Bravo 3 loud knocking/ticking Sound Video

[msd58]

Last run of the season. Came off plane and heard this sound coming from under swim platform. Makes sound in forward, neutral and reverse. Any ideas?

New video · Sunday, Oct 30, 2022 🎬

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[tpenfield]

My ideas are U-joints or exhaust flapper. Is the noise present in the engine bay as well?

 

[msd58]

My ideas are U-joints or exhaust flapper. Is the noise present in the engine bay as well?

Flappers, ujoints and entire transom assembly new 2020. Inside engine bay it's not making that sound. Pronounced sound coming from under swim platform

 

[Lou C]

I’d pick up a mechanic’s stethoscope pull the boat out of the water and keep probing areas till you find where it’s coming from…

 

[QBhoy]

Does it do it when in gear at idle ?

 

[Scott06]

Does it do it when in gear at idle ?

Post 1 said does it in fwd neutral and rev.

 

[QBhoy]

Post 1 said does it in fwd neutral and rev.

I really should have paid more attention!

 

[msd58]

Does it do it when in gear at idle ?

Yes

 

[alldodge]

Check the props to see if they are loose, otherwise need to pull the drive. Hope not, but could be the 2020 job was not so good

 

[msd58]

Check the props to see if they are loose, otherwise need to pull the drive. Hope not, but could be the 2020 job was not so good

What part of the 2020 job?

 

[alldodge]

What part of the 2020 job?

I read

Flappers, ujoints and entire transom assembly new 2020. Inside engine bay it's not making that sound. Pronounced sound coming from under swim platform

Inside not making noise, but outside is
Maybe something was not done but listed it was.
I would look at outdrive since no sound inside boat, but could be gimbal bearing

 

[QBhoy]

What kind of boat is this ? Don’t suppose it’s a formula with the silent thunder system. With baffles and water box in the back of it ?

 

[msd58]

What kind of boat is this ? Don’t suppose it’s a formula with the silent thunder system. With baffles and water box in the back of it ?

No Its single engine 28' express cruiser

 

[msd58]

I read

Inside not making noise, but outside is
Maybe something was not done but listed it was.
I would look at outdrive since no sound inside boat, but could be gimbal bearing

Everything was done as listed....gimbal bearing is new as its part of the transom assy package when you buy it....to my knowledge gimbal bearings roar when they are going bad.

 

[msd58]

Here's the problem. Pic of gear set removed from upper

 

[Scott Danforth]

Ouch

 

[tpenfield]

Here's the problem. Pic of gear set removed from upper

Looks broken . . .

 

[Sunburn71]

Just had that happen to mine this past summer. Please check for the magnet on your drain plug. The upper one came out of mine and went through the gears and wrecked the whole drive. I am in the process of overhauling mine because of that. I should have said upper plug, not lower.