I have a tapping / clacking noise at idle coming from my port engine on my 2014 327SSX Chaparral. The mechanic at my marina looked at it but couldn’t diagnose anything - they want to start taking things apart to “get a better listen” but I am leaning towards getting a second opinion before letting these guys go any further. Here are the symptoms:
- tapping / clacking noise that seems to be isolated to the rear port side. The mechanic tried pinpointing the source and so have I with a stethoscope but no luck.
- very consistent rhythm
- does not occur at cold. Only after the engine is warm does the sounds start
- the noise is there at idle ~600 RPM. the sound goes away when throttle is increased above ~800 RPM.
- marina mechanic ran a code scan and found no issues; said the run history looks good. No over heats, no high rpm abuse.
- no performance problems. Runs smooth at both low and high speed.
- first noticed this noise when I was in the engine compartment doing an oil change last fall when I put the boat away. I put in 25-40 synthetic blend Merc oil.
- the engine is 2014 with ~120 hours
- Merc 350 with catalyst
I am hoping the fact that it doesn’t make noise until the engine warms up and goes away when above ~700 RPM will help narrow this down for someone with right experience and skill to help point me in the right direction.
- tapping / clacking noise that seems to be isolated to the rear port side. The mechanic tried pinpointing the source and so have I with a stethoscope but no luck.
- very consistent rhythm
- does not occur at cold. Only after the engine is warm does the sounds start
- the noise is there at idle ~600 RPM. the sound goes away when throttle is increased above ~800 RPM.
- marina mechanic ran a code scan and found no issues; said the run history looks good. No over heats, no high rpm abuse.
- no performance problems. Runs smooth at both low and high speed.
- first noticed this noise when I was in the engine compartment doing an oil change last fall when I put the boat away. I put in 25-40 synthetic blend Merc oil.
- the engine is 2014 with ~120 hours
- Merc 350 with catalyst
I am hoping the fact that it doesn’t make noise until the engine warms up and goes away when above ~700 RPM will help narrow this down for someone with right experience and skill to help point me in the right direction.