2011 Polaris Ranger RZR ATV Service Manual, Page 129Get this manual

2011 Polaris Ranger RZR ATV Service Manual, Page 129

ELECTRONIC FUEL INJECTION Fuel Injector Service Injector problems typically fall into three general categorieselectrical,
as follows: Injector leakage is very unlikely, but in rare instances it can be internal (past the tip of the valve needle),
or external (weeping around the injector body)The loss of system pressure from the leakage can cause hot restart problems
and longer cranking timesInjector problems due to dirt or clogging are unlikely due to the design of the injectors, the high
fuel pressure, the use of filters and the detergent additives in the gasolineSymptoms that could be caused by dirtyclogged
injectors include rough idle, hesitationstumble during acceleration, or triggering of fault codes related to fuel deliveryInjector
clogging is usually caused by buildup of deposits on the director plate, restricting the flow of fuel, resulting in poor
spray patternSome contributing factors to injector clogging include; dirty air filters, higher than normal operating temperatures,
short operating intervals and dirty, incorrect, or poor quality fuelCleaning of clogged injectors is not recommended; they