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I THINK I FOUND IT Went out today with cleaned carbs and fuel pump and fresh fuel and full tank. Just went to test if i put the carb and pump correctly back together. Jetski worked fine. I thought, lets put it on Reserve. After that, 5 seconds later it holds back, and died. Wouldnt start. Put it...

Thanks for the replies! Really appreciate it. I drained the fuel tank, just in case couldnt find any water, so thats good. I put the carb back in place. I think my next step is to swap out the CDI and checking the fuel lines. Hoping that would solve it. What do you guys think about the...

ThanksVumad, i just taken apart the pump and all the gaskets stayd in 1 piece. Also the filter looks very clean! :( BTW, what do you think about hydrolock? Water in the intake or fuel? I drained the fuel tank but cant get the last drips out of there. There is almost no water buildup in the ski...

Ah yes i didnt oped up the fuel pump yet because i do not have a rebuild kit yet. Im sorry for all the seperate replies from me. I will try to clean it up

Even better, it runs like a dream. Idles great, has the power it should have etc etc. No hesitation while accelerating etc.

Thats i exactly what i thougt first when i heard the word seizure. The first time it happened i thought, HOLY poop THE ENGINE SEIZED, and then i thought, lets check if the engine is seized by trying to crank it, and it turned over. But then after doing some research people where saying that it...

Yes offcourse,i understand. What i meant is that after i changed it to Reserve, a minute or 5 later is stopped, This happened 3/5 times. The other times the tank was way over 1/2 full. I never change from on to reserve while riding hard. Always at low rpm indeed. I agree, but i am too affraid...

Thanks for your extented reply btw! Didnt see it at first, i will try to reply to everything in a moment.

Okay, Those 2 measurements are new to me, but i indeed would like to learn them. I will order a couple of testers. But i have a question: I understand what the leakdown test does. But what does a popoff tester do? I measures the popoff pressure, but what exactly is "popoff pressure"?, and what...

Im rebuilding the carbs right now. Assembling then now. Look at the space between the needle and the thingy that lifts the needle up. Is that ok?

Didnt cleaned the carb myself, but im thinking of doing it myself again because it didnt get taken apart, just thrown into the ultrasound cleaner... Problem happened to me yesterday again: Before running i opened up the front high speed jet 1/4 more, because if was suspecting that this cilinder...

It doesnt really look like is related to the fuel level. Yesterday it happened (i think by coincedence) at the moment i changed from on to reserve. But i will check the check valve for sure. The previous time it happened the tank was only 1/2 empty.. The problem doesnt looks to appear when the...

Hello, Yamaha superjet 2015 Completely stock oil is 40:1 High octane low Ethanol fuel (euro98 here in the netherlands) i encountered this problem for 4 or 5 times by now. Let me explain it: Jetski runs great overall, no problem if i run it hard, it has full power and runs like it should At...

You mean just bent the tip a little inwards? How do i do this and is there risk that the tips break during jetskiing once i bent them?

Hello, i am changjng the plugs on my Yamaha gp1300r, and i still have 3 BR8ES laying around. Fsctory manual says they need BR8ES-11. Can i use the BR8ES instead of the BR8ES-11? Or will it hurt the motor? Whats the difference anyway?

Battery is new, twice. Ruined 2 batteries already. Nope, no electric bilge pump etc. The new voltage rectifier is OEM (second hand, but OEM), already tried two regulators. But if the starter relay i bad, the battery should still be charged right? I also measured the AC voltage of the coil...

Hello, I keep having problems with the charging system of my battery in my stock 2004 superjet. First of all, my battery is not charging. The voltage on the battery stays 12V, also when i apply throttle. BUT: As long as the battery is charged, the superjet will start just fine. But at some...

But where is the rivet coming from? The only rivets i can find is for the choke knob. And they dont look alike.

Hello, I found this on the bottom of my 2017 superjet. Does anyone know what it is and where its coming from? Or is it an unrelated piece? Looks like a hose fitting, but it closed at the end (but hollow inside) Its a stock 2017 superjet

How do i adjust the popoff pressure? By adjusting the screws?