Ski-Doo Formula 500 1998, Shop Manual

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Section 03 TROUBLESHOOTING
Subsection 02 (ENGINE)
03-02-7
6. Check antifreeze concentration.
a. Antifreeze concentration is too high.
Adjust concentration according to Bombardier’s recommendations.
7. Check tank cap.
a. Cap does not hold pressure.
Replace.
8. Check carburetion.
a. Improperly adjusted or inadequate carburetor components.
Adjust according to specifications (refer to TECHNICAL DATA 10) or replace
inadequate component(s).
9. Check cylinder head gaskets.
a. Worn gaskets.
Replace.
10. Check ignition timing.
a. Ignition timing is too advanced.
Adjust according to specifications (refer to TECHNICAL DATA 10).
11. Check if there are leaks at air intake silencer and/or engine crankcase.
a. Leak(s).
Repair or replace.
12. Check condition and heat range of spark plugs.
a. Melted spark plug tip or inadequate heat range.
Replace.
SYMPTOM ENGINE EQUIPPED WITH RAVE VALVE DOES NOT REACH ITS FULL
OPERATING RPM (500 TO 1000 RPM SLOWER).
CONDITION NORMAL USE.
Test/Inspection 1. Check RAVE valve pistons.
a. Valve piston(s) is (are) too far out.
Screw valve piston(s) to bottom.
2. Check RAVE valve stems.
a. Bent RAVE valve stem(s).
Replace.
3. Check RAVE valves.
a. Jammed valve(s).
Clean.
4. Check tension of RAVE springs.
a. Inadequate spring tension.
Replace.
5. Check RAVE pressure holes.
a. Clogged holes.
Clean.
6. Check clamps or sleeves.
a. Damaged clamp(s) or sleeve(s).
Replace.