1.6l 4-cyl - VIN [p] Nissan Pulsar N13

ENGINE IDENTIFICATION

Note. For engine repair procedures not covered in this article, see ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION article in the GENERAL INFORMATION section.

The 4th character of the Vehicle Identification Number (VIN) designates engine model. The VIN is located on driver's side dash and visible through windshield.

ENGINE IDENTIFICATION CODES

Removal & Installation

1. Match mark hood and remove hood. Disconnect battery and remove. Drain cooling system. Remove accessory drive belts. Remove front tires and under engine covers. Leave brake hoses attached and remove brake caliper. Disconnect lower ball joint and tie rod from steering knuckle. Mark and remove steering knuckle-to-strut bolts. Pry axle shaft out of transaxle. Repeat procedure for other side.
2. Remove transaxle support rod bolt and remove center crossmember. Remove inlet pipe from exhaust manifold. Mark and disconnect front buffer rod. On M/T models, mark and remove rear buffer rod. Remove air cleaner assembly. Mark and disconnect electrical connectors, wire harness and vacuum hoses as necessary.
3. Raise engine slightly and remove remaining engine mounts. Lift engine and transaxle out of vehicle. To install, reverse removal procedure. When installing front and rear buffer rods, adjust length between bolts. (Scheme 1) Ensure all engine mounts are installed to original location and position.

Scheme 1

Removal and installation procedure is not available from manufacturer. (Scheme 2)

Removal and installation procedure is not available from manufacturer. (Scheme 2)

Scheme 2

CYLINDER HEAD

Removal

1. Place crankshaft on TDC of compression stroke. Ensure timing marks are aligned. Remove the timing belt. See «TIMING BELT»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p__timing-belt). Remove camshaft sprocket and inner front cover. Remove exhaust manifold, air cleaner assembly and valve cover.
2. Mark distributor-to-cylinder head and remove distributor assembly. Loosen cylinder head bolts in sequence evenly in 2 or 3 steps. (Scheme 3) Cylinder head bolts are of different lengths and must be installed to original position. Mark head bolts prior to removal. Remove cylinder head with intake manifold attached.

Scheme 3

Inspection

1. Thoroughly clean gasket mating surfaces. Check cylinder head for warpage. If not within specifications, machine or replace as necessary. See «ENGINE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) tables.
2. Machining limit of cylinder head is determined by total for both cylinder block and cylinder head. Maximum machine limit of cylinder head and/or cylinder block combined, must not exceed .008" (.20 mm). After machining, rotate camshaft by hand. If resistance is felt, replace cylinder head assembly.

Scheme 4

Installation

Install new head gasket. Install washers on cylinder head bolts. Position head bolts to original position. (Scheme 4) Tighten cylinder head bolts in sequence to specifications. See TORQUE SPECIFICATIONS table. To complete installation, reverse removal procedure. Adjust valves and set timing. See VALVE CLEARANCE ADJUSTMENT.

Scheme 5

TIMING BELT

1. Place crankshaft on TDC of compression stroke. Remove spark plugs. Remove right front under engine cover and splash cover. Remove accessory belts. Remove water pump pulley and crankshaft pulley. Support engine with a jack under oil pan.
2. Remove right side engine mount. Remove upper and lower timing belt cover. Check timing mark alignment. (Scheme 6) Mark timing belt with operating rotation for installation reference. Loosen timing belt tensioner and retain tensioner away from timing belt. Remove timing belt. Remove tensioner and spring (if necessary). (Scheme 5)

Scheme 6

1. Ensure camshaft and crankshaft sprocket timing marks are aligned at TDC on compression stroke. (Scheme 6) Install timing belt tensioner so no tension will be applied to belt during installation (if removed). If installing removed belt, properly position operating rotation mark made at removal.
2. Install timing belt, keeping belt tight on jackshaft and camshaft sprockets side. Loosen tensioner and allow tension to be applied to timing belt. Rotate camshaft sprocket 20 degrees (2 cogs) clockwise. Using a screwdriver, prevent tensioner from turning and tighten tensioner lock nut. Recheck timing mark alignment. Ensure ignition rotor is firing No. 1 cylinder. To complete installation, reverse removal procedure.

1. Remove timing belt as previously described. Remove oil pan if removing lower front engine cover. If removing upper front engine cover, remove camshaft sprocket and remove front cover. If removing lower front engine cover, remove all sprockets and remove upper and lower cover. (Scheme 7)
2. If removing front cover oil seals, front covers DO NOT need to be removed. Remove sprocket to gain access to oil seal being serviced. Pry seal out, using care not to damage surfaces. Apply engine oil to seal lip. Ensure seal is positioned properly and install seal. To complete installation, reverse removal procedure.

