2011 VX Deluxe Idle Vibration

[sethman83]

Hi, Everyone!

I've got a 2011 VX1100 Deluxe that I bought last summer. It now has 100 hours on it. There is a decent engine vibration at idle that quickly smooths out at 2500-3000 RPM and it has no problem getting to full 8000 RPM on the water. The spark plugs are brand new and I just checked the compression cold and got between 190 and 200 psi on all cylinders. The cylinder drop test showed significant change on all 4 cylinders so I'm sure the spark is fine on each of them. I've used StaBil Marine and Ring Free in the fuel since I've had it.

Is this vibration normal at idle or should I dig into the injectors and see if they need some cleaning?

Thanks for any insight!

[skeeterzx225]

I had a 2015 VX HO that did that, new plugs solved it...

[sethman83]

I was hoping that would take care of it, but the plugs are new and it still does it.

I'll re-check the gaps, but they were all good when I put them in.

[Green Hulk]

How old is the fuel in the tank?

[sethman83]

I suppose it is from last season but stabilized. Maybe it'll clear up after a few hours on fresh gas.

[skeeterzx225]

Try some marine seafoam

[seabrook]

stabil made my lawn mover, boat, pwc run like CRAP- it wont hurt anything but i don't use it anymore- it was ok in 2 stroke motors