2014 4.3 Mercruiser Pop & Bog after 30 minutes @ 28 mph. Help!!!

[coolbucket]

Rebuilt carb, ran 35 great minutes...popped, bog, ran external tank, drained tank, filled with non ethanol, ran great 35 minutes, pop, bog. replaced TKS with electric choke carb, new plugs. Runs great for 30 minutes then go to idle, then accelerate, she pops, bogs and wants to die. I can get it to go into gear and idle back to boat dock. 2014 Hurricane 187 io. I'm putting in new Cap and rotors this week. Boat has less than 100 hours. Only thing left to replace is fuel pump, Coil and plug wires right? Any help here????

 

[Scott Danforth]

What is your fuel pressure?

Start trouble shooting and stop throwing money at it in hopes to fix it

From your description, I say plugged fuel vent or plugged anti-siphon or bad gas.

 

[Bondo]

Rebuilt carb, ran 35 great minutes...popped, bog, ran external tank, drained tank, filled with non ethanol, ran great 35 minutes, pop, bog. replaced TKS with electric choke carb, new plugs. Runs great for 30 minutes then go to idle, then accelerate, she pops, bogs and wants to die. I can get it to go into gear and idle back to boat dock. 2014 Hurricane 187 io. I'm putting in new Cap and rotors this week. Boat has less than 100 hours. Only thing left to replace is fuel pump, Coil and plug wires right? Any help here????

Ayuh,..... What motor,..??
Which drive,..??

 

[coolbucket]

4.3

 

[coolbucket]

What is your fuel pressure?

Start trouble shooting and stop throwing money at it in hopes to fix it

From your description, I say plugged fuel vent or plugged anti-siphon or bad gas.

We already ran external gas tank in it ran fine we emptied the gas tank and filled it back up with non-ethanol already. Still have a problem.

 

[Scott Danforth]

We already ran external gas tank in it ran fine we emptied the gas tank and filled it back up with non-ethanol already. Still have a problem.

What is your fuel pressure?

 

[alldodge]

We already ran external gas tank in it ran fine we emptied the gas tank and filled it back up with non-ethanol already. Still have a problem.

Does it run fine longer then 30 minutes?

If it does and when running on the tank and only get 30 minutes, check the fuel tank vent