6E-214 Engine Control System (4HK1)
6
1.
Turn OFF the ignition.
2.
Check the fuel system line connections
between the fuel tank and the fuel supply
pump for tightness and all fuel hoses for cuts,
cracks and for the use of proper clamps.
Notice:
The fuel system from the fuel tank(s) to the fuel
supply pump is under a slight vacuum with the
engine running. As a result, air can enter the fuel
system if these connections are not tight. Air in the
fuel system will cause fuel rail pressure fluctuations
especially at high engine speed and load, which
may set this DTC.
3.
Pump the priming pump on the fuel filter until it
becomes firm. If there is a leak on the suction
side of the fuel system between the priming
pump and the fuel supply pump, the priming
pump will not build up sufficient firmness and
fuel leakage may occur.
4.
Start the engine and check for high side fuel
system leaks at the fuel supply pump and fuel
rail.
Notice:
Fuel may leak under the cylinder head cover from
the inlet high pressure line. In such case, the
engine oil level will rise. Inspect for fuel leakage
into the engine oil.
5.
Repair any fuel system leaks as necessary.
Did you find and correct the condition?
—
Go to Step 20
Go to Step 7
7
1.
Turn OFF the ignition.
2.
Remove the rubber fuel hose from the fuel
filter housing (fuel supply pump side). Use a
pan to catch the fuel leakage from the
removed fuel line.
Important:
The fuel vacuum pump / pressure gauge connector
and the adapter hose must be cleaned before
connecting to the fuel line. Otherwise, foreign
material internal to the tools line may damage the
fuel supply pump.
3.
Connect the suction side fuel pressure /
vacuum gauge adapter (5-8840-2844-0 / EN-
47667) with fuel pressure / vacuum gauge
assembly (5-8840-2844-0 / J-44638) in series
with the filter housing and the disconnected
fuel hose. Ensure the service tool and fuel line
connections are tight.
4.
Bleed the fuel system by priming the priming
pump until it becomes firm, then crank over
the engine for a maximum of 5 seconds.
Repeat as necessary until the engine starts.
5.
Let the engine run at idle for at least 1 minute.
6.
Monitor the fuel pressure / vacuum gauge
while holding the engine speed higher than
2500 RPM for a minimum of 1 minute.
Does the fuel pressure / vacuum gauge ever
indicate a larger vacuum than the specified amount
during the test?
5 inHg
Go to Step 9
Go to Step 8
Step
Action
Value(s)
Yes
No