engine ACURA NSX 1997 Service Owners Manual

Engine Lubricatio n
Illustrated Index
NOTE:
• Us e ne w O-ring s whe n reassembling .
• Appl y oi l t o O-ring s befor e installation .
• Us e liqui d gasket , Par t No . 0871 8-000 1 o r 0871 8-
0003 .
• I f th e botto m o f th e oi l pa n i s deformed , i t shoul d b e
repaire d o r th e oi l pa n shoul d b e replace d t o retai n
prope r clearanc e betwee n th e scree n an d th e bottom .
OIL CONTRO L ORIFIC ERemove wit h 6 m m
bol t an d clean .
O-RIN GReplace .
OIL FILTE R BAS EIllustrate d Index ,
pag e 8-1 2
OIL FILTE ROne tur n o r22 N- m (2. 2 kgf-m ,16 Ibf-ft )Replacemen t 8- 5
OI L PUM P
Illustrate d index , pag e 8- 7
Inspection , pag e 8 -8
Appl y liqui d gaske t t o
matin g surfac e o f engin e block .
OIL PA N GASKE TReplace.
OIL PA N• D o no t defor m
th e bottom .
• Refe r t o pag e 8-1 0whe n installing .
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Engine Oil

Inspection

1. Check engine oil with the engine off and the car

parked on level ground.

2. Make certain that the oil level indicated on the

dipstick is between the upper and lower marks.

3. If the level has dropped close to the lower mark,

add oil until it reaches the upper mark.

CAUTION: Insert the dipstick carefully to avoid

bending it.ProCarManuals.com

Replacement

CAUTION: Remove the drain plug carefully while the en-

gine is hot, the hot oil may cause scalding.

1. Warm up the engine.

2. Drain the engine oil.

3. Reinstall the drain plug with a new washer, and refill

with the recommended oil.

NOTE: Under normal conditions, the oil filter should be

replaced at every other oil change. Under severe condi-

tions, the oil filter should be replaced at each oil change.ProCarManuals.com

Oil Filte r
Replacemen t
CAUTION: Loose n th e oi l filte r carefull y whil e th e
engin e is hot , the hot oi l ma y cause scalding .
1 . Remov e th e oi l filte r wit h th e specia l too l a s shown .
OIL FILTE R WRENC H07912-611000 1Torque: On e tur n(22 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
2. Inspec t th e thread s an d rubbe r sea l o n th e ne w filter .
Wip e of f th e sea t o n oi l filte r base , the n appl y a ligh t
coa t o f oi l t o th e rubber seal an d instal l th e filter .
3 . Afte r th e rubbe r sea l i s seate d agains t th e base ,
tighte n th e oi l filte r b y turnin g i t approximatel y on e
turn .
Torque : On e tur n (2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
4 . Star t th e engine , an d chec k th e filte r fo r oi l leakage .
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Oil Pressur e
Testing
If th e oi l pressur e warnin g ligh t stay s o n wit h th e engin e
running , chec k th e engin e oi l level . I f th e oi l leve l i s
correct :
1 . Remov e th e engine oil pressur e switch , an d instal l
a n oi l pressur e gauge .
2 . Star t th e engine . Shu t i t of f immediatel y i f th e
gaug e register s n o oi l pressure . Repai r th e proble m
before continuing .
3. Allo w th e engin e t o reac h operatin g temperatur e
(fa n come s o n a t leas t twice) . Th e pressur e shoul d
be:
Engin e Oi l Pressure :
A t Idle : 7 0 kP a (0. 7 kgf/cm2,1 0 psi )
minimu m
A t 3,00 0 rpm : 34 0 kP a (3. 5 kgf/cm
2, 5 0 psi )
minimu m
• I f oi l pressur e i s withi n specifications , replac e th e
oi l pressur e sende r an d recheck .
• I f oi l pressur e i s NO T withi n specifications , inspec t
th e oi l pum p (se e pag e 8-8 ).
ENGIN E OI L PRESSUR ESWITCHMOUNTIN G HOL E
OIL PRESSUR E GAUG EADAPTO R(1/8"-28, BSPT )
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Oil Pum p
Removal/lnspection/lnstallatio n
1. Drai n th e engine oil.
2 . Remov e th e timin g bel t (se e pag e 6-15 ).
3 . Remov e th e dipstic k an d th e pipe .
4. Remov e th e oi l filte r assembly .
5. Remov e th e fron t exhaus t manifol d (M/ T se e pag e
6-24).
6 . Remov e th e oi l pan .
7 . Remov e th e oi l screen .
8 . Remov e th e baffl e plate .
9 . Remov e th e oi l pas s pip e an d th e joint .
10. Remov e th e mountin g bolt s an d th e oi l pum p
assembly . 11
. Remov e th e nin e screw s fro m th e pum p housing ,
the n separat e th e housin g an d cover .
12 . Chec k th e inner-to-oute r roto r radia l clearance .
Inner-to-Oute r Roto r Radia l Clearanc e
Standard (New) : 0.0 5-0.2 1 m m
(0.00 2-0.00 8 in )
Servic e Limit : 0.2 3 m m (0.00 9 in )
Replace .OIL PUM P
O-RING S
Replace .
OI L SCREE N
BAFFLE PLAT E
OI L PAS S PIP E
AND JOIN T
OUTE R ROTO R
13. Chec k th e housing-to-roto r axia l clearance .
Housing-to-Roto r Axia l Clearanc e
Standar d (New) : 0.0 2-0.0 7 m m
(0.00 1-0.00 3 in )
Servic e Limit : 0.1 2 m m (0.00 5 in )
OUTE R ROTO R
PUMP HOUSIN G
INNER ROTO R
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Cooling
Illustrate d Inde x
Syste m is unde r hig h pressur e whe n th e
engin e i s hot . T o avoi d dange r o f releasin g scaldin g
engin e coolant , remov e th e ca p onl y whe n th e engin e i s
cool .
Tota l Coolin g Syste m Capacity : Includin g expansio n
tank 2. 1 (2. 2 U S qt , 1. 8 Im p qt )
M/T : 16. 0 (17. 0 US qt , 14. 1 Imp qt )
A/T : 16. 5 (17. 4 US qt , 14. 5 Imp qt )
NOTE :
• Chec k al l coolin g syste m hose s fo r damage ,
leak s o r deterioratio n an d replac e i f necessary .
• Chec k al l hos e clamp s an d retighte n i f
necessary .
• Us e ne w O-ring s whe n reassembling .
RADIATOREngine coolan t refillin g an d
bleeding , pag e 10- 5
Leak test , pag e 10- 8
Inspec t soldere d joint s an d
seam s fo r leaks .
Blo w ou t dir t fro m betwee n
cor e fin s wit h compresse d air .
I f insects , etc. , ar e cloggin g
radiator , was h the m of f wit h
low-pressur e water .
Radiator , Wate r Pipe s an d Hoses :
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EXPANSION TAN K
Refillin g an d bleeding , pag e 10- 5
Lea k Test , pag e 10- 8
ENGINE OI L
COOLE R PIP E
AUTOMATI C TRANSMISSIO N
FLUI D (ATF ) COOLE R
CAPTest , pag e 10- 8
ENGIN EOIL COOLE R
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Engine Coolant Refilling and Bleeding

