Troubleshooting, Engine and drive train troubleshooting, Engine turns over, fails to start engine backfires – Polaris IQ Turbo LX User Manual
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TROUBLESHOOTING
Engine and Drive Train Troubleshooting
Engine Turns Over, Fails to Start
Engine Backfires
Probable Cause
Solution
Out of fuel
Refuel.
Water is present in fuel
See your dealer.
Old or non-recommended fuel
Replace with fresh recommended fuel.
Fouled or defective spark plugs
Inspect plugs and replace if necessary.
No spark to spark plug
See your dealer.
Water or fuel in crankcase
See your dealer.
Clogged fuel filter
Replace the filter.
Low battery voltage
Recharge the battery to 12.8 VDC.
Poor engine compression
See your dealer.
Mechanical failure
See your dealer.
Probable Cause
Solution
Weak spark from spark plug
Inspect, clean and/or replace spark plugs.
Incorrect spark plug gap or heat range
Set gap to specs or replace plugs.
Old or non-recommended fuel
Replace with fresh recommended fuel.
Mechanical failure
See your dealer.
Loose ignition connections
Check all connections and tighten.
Water present in fuel
Replace with fresh recommended fuel.
Exhaust manifold leak
Inspect and repair, or see your dealer.