1992 Force 70 Abruptly dies

[scubadave1973]

I have a 1992 Force 70, bought back in march , not sure how long it sat, ran fine on ears in yard, took to the water and ran good at idol, went to come up on plane and suddenly died, got home, I put new fuel lines on it from tank to carb, pulled carb and cleand float bowl and jets, new gapless plugs, wires, coils and CDI box, and now, this is what it's doing ...

 

[racerone]

Running on 2 of 3 cylinders?

 

[scubadave1973]

It's backfireing through the carb, either reeds or compression ,