Page 36 - Manual_Polaris_RZR

Page 36 - Manual_Polaris_RZR_ProXP-20-21

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GENERAL INFORMATION

ENGINE CRANKS BUT DOES NOT START 6. Check fuses or fuel system relays (where applicable).

1. Check battery voltage while cranking. If voltage is • If any fuel related system fuses are blown, replace
below 10.8V, vehicle may not start. fuses and recheck. Wiring concern or faulty parts may
• Perform Voltage Drop Test on Starter Circuit. Refer cause fuse to blow.
to Testing Voltage Drop page 1.78 for more • It is advisable to try swapping a relay with a known
information. Acceptable drop is 0.1V per good relay to check operation. Swap relay with like
connection, if too much drop is detected concern relay and see if vehicle starts.
may be caused by faulty starter, or solenoid.
• Charge battery. 7. Check fuel lines and fittings for leaks or damage.
• If equipped with a serviceable battery, check • If leak or damage is found repair, replace as
battery electrolyte level. Fill following procedure if necessary and recheck concern.
low.
• If no concerns are found proceed with fuel pressure
• If battery voltage is not ~12.6 V charge battery at testing.
recommended rate. Attempt starting after charging.
8. Perform a fuel pressure test during engine cranking.
• If battery still does not reach ~12.6 V, battery may
require replacement. • Verify that battery voltage is present at the fuel
pump. A low voltage concern may cause the pump
2. Visually inspect vehicle for any electrical connectors to be inoperable.
or wiring that may be loose or damaged. Check • Check using fuel pressure gauge to see that fuel
connectors for water intrusion or corrosion. pressure is within specification.
• If connections are found to be loose, repair • If not within specification, if equipped check fuel
connector as necessary.
filter / screen for restriction.
• If connector is found to have corrosion or water • If no concern is found with filter or pressure is still
within connectors, clean, dry, and reconnect.
low after filter replacement, suspect weak or faulty
• Repair any damage to wiring. fuel pump.
3. Check vehicle for trouble codes. Refer to Digital 9. Inspect spark plug wiring, spark plug, and check for
Wrench® Diagnostic. spark.
• If codes are present proceed with testing per Digital • Check to make sure that spark plug is tight.
Wrench®.
• Inspect spark plug for fouling. Inspect plug gap
using feeler gauge or similar tool. Adjust to
4. Check air box and filter for debris or moisture.
specification if needed.
• If debris is found clear debris and recheck for
concern. • Disconnect plug wire and install an inline spark
tester between the spark plug wire and spark plug.
• If water is found within air box, dry box and filter. It Check for spark. If a spark tester is not available,
is possible that engine may have ingested water. remove the spark plug and reinstall wire to plug
This could cause engine failure, refer to Engine connection. Using caution crank engine while
Troubleshooting page 1.35 watching spark plug for spark.

5. Check fuel level and condition in vehicle.
CAUTION
• Possible to have incorrect reading from fuel gauge. DO NOT TOUCH SPARK PLUG DURING TEST.
Using a flashlight, check for fuel in tank. If no fuel is TOUCHING SPARK PLUG COULD RESULT IN
visible, fill with fuel before further diagnostic.
ELECTRIC SHOCK.
• Check fuel quality, pull fuel sample or drain tank
and refill with fresh fuel from a reliable source.
• If plug does not spark in previous test, check
IMPORTANT connections at ignition coil. Ensure that the ignition
coil has power and is receiving signal from the
When filling with fuel, ensure that the fuel being used ECU. Concern may be caused by faulty ignition coil
meets the correct octane rating specific to the vehicle.
or electrical concern.
10.Listen for unusual noises while cranking.
• If filled with fuel, vehicle starts, and gauge still is not
reading test the fuel sending unit.

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