Section 8.2
Backfire
To determine if any ECM problems apply to the engine Backfire condition, perform the following:
- Turn on the ignition. Plug the Diagnostic Data Reader (DDR) or the Detroit Diesel Diagnostic Link (DDDL) into the Diagnostic Connector.
Note: Use the Pro-Link kit to connect the DDR. Use PC card installed in the computer to connect the DDDL.
- Use the DDR or DDDL to display which ECM is on the engine.
- Use the DDR or DDDL to confirm that the proper calibration is in the ECM.
- If the improper calibration is in the ECM, call Detroit Diesel Technical Service.
- If the proper calibration is in the ECM, go to step 4 .
- Determine whether the backfire is taking place during engine deceleration or during engine shutdown.
- If the backfire occurs during engine deceleration, check Pulse Width Modulated Stepper Motor Valve (PSV) operation. Refer to "8.3.1 PSV Operation Check" .
- If the backfire occurs during engine shutdown, check the fuel line installation and low pressure valve shut off. Refer to "8.6 Shutdown" .
Series 50G and 60G Troubleshooting Guide - 6SE482 |
Generated on 10-13-2008 |