұрын
You probably need to remove the carbs and rebuild them. They can get gummed up. I believe the fuel pump is integrated with each barrel of the carbs, so on a 3 cylinder model you have 3 carbs, 3 fuel pump diaphragm. On a 2 cylinder, you will have 2 carb barrels, 2 pump diaphragms. If the cylinder is getting oil, then its not doing any major damage. But if that cylinder is oil starved then you have bigger problems. Also run a compression test on each cylinder. Search for Greenhulk for lots of online help and resources.
@SamCyanide
4 жыл бұрын
Mine just cycles forever when the engine is off. Not just once for a test, it keeps doing it untl the battery dies
@andreufuenteamat1028
3 жыл бұрын
I have this issue too, have you solved it?
@SamCyanide
3 жыл бұрын
@@andreufuenteamat1028 yeah, I think I replaced the servo and ended up putting the old one back and for some reason it works fine now. Maybe the cable was out of adjustment
@andreufuenteamat1028
3 жыл бұрын
@@SamCyanide okay thank you, i'll check it and try to fix it
@elx622
5 жыл бұрын
My man I'm having a problen with my gp1200r . I just rebuilt the carbs and the ski runs strong and healthy but when the engine hits high rpms it powers down back to low rpms like if the ski would go into safe mode . It doesn't bug or misfire it just goes back to low rpms ... Any idea what the problem might be ?
@joncrisler6001
4 жыл бұрын
DId you verify that the power valves are functioning properly? Run it on the garden hose and see if they all open properly. I wonder if perhaps this is a cavitation problem on the impeller, rather than an engine problem. Does it eventually reach proper RPM and top speed ? If yes then I would look at the jet pump, if no perhaps an engine issue. A compression test is always good to have. Also post your question on the Greenhulk PWC forums.
@elx622
4 жыл бұрын
@@joncrisler6001 as soon as it hits high rpms it shuts down it won't let it stay at high rpms..
@joncrisler6001
4 жыл бұрын
@@elx622 Do you get any alarms beeping ? If that is the case, it does sound like a "limp mode". Go on Facebook and join the group " GreenHulk.Net PWC Performance " for more advice, also "YAMAHA WaveRunners OWNERS" .
@wwellgrid
5 жыл бұрын
Hey John, I could use your advice on my power valve connections. Can u take questions by email?
@joncrisler6001
5 жыл бұрын
Yes, I can, but I need to figure out how to get you my email address privately. Also look on Facebook for a group called GreenHulk , also they have a decent website at greenhulk.net/forums/forumdisplay.php?f=28&s=cd06ea9593be39482dedbc116a24f621
@SteveRusso
5 жыл бұрын
My #3 cylinder power valve is operating fine, the next 2 don't spin at all. What usually is the cause of this ?
@joncrisler6001
5 жыл бұрын
Watch the video again: that is the point of this test. If the cylinder with the input cables works fine, but the other two do not, then the plastic splined linkage is worn or broken. The power valves themselves might be stuck, in which case you have to pull the tops off the power valves, clean out the gunk to free them up, replace the plastic couplings. The power valves themselves are a bit fragile so be careful. If you search for a parts diagram of a XLT1200 or GPR1200 it becomes more obvious . Look here for part # 17 - www.babbittsonline.com/oemparts/a/yam/5003a4c7f870021f60a13103/cylinder-crankcase-2
@joncrisler6001
5 жыл бұрын
Also part #7 is the power valve, but since its a top view it can be misleading. Here is a better view of power valves- www.shopsbt.com/jet-skis/seadoo-yamaha-jetski-powervalve-ravevalve-parts.html
@joncrisler6001
5 жыл бұрын
Keep in mind that power valves on a 2 stroke engine are not the same as valves on a 4 stroke gasoline engine like your car. The concept very different. A good resource is Greenhulk forums.
@joncrisler6001
5 жыл бұрын
Just to be clear- in the parts diagram link above- part 17 is the plastic coupler, 18 is the rubber cover that you can easily pull to the side. Part #7 is the actual power valve. NOW- sometimes the power valve itself can get gunked up by the burned 2 stroke oil, and cause it to freeze in place, which might break the plastic coupler. In that case you have to pull the power valve cover off (part #3), loosen and remove the power valve and scrape out the sludge in order to free up the valve.
@joncrisler6001
5 жыл бұрын
Here is a good video that explains power valves a bit more- its not a Yamaha but the concept is the same- kzitem.info/news/bejne/lX18142EbmlqgKQ
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