Ski-Doo Ski Doo MX Z 2005 [892/1429] Engine equipped with rave valve does not reach its full operat ing rpm 500 to 1000 rpm slower

Ski-Doo Ski Doo MX Z 2005 [892/1429] Engine equipped with rave valve does not reach its full operat ing rpm 500 to 1000 rpm slower
Section 02 TROUBLESHOOTING GUIDE
Subsection 01 (ENGINE (2-STROKE))
Symptom: HIGH ENGINE OPERATING TEMPERATURE (LIQUID COOLED ENGINES).
1. Check temperature gauge sensor.
- False reading. Check terminal connections. If problem persists, replace sensor.
2. Check if heat exchangers are clean.
- Dirty heat exchangers. Clean heat exchangers.
3. Check coolant level and check if there is air infiltration in the system or if there are leaks in
gasket areas.
- Low coolant level or air in system. Add coolant until recommended level is reached, bleed sys-
tem and/or tighten clamps.
4. Check if coolant flows through system properly.
- Foreign particles and/or broken coolant pump impeller. Clean cooling system and/or replace
coolant pump impeller.
5. Check thermostat.
- Thermostat reacts slowly or not at all. Replace.
6. Check antifreeze concentration.
- Antifreeze concentration is too high. Adjust concentration according to BRP recommendations.
7. Check tank cap.
- Cap does not hold pressure. Replace.
8. Check carburetion.
- Improperly adjusted or inadequate carburetor components. Adjust according to specifications
(refer to TECHNICAL DATA) or replace inadequate component(s).
9. Check cylinder head gaskets.
- Worn gaskets. Replace.
10. Check ignition timing.
- Ignition timing is too advanced. Adjust according to specifications (refer to TECHNICAL DATA).
11. Check if there are leaks at air intake silencer and/or engine crankcase.
- Leak(s). Repair or replace.
12. Check condition and heat range of spark plugs.
- Melted spark plug tip or inadequate heat range. Replace.
Symptom: ENGINE EQUIPPED WITH RAVE VALVE DOES NOT REACH ITS FULL OPERAT-
ING RPM (500 TO 1000 RPM SLOWER).
1. Check RAVE valve pistons.
- Valve piston(s) is (are) not screwed to the bottom. Screw valve piston(s) to bottom.
2. Check that valve moves freely.
- Valve stuck in closed position. Clean.
3. Check RAVE valve stems.
- Bent RAVE valve stem(s). Replace.
4. Check RAVE valves.
- Jammed valve(s). Clean.
14 mmr2005-005

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