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Troubleshooting
NOTE: In all scenarios, perform a TPS/ISC reset first and check fuel pressure, which should be 3 bar or
43.5 psi.
Problem: Starting impaired
Condition Remedy
1. Battery discharged or defective
2. Gas contaminated
3. Air filter/housing contaminated
4. Ambient temperature below -20° F (-29° C)
(coldest temperature at which engine will start)
1. Test, charge, and/or replace battery
2. Drain gas tank and fill with clean/fresh regular 87 octane
E10 fuel
3. Clean or replace air filter/housing
4. Use a jump pack to start engine
Problem: Idling or low speed impaired
Condition Remedy
1. Gas contaminated
2. TPS out of adjustment
3. Air filter/housing contaminated
4. ISC malfunction
1. Drain gas tank and fill with clean/fresh regular 87 octane
E10 fuel
2. Adjust TPS
3. Clean or replace air filter/housing
4. Inspect/replace ISC
Problem: Medium or high speed impaired
Condition Remedy
1. Gas contaminated
2. Air filter/housing contaminated
3. Exhaust system/spark arrestor debris and catalyst damage
1. Drain gas tank and fill with clean gas
2. Clean or replace air filter/housing
3. Clean exhaust system and spark arrestor. Inspect catalyst
with a borescope and replace if damaged.
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