TROUBLESHOOTING

Engine performance complaints usually fall under one of the basic headings listed in the Troubleshooting Guide. When a problem cannot be easily diagnosed, consult a Crusader Challenger Engines Servicing Certifi ed Dealer for assistance.

Malfunction Possible Cause Corrective Action

Engine will not crank with the Problem with the engine Contact Crusader Challenger starter motor, or cranks slowly. management system. Engines Certifi ed Dealer.

Battery switch turned OFF (if Turn the battery switch ON. equipped)

Remote control not in Neutral Position the remote control exactly

NOTICE: Battery voltage position. in Neutral. must be AT or ABOVE 10 volts while the engine is cranking Blown ignition/starter fuse. Replace the fuse or the engine management system will not function.

Loose and/or dirty wiring Check the battery cables and connections. starter circuit wiring. Clean and tighten all connections. Repair or replace the damaged wiring.

Dead Battery Recharge, test and replace as necessary.

Engine Cranks - will not Improper starting procedure. Refer to “STARTING start or is hard starting. ENGINE” in the OPERATING INSTRUCTIONS section.

NOTICE: Battery voltage No fuel - empty fuel tank Check the fuel tank level - fi ll must be AT or ABOVE 10 tank(s). Open shut-off valve(s). volts while the engine is cranking or the engine management system Plugged fuel fi lters.

will not function.

No fuel to the throttle body (TBI) Plugged or kinked fuel lines or or the injectors (MPI) plugged fuel-tank vent. Faulty fuel pump - check electrical connections. Faulty anti-siphon valve.

Engine fl ooded Open the throttle 100% and crank the engine. When the engine starts, immediately return the throttle to 1000 RPM.

Ignition system malfunction Contact Crusader Challenger Engines Certifi ed Dealer.

Contaminated fuel Check fuel for water or other contamination. If contaminated, drain and clean the fuel system.

Malfunction Possible Cause Corrective Action

Engine Overheats Loose or worn drive belt(s) Adjust or replace the belts as necessary.

Collapsed, kinked or leaking Replace the hoses. hoses.

Transmission/engine oil cooler Remove the water hoses and fl ush plugged in opposite direction of the normal fl ow.

Faulty thermostat

Sea-water intake valve partially/fully closed. Replace the thermostat.

Open the valve completely.

Restricted sea-water pickup Remove restriction.

Faulty temperature sending unit Test and replace as necessary. or gauge

Sea-water pump impeller worn or Replace the impeller. damaged

The following applies to engines Coolant level low in the fresh-water Check the cooling system for leaks. equipped with Fresh-Water section of the cooling system Refi ll the system. See Warning Cooling (FWC) systems. before removing the fi ll cap.

Heat exchanger passages plugged Clean and fl ush the exchanger. with scales and debris

Improper coolant mixture Install the proper coolant mixture (50% antifreeze - 50% water).

Insuffi cient engine temperature Faulty thermostat Replace the thermostat.

Faulty temperature sender Replace the temperature sender.

Engine oil pressure low Faulty oil pressure sending unit Test and replace as necessary. or gauge

Oil level low Add specifi ed oil. Check the engine for leaks.

Crankcase overfi lled causing oil Remove the required amount of oil. aeration Determine the cause of overfi lled condition (improper fi lling, etc.).

Diluted or improper grade/ Change the oil and fi lter. viscosity of oil Determine the cause of dilution. (insuffi cient engine temperature, excessive idling, etc.)

Malfunction Possible Cause Corrective Action

Transmission slipping - Low oil level Add specifi ed oil. Check the erratic operation transmission for leaks.

Transmission overfi lled causing Drain required amount of oil. oil aeration

Transmission shift lever not fully Adjust the shift linkage and remote engaged control. Check the shift cables for freedom of movement and binding.

Contaminated fl uid Determine and correct the contamination source and change the fl uid.

Engine misses, runs rough Ignition system malfunction Contact Crusader Challenger Engines and/or backfi res Certifi ed Dealer.

Plugged fuel fi lters Replace the fuel fi lters.

Faulty fuel pump. Have fuel pump replaced by a Crusader Challenger Engines Certifi ed Dealer.

Plugged or kinked fuel lines or Repair or replace the fuel lines. fuel tank vent Remove obstruction.

Anti-siphon valve faulty

Flame arrestor dirty Clean or replace as necessary.

Clean the fl ame arrestor.

Poor engine or boat Ignition malfunction Contact Crusader Challenger Engines Certifi ed Dealer.

performance

Throttle not fully open Check the remote control and throttle body linkage for freedom of movement and proper adjustment.

Damaged or improper propeller Repair or replace as necessary.

Excessive water in the bilge Pump the water out and investigate source of entry.

Excessive growth on the boat Clean the bottom and paint with an bottom anti-fouling paint.

Boat overloaded Reduce and/or redistribute the load.

Dirty fl ame arrestor Clean the fl ame arrestor.

Engine overheating Repair the cooling system (See “Engine Overheats”).