Vibration at Idle (Twins) On for 3 off for 3 seconds
#2
What kind of boat?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
#3
Platinum Member
Platinum Member
iTrader: (6)
What kind of boat?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
#5
Registered
iTrader: (1)
What kind of boat?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
Reason I ask: I've seen some boats like Fountains and NorTechs that have swim platforms that are "enclosed" when at idle, "burp" exhaust pressure out once it builds up enough pressure to lift the aft end of the boat and vibrate out.
If the above does not apply, have you narrowed it down to which side has an issue?
#7
The 33 AVS DOES have the right 'kind' of trapping swim platform that could cause this.
My suggestion to see if this IS the issue, is idle along side of someone else, and see if they can see they can see the "burp" happen. Having someone lay down back over the swim platform may throw off the weight balance which may affect this "timing" (good or bad).
Idle beside a friend, and have a thumbs up/thumbs down hand signal; depicting to your friend in the other boat, when the vibration is on/off; and see if someone outside the boat looking at the rear can correlate.
Dropping the tabs all the way down at idle may raise the aft end up, enough to keep the air pocket from forming. Same goes with also/either tucking the drives ALL the way in to the transom.