CAMSHAFT

Note. No in-vehicle service available from manufacturer.

Remove cylinder head assembly as previously described. Remove camshaft sprocket and upper engine front cover. Keeping rocker arm shaft components in order of removal, loosen rocker arm shaft bolts evenly in 2 or 3 steps. Remove rocker arm shaft assembly. (Scheme 7) Remove camshaft out front of cylinder head. Oil camshaft thoroughly prior to installation. To complete installation, reverse removal procedure.

Check camshaft for wear. Check camshaft journal-to-bearing clearance. If camshaft is not within specifications, replace camshaft and/or cylinder head as necessary. See ENGINE SPECIFICATIONS tables.

Scheme 7

VALVE ARRANGEMENT

Intake Side - Intake Valves

Exhaust Side - Exhaust Valves

1. Remove air cleaner assembly. Mark and remove spark plug wires. Mark and disconnect vacuum hoses from valve cover. Remove valve cover and gasket. Mark location of rocker arm shaft retaining bolt and clips for installation reference. NOTE: Replace front and rear rocker arm shaft bolt stopper after removing.
2. Evenly and in 2 or 3 steps, remove rocker arm shaft retaining bolts and clips. Remove rocker arm shaft assembly. To install, loosen rocker arm adjusting nut. Position rocker arm shaft and install bolts and clips in original location. To complete installation, reverse removal procedure.

VALVE CLEARANCE ADJUSTMENT

Rotate crankshaft and position No. 1 cylinder at TDC on compression stroke. Check and adjust valve clearance as necessary. See VALVE CLEARANCE SPECIFICATIONS table. Adjust valve clearance on No. 1 cylinder intake and exhaust, No. 2 intake and No. 3 exhaust. Rotate crankshaft 360 degrees. No. 4 cylinder should be at TDC on compression stroke. Adjust valve clearance on No. 2 cylinder exhaust, No. 3 intake and No. 4 intake and exhaust.

VALVE CLEARANCE SPECIFICATIONS

VALVE SPRINGS & SEALS SERVICE

Note. Seals and springs may be replaced in vehicle. Use compressed air, injected into cylinder, to hold valves closed.

Apply engine oil to new valve seal. Ensure valve spring seat is installed prior to installing valve seal. Use Valve Seal Installer (KV10107501) and Attachment (KV10109100) to install valve seal. Check valve springs and replace as necessary. See ENGINE SPECIFICATIONS tables. Springs should be installed with narrow spring pitch downward.

VALVES SERVICE

Note. No in-vehicle servicing procedures available from the manufacturer. Procedures given are with cylinder head removed.

Check valves for wear. Machine or replace as necessary. See ENGINE SPECIFICATIONS tables.

1. Heat cylinder head to 302-320°F (150-160°C). Using a hammer and drift, drive guide out through top of cylinder head. Allow cylinder head to cool to room temperature. Ream valve guide bore for service guide to.4803-.4807" (12.200-12.210 mm). Heat cylinder head to 302-320°F (150-160°C).
2. Press new guide into guide bore. Installed valve guide must protrude top of guide bore.579-.602" (14.71-15.30 mm). (Scheme 8) Allow cylinder head to cool to room temperature. Ream valve guide to achieve clearance specifications. See «ENGINE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) tables.

Scheme 8

1. Repair valve guides prior to valve seat servicing or replacing. Bore valve guide seat until it collapses and remove seat. Ream valve seat bore for .020" (.51 mm) oversize seat. See «VALVE SEAT REPLACEMENT BORE»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) table in this article.
2. Heat cylinder head to 302-320°F (150-160°C). Press seat in until fully seated on bottom. Machine valve seat. On intake seats a 3 angle cut is used and on exhaust seats a 2 angle cut is used. See ENGINE SPECIFICATIONS table at end of this article. After machining, lap valve seat with lapping compound.

VALVE SEAT REPLACEMENT BORE

Scheme 9

1. Check cylinder head gasket surface for warpage. See «ENGINE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) tables. Machining limit of cylinder block is determined by total for both cylinder head and cylinder block. Maximum machining limit of cylinder head and/or cylinder block combined, must not exceed .008" (.20 mm). Check block height from crankshaft journal center to top of cylinder block.
2. Check cylinder bore and machine as necessary. See «ENGINE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) tables. If machining is necessary, machine all cylinders the same and main bearing caps must be installed during all machining. Refinish cylinder bore to proper piston fit.

Information not available from manufacturer. Jackshaft drives oil pump through rotation by the timing belt. (Scheme 9)

Check jackshaft and bearing clearance. Check jackshaft end play with jackshaft unloaded. If not within specifications, replace as necessary. See ENGINE SPECIFICATIONS tables.

