Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 5
   
   If conditions were not corrected, see appropriate BASIC DIAGNOSTIC PROCEDURES article.
2. 6
   
   An EVAP canister that is saturated will cause a rich condition. Fuel in the vacuum line to the fuel pressure regulator indicates a bad regulator. If conditions were not corrected, a worn cam, worn intake or exhaust valves, or other engine mechanical failure may be at fault.