General Troubleshooting Information

In this section, there is a list of possible engine problems that may be encountered, accompanied by possible causes and corrections. The illustrated diagrams and troubleshooting information are of a general nature. Final design of the overall system for your engine application may be different. See the engine distributor or servicing dealer for questions.

A reliable program for troubleshooting engine problems should include the following basic diagnostic process:

• Know the engine and all related systems.
• Study the problem thoroughly.
• Relate the symptoms to your knowledge of engines.
• Diagnose the problem starting with the easiest things first.
• Double-check before beginning the disassembly.
• Determine cause and make a thorough repair.
• After making repairs, operate the engine under normal conditions to verify that the problem and cause was corrected.

NOTE: All engines have electronic control systems which may send diagnostic trouble codes to signal problems, see Diagnostic Trouble Codes (DTCs) — Operation in the troubleshooting section.

1. If fault codes are present, follow the appropriate DTC procedure.
2. If the problem is not corrected, contact the servicing dealer.
3. If engine has problems, but no fault codes are displayed, see Engine Troubleshooting in the troubleshooting section.