I've learnt my lesson, I never run E10 (or any ethanol for that matter) in any of my bikes. Also, on the Keihin carbs there are two seals at every needle and seat, one is the needle tip and the other is around the seat which requires the seat to be removed to access them. It was the latter that caught me out and ive not had an issue in the decade since.

Leaving the fuel tap on didn't cause your problem. Only bad floats or float valves will allow fuel to pass into cylinders.

Great catch and good work on replacing the diluted oil. Because of the angle of the carbs in these bikes it's very important carb float needle, needle seats and seat o-rings are functioning properly in case the fuel pump lets gasoline through. I shut off the petcock while the bike is running and give it a few seconds then turn off the bike.

Hi mate, hope your getting things sorted. I’ve just watched this vid again and I’ve a couple of thoughts on this problem. Having just stripped my carbs down and replaced various jets, set float heights etc, I can think of a few thing they may have caused your issue. There are two things which seem obvious to me: 1. The float heights; they can potentially let fuel into the carb if they’re not set correct. 2. Float valves: there is a small rubber point that can degrade letting fuel into the carbs. Or, the mating surfaces are dirty, letting in fuel. You should be able to leave the fuel tap open regardless if those two things are correct. I can’t think of any other thing that would let fuel into the bores. Maybe you know something I don’t? Cheers

Awesome thanks had the same problem with my old gsx 1100 way back in 1980 bike stood for 3 months

One advantage that the early ZZ600 has over the the 1109 is the fuel tap is vacuum operated and will automatically shut when engine is switched off .

The problems are all sorted and it runs like a new bike. It was a real pain trying to find out what the problem was after the Hydrostatic lock was sorted. I will be posting a video that describes what the final issue was.

Sounds a bit over the top but every time I get back from a ride or have the engine running I always turn the fuel off with it still running and let the fuel completely drain from all the float bowls until the engine stops. Unless you are using the bike every single day in which case just turning off the fuel would be fine. Also a fuel stabiliser is a no brainer if you can only get E10 even E5. Fortunately here in England we can still get super unleaded from Esso which contains no ethanol so although a lot more expensive than standard fuel saves a lot of hassle with fuel systems that the ethanol bases fuels are determined to destroy. So if you can only get E10 over there if you can get a good fuel stabiliser and drain the carbs each time you get home that’s the way to go because switching the fuel off with fuel still in the system isn’t enough to stop the damage ethanol does. Looks like you might have blocked pilot jets also hence the poor running. Glad your back was wondering why you hadn’t posted. ZZR1100D1 & ZX10B1 Tomcat owner.

I brought my zx11 D1 brand new in Dec 1992 it is a 93. I still have it, i have never turned off the fuel. You should not have to do that. The problem.is our carbs have no over flow tubes, your problem is your needles failed to seal, when that happens the omly place for gas to go is into the motor.

Had a similar issue with my zzr1100 the pilot jets had a slight blockage in them and also the float height was wrong after I relaxed the valves reset height and cleaned jets ran ok after .might no be this but maybe something you might want to check

There are tutorials on here on how to take the ethanol out of the fuel. It looks really easy to do if you have the correct equipment, it doesn’t cost much.

What a ball ache! Hope it’s not one of those problems that are a bar steward to sort out.

My 1100 smells like fuel all around it, does not seem to have any leaks. But is this normal?

Hi .. sounds like your air pipe has come loose off the right side of air box..it’s a thick pipe not a thin one.. just guessing..

I reckon a video of that hydrostatic lock blow out situation as you described would've been excellent to witness.

Good video spoiled by the barking dog.

Always use Premium Fuel wherever you can get it. E10 is poison for bikes.

Hello sir,im listening to the videos and details about it,it seems dat ur in the phillipines i hope i can meet u in person or if ders a facebook or mesenger i can reach u i got a lot of thing i wana learn and i believ i can learn a lot from you..hope to hear from you sir..