01-004/05 2004-2005 RX-8 - ENGINE CRANKS NO START
BULLETIN NOTE This bulletin supersedes the previous bulletin 01-004/05, issued 1/20/05. The DESCRIPTION REPAIR PROCEDURE "A" - DECHOKE / ENGINE STARTING, PART(S) INFORMATION and WARRANTY INFORMATION sections have been changed.
APPLICABLE MODEL(S) / VINS
Some vehicles may experience difficulty starting (cranks no start). This occurs after driving the vehicle a short distance without engine reaching normal operating temperature. Examples: starting a vehicle and moving it to wash it, engine stall due to mis-application of clutch then restart.
A cranks, no start condition may be caused either by flooded spark plugs or lower than normal compression due to fuel flooding.
Because some early calibrations do not have the improvements to cold start performance, it is important to update the vehicle's PCM to prevent possible no start concerns. Make sure to update the PCM to the latest calibration if the vehicle exhibits a no-start concern due to fuel flooding.
NOTE: After repairs, provide customers with DE-CHOKING PROCEDURE WHEN ENGINE CRANKS BUT DOES NOT START information (for customers to try after a "CRANKS, NO START" condition, before towing to dealership).
REPAIR PROCEDURE "A" - DECHOKE / ENGINE STARTING
1. Verify concern.
2. Verify battery is fully charged.
NOTE: Hard/no start concerns may be caused by lower than specification cranking compression at engine start. Charge and inspect vehicle battery, replace with 0000-80-MT35-WB if necessary (see service bulletin 01-042/04 - BATTERY REPLACEMENT - SERVICE TIP). For warranty reimbursement, Midtronics printout showing battery failed must be attached to repair order & readings must be documented on warranty claim.
3. Disconnect the secondary air injection pump electrical connector (B1-04).
NOTE: This will protect the catalytic converter by preventing rapid light off due to unburned fuel purging from the engine in the following steps.
4. Attempt to start the engine observing the following:
A. Fully depress the accelerator pedal to the floor (dechoke (clear flood) mode prevents fuel injection operation while cranking).
B. Crank the engine for up to ten seconds.
^ If the engine starts, proceed to STEP 5.
^ If the engine fails to start, proceed to next step.
C. Release ignition key from start position (shut engine off) for 5-seconds.
D. Crank the engine for up to ten seconds (DO NOT depress accelerator pedal).
^ If the engine starts, proceed to STEP 5
^ If the engine fails to start, perform REPAIR PROCEDURE "B" - COMBUSTION CHAMBER CLEANING & SPARK PLUG REPLACEMENT.
5. Keep engine running between 1500-2000 RPM until engine speed has stabilized. Maintain this engine speed until all smoke has dissipated and/or engine has come to full operating temperature.
NOTE: Do not race the engine, this may cause catalyst damage.
6. Shut engine off
7. Connect the secondary air injection pump connector B1-04.