CAUTION: When pouring engine coolant, be sure to

shut the relay box lid and not let coolant spill on the

electrical parts or the paint. If any coolant spills, rinse it

off immediately.

NOTE:

• Perform this maintenance when the engine is cool.

• Before replacing the coolant, turn the ignition ON,

slowly turn the climate control temperature knob to

90° and turn off the ignition. This will allow the

coolant in the heater to drain out with the rest of the

system.
1. Open the hood, the rear window and the engine

cover.

2. Remove the cover protecting the water pipes and

shift cables on the underside of the car.

3. Before removing the expansion tank cap, first

loosen the cap to lower pressure.

CAUTION: Do not remove the expansion tank cap

when engine is hot. The coolant is under pressure

and may blow out and scald you. Open the cap

slowly when the engine is cool.

4. Loosen the drain plug in the bottom of the radiator,

and drain the coolant.

5. Remove the two drain bolts from the water pipes,

and drain the coolant.

WASHERS

Replace.

DRAIN BOLTS

15 N-m (1.5 kgf-m, 11 Ibf-ft)
DRAIN HOLE
DRAIN PLUGProCarManuals.com

Radiator
Engine Coolan t Refillin g an d Bleedin g (cont'd)
6. Instal l rubbe r hose s o n th e drai n bolt s a t th e fron t
an d rea r o f th e engin e unde r th e cylinde r banks .
Loose n th e drai n bolt s t o drai n th e coolant .
• Drainin g ca n b e don e mor e quickl y i f al l th e blee d
bolt s an d plu g ar e als o opened . Befor e openin g
them , mak e sur e th e coolan t leve l i n th e expan -
sio n tan k ha s com e dow n completel y s o tha t th e
coolan t wil l no t pou r ou t o f th e blee d bolt s an d
plug .
7. Whe n th e coolan t stop s draining , tighte n th e
radiato r drai n plug , wate r pip e drai n bolt s an d
engin e drai n bolts .
• B e sur e t o replac e th e wate r pip e drai n bol t
washer s wit h ne w ones .
REAR ENGIN E DRAI N BOL T
9. 8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
8. Ope n al l fou r bleeders .
1 ) Loose n th e radiato r blee d plug .
2 ) Remov e th e heate r pip e blee d bolt .
3 ) Loose n th e wate r pip e blee d bolt .
4 ) Loose n th e engin e blee d bol t o n th e therm o
cover .
9 . Mi x th e recommende d antifreeze/coolan t wit h a n
equa l amoun t o f wate r i n a clea n container .
NOTE:
• Alway s us e Genuin e Hond a Antifreeze/Coolant .
Usin g a non-Hond a coolan t ca n resul t i n corro -
sion , causin g th e coolin g syste m to malfunctio n
o r fail .
• Fo r bes t corrosio n protection , th e coolan t con -
centration s mus t b e maintaine d year-roun d a t
50 % minimum . Coolan t concentration s les s tha n
50 % ma y no t provid e sufficien t protectio n
agains t corrosio n o r freezing .
• Coolan t concentration s greate r tha n 60 % wil l
impai r coolin g efficienc y an d ar e no t recom -
mended .
CAUTION :
• D o no t mi x differen t brand s o f antifreeze/coolant .
• D o no t us e additiona l rus t inhibitor s o r anti-rus t
products ; the y ma y no t b e compatibl e wit h th e
recommende d coolant .
Engin e Coolan t
Refill Capacity : Includin g expansion
tank 2. 1 (2. 2 U S qt , 1. 8 Im p qt )
Manual : 12. 0 (12. 7 U S qt , 10. 6 Im p qt )
Automatic : 12. 0 (12. 7 U S qt , 10. 6 Im p qt )
FRON T ENGIN E DRAI N BOL T9.8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
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