Oil Pressure - Honda Prelude 1993 Service Manual

lf the oil pressure warning light stays on with the engine
running. check the engine oil level. lf the oil level is cor-
rect:
' 1 .
Connect a tachometer.
Remove the engine oil pressure switch and install
an oil pressure gauge.
S t a r t t h e e n g i n e . S h u t i t o f f i m m e d i a t e l y i f t h e
gauge registers no oil pressure. Repair the problem
before continuing.
Allow the engine to reach operating temperature
(radiator lan comes on at least twice). The pressure
should be:
Engine Oil Tamp6rrture: 176'F {80'C)
Engine Oil Pressure:
At ldle:
70 kP8 (9.7 kg/cm,, 10.0 psi)
minimum
At 3,flt0 rpm: 350 kPa (3.5 kg/cm,, 50 p3il
minimum
lf oil pressure is within specifications, replace the
oil pressure switch and recheck.
l f o i l p r e s s u r e i s N O T w i t h i n s p e c i f i c a t i o n s ,
inspect the oil pump (pages 8-10, 1 1|.
OIL PRESSURE GAUGE
ENGINE OIL PRESSURE
SWITCH MOUNTING HOLE
{F22A1 engino}
ENGINE OIL PRESSURE SWiTCH
MOUNTING HOLE
lH23A1, H22Al cneinos)
lH23A1, H22A1 .ngin.!l
Oil Jet
1!
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Oil Pressure
fnspection lH22A1 engine onlyl
Remove the oil jet (page 8-4) and inspect it as fol-
rows.
Make sure that a 1.1 mm {0.04 in} diameter drill
will go through the nozzle hole {1.2 mm t0.05 in)
diameter).
Insert the other end of the same 1.1 mm {0,04 in}
drill into the oil intake (1.2 mm (0.05 in) diame-
ter). Make sure the check ball moves smoothlv
and has a stroke of approximately 4.0 mm (0.16
I n , .
Check the oil jet operation with an air nozzle. lt
should take at least 200 kPa (2.0 kg/cm,,28 psi)
to unseat the check ball.
NOTE: Replace the oil jet assembly if the nozzl€
is damaged or bent,
Mounting torque is critical. Be very precise when
installing.
Torquo: 40 N.m (4.0 kg-m, 29 lb-ft)
8-8