engine ACURA NSX 1997 Service Owner's Guide

Radiator

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.

DRAIN BOLTS

15 N-m (1.5 kgf-m, 11 Ibf-ft)
DRAIN HOLE
DRAIN PLUG

WASHERS

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Engine Coolan t Refillin g an d Bleedin g (cont'd )
Install rubbe r hose s o n th e drai n belt 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 if 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 .
Whe n th e coolan t stop s draining , tighte n th e
radiato r drai n plug , wate r pip e drain 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 . 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. Fil l th e expansio n tan k wit h Hond a Al l Seaso n
Antifreeze/Coolan t Typ e 2 . A s coolan t start s t o ru n
ou t i n a stead y strea m withou t bubbles , tighte n
the bleeder s in thi s sequence : therm o cove r blee d
bolt, radiato r blee d plug , heate r pip e bleed , an d
wate r pip e blee d bolt .
NOTE :
• Alway s us e Hond a Al l Seaso n Antifreeze /
Coolant Typ e 2 . Usin g a non-Hond a coolan t
can resul t i n corrosion , causin g th e coolin g
syste m to malfunctio n o r fail .
• Hond a Al l Seaso n Antifreeze/Coolan t Typ e 2 is
a mixtur e o f 50 % antifreez e an d 50 % water .
Premixin g i s no t required .
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 Refil l Capacity : Includin g expansio n
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 )
REA R ENGINE : DRAI N BOL T9.8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )FRON T ENGIN E DRAI N BOL T9.8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
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Radiator
10. Afte r tightenin g al l th e bleedin g bolt s and plug , fil l
th e expansio n tan k wit h coolan t u p t o th e MA X line .
11 . Loose n th e therm o cove r blee d bol t t o remov e an y
remainin g air .
12 . Whe n bleedin g i s completed , retighte n th e therm o
cove r blee d bol t an d fil l th e expansio n tan k u p t o
0. 5 (0.5 3 US qt , 0.4 4 Imp qt ) o r 3 0 m m (1. 2 in)
ove r th e MA X line . 1
3 . Instal l th e expansio n tan k cap , an d tur n it 6 0 degree s
(where i t engage s th e firs t loc k ta b o f fille r neck) .
14. Star t th e engine , an d le t i t ru n unti l warme d u p (unti l
th e thermosta t open s an d th e radiato r coolin g fa n
runs) .
15. Tur n of f th e engine . Chec k th e expansio n tan k and ,
i f needed , ad d coolan t t o brin g i t u p t o th e MA X
line.
16. Tighte n th e expansio n tan k ca p securely .
17 . Reinstal l th e cove r o n th e car' s underside .
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Under-hood Emission s Contro l Labe l
Emissio n Grou p Identificatio n
Engine an d Evaporativ e Familie s
50ST (5 0 States ) an d CANADIA N TIE R 1
THI S VEHICL E CONFORM S T O U.S . EP A NLE V an d
Canadia n Tie r 1 REGULATION S APPLICABL E T O 200 2
MODE L YEA R NE W LE V PASSENGE R CAR S AN D CALI -
FORNI A REGULATION S APPLICABL E T O 200 2 MODE L
YEA R NE W LE V PASSENGE R CARS .
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Engine Bloc k — Sectio n 7
Engin e Lubricatio n — Sectio n 8
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System Description

System Connectors [Engine Compartment (Right Side)]ProCarManuals.com

System Description

System Connectors [Engine Compartment (Left Side)] (cont'd)ProCarManuals.com

EngineEngine Removal/Installation5±1 . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Head/Valve Train6±1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Block7±1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Lubrication8±1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake Manifold/Exhaust System9±1 . . . . . . . . . . . . . . . . . . . .
Cooling10±1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Chassis and Paint Codes

Vehicle Identification Number
Transmission Number

Paint Code

Engine Number
Vehicle Identification Number

and Federal Motor Vehicle

Safety Standard Certification

Vehicle Identification Number and Canadian

Motor Vehicle Safety Standard Certification

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Identification Number Locations

VEHICLE IDENTIFICATION

NUMBER
VEHICLE IDENTIFICATION

NUMBER

ENGINE NUMBER

MANUAL TRANSMISSION

NUMBER
AUTOMATIC TRANSMISSION

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