Hello, I have a 1991 searay 170 with a mercruiser 4.3. last weekend we took it out to get something to eat< it ran fine for the 1 hour trip there< but after letting it sit for 30 minutes we fired it back up and took off when we tried to do so the boat stumbled and shut off, so we tried again we managed to get going but only about 10 MPH at (WOT). the boat burnt less than 1/8 of fuel there, but on the way back it burned a half of tank, so when we got home we ordered a remanufactured 2 bbl carb, new cap and rotor and new plug wires, we tried it again today and it did the same thing but when you gradually increased the throttle it will rev but but when you punch the throttle the RPMs refuse to rise............???????????? PLEASE HELP??????????
