Zone 3 speaker loud crackling noise and engine losing fuel prime

[Michael & Felicity]

Hi there. My 2023 cb31 has had an audible hum from all zone 3 speakers for a long time. However for a while now those speakers have changed to a loud crackling noise no matter the voulme or audio source, even when volume is set to zero on all channels. After researching this it seems to me that there is a separate amplifier for zone 3. I’m guessing it’s located behind the carpeted panel against the starboard hull below the helm. I cannot see how to remove this. How can I gain access behind this panel or Is there a way to cut power to zone 3 (pulling the fuse didn’t do it) until I can have this fixed.

Also, I noticed a recent unanswered post about the Volvo d4 320 losing its Prime. I couldn’t respond to that post but wanted to say that my engine has the same problem. Starting a couple of months ago I need to push the prime button 6-10 times and then the engine starts and runs okay. Otherwise it runs for a few seconds dies and will not restart. Still trying to figure out what’s going on.

Thanks. Mike and Felicity.

 

[Jared Dunning]

Hello Mike,

There is a filter item that can help solve that issue (I'll find the part info). It is a simple plug and play method. The amp is in the V-berth behind the panel just pulls out, might be a little tough. As for the loosing prime its typically the second fuel filter losing prime and the whole fuel filter housing needs to be replaced.

 

[Michael & Felicity]

Thanks Jared.
We’re out cruising. And I’ll check further when we’re back home. The panel seems looseish but I couldn’t seem to pull it out so I’ll try again.

Mike

 

[Jared Dunning]

Check for hidden screws. There might be a few.

 

[Michael & Felicity]

OK thanks for the heads up!
Mike