Viper engine cylinders full of fuel

[Polishmafiaboss]

So I’m working on rebuilding a ‘03 Viper. Engine was back together & in sled. Having other issues along with:

Came out the other morning to keep digging into the other issues and found fuel all over the floor, belly pan and leaking out of exhaust. Pulled carbs figuring float sticking is cause. Determined both 1&2 cylinders (pto & center) slap full of gas. Pulled reed cages out and there was fuel right up to the bottom of the reed housings!!

I have the vast majority of the gas outnof those 2 cylinders. (#3 is dry as far as I can tell.

My question: how much gas/oil mix can be in the bottom of the casing in those cylinders before you should NOT try to start it at all??

I’m assuming if there should be NONE I am going to need to pull the engine back out and try to get ALL of it out.

TIA for any suggestions / advice

 

[MURDER YAMAHA]

I would guess the orings on you needle and seat have failed. If they are that bad, i would replace all 3.

 

[sideshowBob]

I would guess the orings on you needle and seat have failed. If they are that bad, i would replace all 3.

X2
You may also have a fuel pump diaphragm issue combined with needle and seat issue.
Don't try to start it with all that fuel in the engine you could hydraulic lock a cylinder and do damage.
No need to pull the engine out a little fuel in the cases is not a real problem.
I would pull the carbs and repair the fuel flooding issue and then you can use a syphon hose to drain as much fuel as possible from the engine, crank it over numerous times with the plugs out to eliminate most of the remaining fuel.

 

[Polishmafiaboss]

I would guess the orings on you needle and seat have failed. If they are that bad, i would replace all 3.

I have already replaced all 3. I figured that was the cause of the flood.

I used a hand pump on both the filled cylinders and got 85-90% of the fuel out. I’ll spend some more time today drying those out before putting it back together.

Thanks for the replies