Fuel in Cooling System
The probable root cause is listed below:
- Internal cylinder head leak
Perform the following check:
- Remove the valve cover. Remove the fuel supply. Remove the fuel return line from the cylinder head. Cap the fuel return connector and apply
700 kPa (102 psi) maximum air pressure to the fuel supply connector. Check for fuel leakage around the fuel injector. If leakage is present, remove the fuel injector. Install a new O-ring seal.
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