Passport 2WD L4-2559cc 2.6L SOHC (4ZE1) (1994)
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On the 1995.5 Passport, the Schrader valve is near the right front of the engine, on the high pressure delivery line.
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Wrap a shop towel around the Schrader valve to minimize fuel spillage.
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After connecting the Fuel Pressure Gauge Adapter to the Schrader valve, make sure the gauge hose and gauge head are positioned lower than
the Schrader valve.
5.
Pressurize the fuel rail by turning the ignition switch on (for about 5 seconds), then off. (Do not crank the engine.)
6.
Bleed the air from the fuel pressure gauge hose by loosening its fitting on the Schrader valve. Wrap a shop towel around the fitting to minimize
fuel spillage.
7.
Retighten the fuel pressure gauge fitting.
8.
Pressurize the fuel rail by turning the ignition switch on (for about 5 seconds), then off. (Do not crank the engine.)
9.
Check the fuel pressure reading on the gauge; it should be 46 PSIG at sea level (1 to 5 PSIG less at higher altitudes).
Is the fuel pressure holding steady at 41 PSIG or more?
Yes - Go to the next step.
No - Refer to the 1994 or 1995.5 Passport Service Manual (beginning on page 6E1-44) for further testing.
10.
Leave the gauge connected to the fuel rail.
After about 30 minutes, is the fuel pressure 20 PSIG or more?
Yes - The injector leak rate is not the cause of excessive engine cranking. Refer to the 1994 or 1995.5 Passport Service Manual (beginning on
page 6E1-81) to find the cause and correction of the problem.
No - Go to the next step.
11.
Replace all six fuel injectors. Refer to the 1994 or 1995.5 Passport Service Manual (beginning on page 6E1-114) for information about replacing
the fuel injectors.
NOTE:
Before installing the injectors, lube their 0-ring seals with engine oil.
PARTS INFORMATION
Gasket, Common Chamber (1 required): P/N 8-94364-577-0, H/C 4384491
Gasket, Throttle Body (1 required):
P/N 8-94389-939-0, H/C 4389037
Injector Assembly (6 required):
P/N 8-17105-388-0, H/C 4375853
