STANDARD PROCEDURE - FUEL PRESSURE
SOLENOID TEST
(1) Disconn ect the large fuel ra il r eturn hose at
the ban jo fitting a nd clamp it off. At tach a jumper
hose to th e ba njo fitting and direct the h ose in to a
test vial. Cran k the engin e for 10 seconds (Fig. 17).
If retu rn fu el is present in the test vial, replace the
fuel pr essu re solenoid.
REMOVAL
Review the high pressure fuel system warning before
beginning repair (Refer to 14 - FUEL SYSTEM - WARNING)
WARNING: NO SPARKS, OPEN FLAMES OR SMOK-
ING. RISK OF POISONING FROM INHALING AND
SWALLOWING FUEL. RISK OF INJURY TO EYES
AND SKIN FROM CONTACT WITH FUEL. POUR
FUELS ONLY INTO SUITABLE AND APPROPRI-
ATELY MARKED CONTAINERS. WEAR PROTECTIVE
CLOTHING.
(1) Disconn ect nega tive battery cable.
(2) Remove fuel ra il (Refer to 14 - FUEL SYSTEM/
FUE L INJ ECTION/F UEL INJ ECTOR - REMOVAL).
(3) Clam p fuel rail secu rely in vise with prot ective
jaws.
NOTE: Once removed, the solenoid must always be
replaced.
(4) Count erhold and unscr ew the fuel pressure
solenoid and discard the sealing ring (F ig. 18).
INSTALLATION
Review the high pressure fuel system warning before
beginning repair (Refer to 14 - FUEL SYSTEM - WARNING)
WARNING: NO SPARKS, OPEN FLAMES OR SMOK-
ING. RISK OF POISONING FROM INHALING AND
SWALLOWING FUEL. RISK OF INJURY TO EYES
AND SKIN FROM CONTACT WITH FUEL. POUR
FUELS ONLY INTO SUITABLE AND APPROPRI-
ATELY MARKED CONTAINERS. WEAR PROTECTIVE
CLOTHING.
CAUTION: There is a special tightening procedure
for the fuel rail solenoid that must be followed
along with the proper use of a torque wrench.
Therefore the fuel rail must be removed before
installing the fuel pressure solenoid. Attention must
be paid to the sealing ring before assembly. If the
sealing ring is damaged when assembling, this
could result in a not so visible leak.
NOTE: Observe the alignment of the pressure sole-
noid. The electrical connection must point in the
same direction as the connection of the injection
line at the fuel rail.
(1) Scr ew the fuel pr essu re solenoid with new sea l-
ing disc to the fu el rail until hand tight (Fig. 18).
(2) Tighten t he fuel ra il solenoid as follows :
Fig. 17 CHECKING FUEL RAIL PRESSURE
SOLENOID LEAKAGE
1 - CLAMP RUBBER FUEL RETURN HOSES
2 - ATTACH SEPARATE RUBBER FUEL HOSE
3 - CONTAINER TO MEASURE FUEL LEAKAGE
4 - DISCONNECT RUBBER RETURN HOSE
Fig. 18 FUEL PRESSURE SOLENOID
1 - FUEL PRESSURE SOLENOID
2 - METAL SEALING DISC
3 - FUEL RAIL
4 - VISE
VA FUEL INJECTION 14 - 41
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