Ever since I've owned my current boat (98 Searay 180 with 3.0L) I have had an inconsistent idle issue. If I set the idle speed to 650-700rpm in forward gear idle it is good. After I run at higher RPM and slow down and put it in neutral it will hang around 900rpm, then drop to 800 rpm after 20 to 30 seconds. I'm stuck on why it doesn't return back to the 650-700rpm.
I double checked the float height, it's spot on. I checked the throttle cable and it's not too tight, and it has slight pressure pushing the butterfly closed. The concern that I have is after I pull a skier or a tube it will idle at the 900 to 800rpm and I just don't like to engage the drive at that rpm. Any thoughts of what to try ? I have reused the airhorn gasket twice now, possible vacuum leak ?
I double checked the float height, it's spot on. I checked the throttle cable and it's not too tight, and it has slight pressure pushing the butterfly closed. The concern that I have is after I pull a skier or a tube it will idle at the 900 to 800rpm and I just don't like to engage the drive at that rpm. Any thoughts of what to try ? I have reused the airhorn gasket twice now, possible vacuum leak ?