Please Help. Odd sound on a 40 hr Suzuki 115( Videos attached )

[Karnic]

Please Guys

Own this new Suzuki and after starting the motor in my garage ( Tank ) i noticed this weird odd sound . Sound appears after putting the motor to normal idle after revving it up a bit. Is it Normal on a new 4 stroke Suzuki DF 115 ATL?
Sorry about the quality of the audio but on the 1st video odd sound is clear from minute 0:12 while on the 2 nd video the sound could be clearly heard from minute 1:00 onwards. Appreciate your help.

 

[Karnic]

Forgot to write that after a while on idling motor returns to normal ' sound '

 

[Spi D]

Hard to say from the video.

If the 115 has multi-stage intake (like it's bigger siblings) it might just be noise from air swirling whilst the valve adjusts to a setting.

A good run under varying load may solve it. Engines like to work

 

[Phildorset]

i think most engines sound less than perfect when run like this, ie; enclosed spaces and covers off. Plenty of times i've convinced myself that one of my bike engines is about expire because I'm hearing every last mechanical rattle whilst in the garage... and they run and sound sweet as can be once out again.

 

[JerseyDiver]

Is your 2nd video showing a fault code 3-6 ??

Possibly a failed sensor leading to a slightly inefficient running causing the noise?

 

[AllanG]

Sounds like the alternator belt noise, which sounds pretty normal to me (based on my Honda BF135 outboard), but it may be worth checking the belt tension is correct.

 

[Spi D]

Is your 2nd video showing a fault code 3-6 ??

Possibly a failed sensor leading to a slightly inefficient running causing the noise?

I did notice that. 3-6 is an O2 sensor error that will activate failsafe mode (limp) but I don't recon the sound (and it's disappearance) is a result. Happy to be corrected , though.

If still under warranty I'd give the dealer a ring. O2 error message causes are many, sometimes from other parts of the engine only detected by the O2 sensor.

 

[Karnic]

i think most engines sound less than perfect when run like this, ie; enclosed spaces and covers off. Plenty of times i've convinced myself that one of my bike engines is about expire because I'm hearing every last mechanical rattle whilst in the garage... and they run and sound sweet as can be once out again.

Is your 2nd video showing a fault code 3-6 ??

Possibly a failed sensor leading to a slightly inefficient running causing the noise?

yes it is a fault sensor code. going to replace the o2 sesor in a couple of days.

 

[Karnic]

Sounds like the alternator belt noise, which sounds pretty normal to me (based on my Honda BF135 outboard), but it may be worth checking the belt tension is correct.

I did notice that. 3-6 is an O2 sensor error that will activate failsafe mode (limp) but I don't recon the sound (and it's disappearance) is a result. Happy to be corrected , though.

If still under warranty I'd give the dealer a ring. O2 error message causes are many, sometimes from other parts of the engine only detected by the O2 sensor.

yes dealer is going to change the O2 sensor next week. bit worried about that odd weird sound as soon as i put motor in normal rps after revving the motor. after outboard settles ( idling on normal rpms ) that odd sound decreases and then stops and sounds fine. My wife told me im getting paranoia hahah

 

[spannerman]

I did notice that. 3-6 is an O2 sensor error that will activate failsafe mode (limp) but I don't recon the sound (and it's disappearance) is a result. Happy to be corrected , though.

If still under warranty I'd give the dealer a ring. O2 error message causes are many, sometimes from other parts of the engine only detected by the O2 sensor.

If you mean the whirring noise then it sounds like a pulley or the tensioner on the alternator belt. You can remove the belt and spin the pulleys by hand to check for a bad bearing, and you can run the engine without the belt to see if the noise disappears. It could be a a bearing that after running a few seconds quietens down.

 

[Karnic]

Please Guys

Own this new Suzuki and after starting the motor in my garage ( Tank ) i noticed this weird odd sound . Sound appears after putting the motor to normal idle after revving it up a bit. Is it Normal on a new 4 stroke Suzuki DF 115 ATL?
Sorry about the quality of the audio but on the 1st video odd sound is clear from minute 0:12 while on the 2 nd video the sound could be clearly heard from minute 1:00 onwards. Appreciate your help.

Forgot to write that after a while on idling motor returns to normal ' sound '

Hard to say from the video.

If the 115 has multi-stage intake (like it's bigger siblings) it might just be noise from air swirling whilst the valve adjusts to a setting.

A good run under varying load may solve it. Engines like to work

Is your 2nd video showing a fault code 3-6 ??

Possibly a failed sensor leading to a slightly inefficient running causing the noise?

If you mean the whirring noise then it sounds like a pulley or the tensioner on the alternator belt. You can remove the belt and spin the pulleys by hand to check for a bad bearing, and you can run the engine without the belt to see if the noise disappears. It could be a a bearing that after running a few seconds quietens down.

Yes after few minutes noise quiet down and seems to return to normal sound at idle. issue arise after revving a bit and then back to normal idle. Yes the strange sound is a whirring sound. Did you catch it on my videos? hope im explaining myself good. Im not mechanically inclined and all i want is to put my mind at rest cause wife is telling me im suffering from paranoia