P0314
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE lamp on.
Loss of power.
Limp home.
See also SI 248-2306 for improved fault diagnosis.
Misfire Mechanical Fault
Fault symptoms
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Limp home.
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Note
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See also SI 248-2306 for improved fault diagnosis.
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Conditions
The following conditions apply for this DTC:
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The diagnosis has detected a sufficiently large number of misfires. The diagnosis is carried out between 1100-2300 rpm and more than 8 mg of fuel, and at 2600-4800 rpm and more than 15 mg of fuel. The coolant temperature should be 60°C or more.
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Diagnostic help
Anything which can cause misfires can cause the diagnostic trouble code, such as abnormal combustion in any of the cylinders. This may be due to
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leaking high-pressure fuel lines (line between pump and injector),
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damaged pistons, cylinders or valves
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mechanical fault in the engine
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Defective or blocked injectors
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blocked or leaking fuel bridges (applies to the conical connection between nozzles and fuel bridges). See method for
Fuel bridge
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Damaged sealing washers to injectors
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Important
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Be particulary observant regardning cleanliness when working on the fuel system. Loss of function may occur due to very small particles. Prevent dirt and grime from entering the fuel system by cleaning the connections and plugging pipes and lines during disassembly. Use 82 92 948 Plugs, A/C system assembly. Keep components free from contaminants during storage.
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See value in Tech2 - Misfiring, cylinders
