Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Uneven Underwater Exhaust
#1
The boat is a ‘99 4000 Express with 3208’s. 

My port and starboard underwater exhausts are uneven at idle with the starboard side being far more “animated” than port. The port side is more a gentle bubble, almost entirely contained under the swim platform while the starboard side does a lot more “sloshing.” It almost appears like the starboard side is in gear at the dock. 

Both motors are at a steady 600-650 idle, and all pressures and temps are where they should be throughout the full rpm range. They otherwise run great, but am not even sure which side is the correct side at this point. 

I took short 10sec videos of each side, but the site won’t let me upload them. If you think you have an idea, I’d be happy to text or email them to you!
Like Post Reply

  


Messages In This Thread
Uneven Underwater Exhaust - by MC1600 - 10-20-2020, 05:04 PM
RE: Uneven Underwater Exhaust - by trit21 - 10-20-2020, 06:20 PM
RE: Uneven Underwater Exhaust - by Maxwell - 10-20-2020, 06:53 PM
RE: Uneven Underwater Exhaust - by MC1600 - 10-20-2020, 07:23 PM
RE: Uneven Underwater Exhaust - by jlobon - 10-21-2020, 03:37 PM
RE: Uneven Underwater Exhaust - by MC1600 - 10-22-2020, 01:00 PM
RE: Uneven Underwater Exhaust - by Sans Peur - 10-23-2020, 09:50 AM
RE: Uneven Underwater Exhaust - by zajecm - 05-05-2023, 09:16 AM
RE: Uneven Underwater Exhaust - by MC1600 - 05-05-2023, 02:11 PM
RE: Uneven Underwater Exhaust - by Dakota773 - 05-05-2023, 02:56 PM

Possibly Related Threads...
Thread Author Replies Views Last Post
  BAD GENERATOR EXHAUST HOSE ALREADY ??? jcarrollgm 3 5,843 12-23-2022, 04:33 PM
Last Post: Trainman
  Exhaust question mggilmorern@gmail.com 0 1,247 11-23-2021, 07:41 AM
Last Post: mggilmorern@gmail.com
  Exhaust smell in cabin of 95 4000 Express dlhst50 2 3,221 09-22-2020, 06:41 PM
Last Post: dlhst50
  Exhaust Riser Replacement on 1996 40 Express with Cummins 6CTA engines janste2018 7 7,821 01-27-2020, 07:39 PM
Last Post: Sans Peur



Users browsing this thread:
2 Guest(s)

Uneven Underwater Exhaust00