Diagnostic Notes

Diagnosis by Symptom is used to find the correct test procedure for a given symptom. Possible Cause and Actions within this section are "Fuel Related" only. Verify correct system application to ensure that vehicle has the given component. Always use Flow of Diagnosis. Flow of Diagnosis

Problems may be due to fuel system corrosion and subsequent fuel filter plugging, deterioration of rubber components and/or air/fuel mixture leaning.

ALCOHOL-IN-FUEL
Alcohol-in-fuel can be detrimental to fuel system components and may cause driveability problems such as hesitation, lack of power, stall, no start, etc. If an excessive amount of alcohol in the fuel system is suspected as the cause of a driveability condition, refer to Alcohol-In-Fuel Test. Testing and Inspection

PRE-CHECKS:

1. Check for adequate fuel supply in fuel tank. (Do not rely on fuel gauge).

2. Verify battery is fully charged.

3. Verify fuse/fuse link integrity.

4. Inspect all hoses, fuel lines, and connections for fuel leaks, kinks and proper routing.

5. Verify correct fuel type and quality.

6. Check TSB's for fuel system design updates.