A Sea-Doo that idles smoothly at the dock but starts to stutter or hunt for RPM at low speed is a common but annoying issue, and it usually points to something specific in the fuel or ignition system.
Usual Suspects
A dirty throttle body, a weak spark plug, an idle air control issue or a small vacuum leak are the most frequent causes of a rough idle.
Confirm Before You Repair
Live data from the M-JET DIAGNOSTIC tool lets you watch RPM, fuel trim and sensor values while the engine idles, so you replace the right part the first time.
