1999 Ski-Doo Factory Shop Manual Volume Two, Page 194Get this manual
Section 04 ENGINE Subsection 11 (CARBURETOR AND FUEL PUMP)
Solenoid
Static Test Unplug electrical connector of the solenoid and connect it to 12 batteryThe solenoid must sound when it opensRepeat test several timesDynamic Test When checking the enrichment solenoid, disconnect engine temperature sensor connectorThe DPM system now operates as though the engine temperature was20C (- 4F) to allow maximum mixture enrichmentRemove the solenoid, hold it in hand and start the engineFor the enrichment solenoid, check if it vibrates as soon as the engine is startedFor the compensation solenoid, the air temperature sensor no4 must be at room temperatureOperate the engine at 3500 RPMThe solenoid must vibrate