I have tried numerous things. I have did plugs and wires. Drained all gas and out new gas in. The oil injector was taken out and I mix 50:1 I can get the boat running by heating the plugs and squirting some gas in each cylinder and it will usually start back a couple times before it fouls out the plugs again. I’m using champion l77jc4 plugs. It’s a 175 Johnson on an 88 bullet.