Honda Prelude 1993 Service Manual page 356

Inspection
1 . R e l i e v e f u e l p r e s s u r e ( s e e p a g e 1 1 - 1 1 4 1 .
2. Remove the service bolt on the fuel rail while hold-
ing the banjo bolt with another wrench. Attach the
tuel pressure gauge.
3. Start the engine. *Measure the fuel pressure with
the engine idling and vacuum hose ot the fuel pres-
sure regulator disconnected from the fuel pressure
regulator and pinched.
Plessur€ should be;
H23A1 ongine (USA: Si/Canada: SR),
F22Al engine (S):
2 5 5 - 3 O 5 k P a ( 2 . 5 5 - 3 . O 5 k g / c m 2 , 3 6 - 4 3 p s i )
H22A1 engine (USA: Si VTEC/Canada: SR_V):
23O-2AO kPa 12.3-2.8 kg/cmr. 33-4O psi)
4. Reconnect vacuum hose to the fuel Dressure
regulator.
Pr€ssure should b€:
H23Al engine (USA: Si/Canada: SR).
F22A1 ongine (S):
195-245 kPa (1.95-2.45 kg/cm2, 28-35 psi)
H22A1 engine (USA: Si VTEC/Canada: SR-V):
17O-22O kPs 11.7 -2.2 kg/cmr. 24-31 psi)
PRESSURE REGULATOR
': lf the engine will not stan, turn the ignition switch
on, wait for two seconds, turn it otf then back
on again and read the iuel pressure.
a lf the fuel pressure is not as specified. first check the
fuel pump (see page 1 1- 125). lf the pump is OK, check
the following:
-
lf the fuel pressure is higher than specified. inspect
loti
a Pinched or clogged Juel return hose or pipe.
a Faulty fuel pressure regulstor {see page 11-1221,
-
lf the fuel pressure is lower than specified inspect,
for:
a Clogged fuel filter.
a Faulty fuel pressure regulator {see p age 11-1221,
a Leakage in the tuel pipes or hoses.
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