Section 03
TROUBLESHOOTING
Subsection 02
(ENGINE)
MMR2004-106_03_02A.FM
03-02-5
9. Check exhaust system.
a. Restriction or exhaust system leakage.
Replace or reseal with Ultra Copper.
10. Check ignition timing.
a. Decrease in power due to delayed ignition.
Adjust according to specifications (refer to TECHNICAL DATA).
11. Check engine compression.
a. Worn piston(s) and ring(s).
Replace (refer to TECHNICAL DATA for specifications).
12. Check engine cooling system.
a. Improper fan belt tension.
Adjust fan belt (refer to TECHNICAL DATA).
b. Coolant level is low, cap fails to pressurize system or air circulates through lines.
Adjust level, replace cap or bleed cooling system.
13. Check reed valve.
a. Improper tightness and/or opening.
Replace or adjust. Refer to proper engine subsection.
SYMPTOM
ENGINE DETONATION AT MAXIMUM RPM.
CONDITION
NORMAL USE.
Test/Inspection
1. Check which type of fuel is used.
a. Octane number is too low and/or alcohol level is too high.
Use recommended fuel type.
2. Check spark plug type.
a. Improper spark plug heat range.
Install recommended spark plugs (refer to TECHNICAL DATA).
3. Check exhaust system.
a. Too much restriction.
Replace.
4. Check ignition timing.
a. Timing is too advanced.
Adjust according to specifications (refer to TECHNICAL DATA).
5. Check carburetion.
a. Fouled and/or improper carburetor components.
Clean or replace according to specifications (refer to TECHNICAL DATA).
6. Check compression ratio and combustion chamber volume.
a. Compression ratio is too high.
Install genuine parts.
SYMPTOM
ENGINE DOES NOT OFFER MAXIMUM POWER AND/OR DOES NOT REACH
MAXIMUM OPERATING RPM.
CONDITION
NORMAL USE.
Содержание ski-doo Tundra Scandic 2004 Series
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