Stephen Kenna
New Member
- Oct 4, 2018
- 27
- Boat Info
- 2002 Sea Ray 2600 Sundancer
- Engines
- 5.7 GM 350 w/ bravo III duoprop drive
Hoping someone else has had this issue and can point me in the right direction.
My 2001 SeaRay 260 Sundancer with a 350 EFI/Bravo 3 has a knocking noise that starts almost exactly after 45 minutes of cruising and has now made this noise on last 6 outings.
The motor starts effortlessly and runs super for 45 minutes then it starts to make a intermittent knock/clunk noise and then boat starts to slow down as if something is binding. (driveshaft/ujoints?) I slow down and can idle in gear with no noises but if I power up to plane out the knocking starts again. If I stay put for a half hour or so and then start up again I can plane out and cruise at 15 to 28 mph for about 25- 35 minutes and then it starts clunking again. I then idle down and make my way home thru the channels to my dock at idle speeds. There is no noise at these low speeds. No clunking when shifting gears and no apparent noise when turning the boat.
My 2001 SeaRay 260 Sundancer with a 350 EFI/Bravo 3 has a knocking noise that starts almost exactly after 45 minutes of cruising and has now made this noise on last 6 outings.
The motor starts effortlessly and runs super for 45 minutes then it starts to make a intermittent knock/clunk noise and then boat starts to slow down as if something is binding. (driveshaft/ujoints?) I slow down and can idle in gear with no noises but if I power up to plane out the knocking starts again. If I stay put for a half hour or so and then start up again I can plane out and cruise at 15 to 28 mph for about 25- 35 minutes and then it starts clunking again. I then idle down and make my way home thru the channels to my dock at idle speeds. There is no noise at these low speeds. No clunking when shifting gears and no apparent noise when turning the boat.
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