Remove under engine cover and drain oil. Remove right front splash cover and center crossmember. Remove inlet pipe from exhaust manifold. Remove front buffer rod and bracket. (Scheme 1) Remove engine gussets. Remove oil pan retaining bolts. Use Seal Cutter (KV10111100) to cut and separate oil pan and cylinder block. DO NOT use screwdriver.

Clean all gasket sealing surfaces. Apply a continuous bead of liquid gasket to oil pan. Liquid gasket must be .138-.177" (3.51-4.50 mm) wide. Place liquid gasket in groove and inner side of bolt holes. To complete installation, reverse removal procedure. DO NOT add oil or start engine for at least 30 minutes after oil pan installation.

Ensure notch or mark on piston is installed toward front of engine. Oil hole in rod should be on same side as cylinder number identification. (Scheme 10) Check piston-to-rod, piston-to-rings and piston-to-cylinder bore. Replace as necessary. See ENGINE SPECIFICATIONS tables. Ensure piston is installed in matching cylinder.

Scheme 10

FITTING RINGS

Check end gap of rings in cylinder bore prior to installing on piston. With proper end gap achieved, install rings on piston and properly position ends. (Scheme 11) Ensure ring-to-piston side clearance is within specifications. See ENGINE SPECIFICATIONS.

Scheme 11

Piston pin is press fit into connecting rod. Piston pin should move smoothly through piston at room temperature, with finger pressure. When installed, pin and rod should be centered in piston. Apply engine oil to piston pin and connecting rod bore to ease in installation. Ensure piston swings smoothly after installation.

1. Ensure main bearing caps are marked to ensure reassembly to original location and position. Note front and rear lower main bearings are grooved, Nos. 2 and 4 main bearings are not grooved and No. 3 main bearing is thrust bearing. DO NOT mix or interchange bearings. (Scheme 12)
2. Upper and lower main bearings are not interchangeable. Use Plastigage method for proper clearance and replace as necessary. See «ENGINE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) tables. Tighten main bearing caps evenly in 2 or 3 steps, in sequence to the proper specifications. (Scheme 12) See «TORQUE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#16l-4-cyl-vin-p) table.

Scheme 12

THRUST BEARING SERVICE

Crankshaft end play is achieved through No. 3 center bearing (thrust bearing). If end play is not within specifications, disassemble and check surfaces. Replace as necessary. See ENGINE SPECIFICATIONS tables.

Use Plastigage method to achieve proper rod bearing clearance. Tighten connecting rod bearing caps evenly to specifications. Check connecting rod side clearance. If not within specifications, replace rod and/or crankshaft. See ENGINE SPECIFICATIONS tables.

Remove transaxle, flywheel/flex plate. Oil seal retainer does not need to be removed unless replacing retainer gasket. Pry out oil seal, using care not to damage sealing surface. To install, oil seal lip and reverse removal procedure.

CRANKCASE CAPACITY

Oil capacity is 3.0 qts. (2.8L) without filter and 3.4 qts. (3.2L) with filter change.

NORMAL OIL PRESSURE

Oil pressure is greater than 18 psi (1.3 kg/cm 2 ) at idle and 53-75 psi (3.7-5.3 kg/cm 2 ) at 3000 RPM.

OIL PRESSURE RELIEF VALVE

Relief valve is nonadjustable and is located in the oil pump cover.

Remove oil filter and alternator, if necessary to gain access. Remove bolts retaining oil pump to cylinder block. Remove oil pump assembly. To install, apply engine oil to inner and outer rotors and reverse removal procedure.

Check clearances of oil pump gears and housing/body. See OIL PUMP SPECIFICATIONS table. If not within specifications, replace gear set or oil pump assembly.

OIL PUMP SPECIFICATIONS

Information not available from manufacturer. (Scheme 2) Water pump cannot be disassembled. Replace as an assembly.

Note. For further information on cooling systems, see ENGINE COOLING section.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

GENERAL ENGINE SPECIFICATIONS

GENERAL SPECIFICATIONS

VALVE SPECIFICATIONS

VALVE SPECIFICATIONS

PISTON/PIN/RING SPECIFICATIONS

PISTONS, PINS, & RINGS SPECIFICATIONS

MAIN & ROD BEARING SPECIFICATIONS

MAIN & ROD BEARINGS SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

VALVE SPRING SPECIFICATIONS

VALVE SPRING SPECIFICATIONS

CYLINDER BLOCK SPECIFICATIONS

CYLINDER BLOCK SPECIFICATIONS

CYLINDER HEAD SPECIFICATIONS

CYLINDER HEAD SPECIFICATIONS

JACKSHAFT SPECIFICATIONS

JACKSHAFT SPECIFICATIONS

See also:
• ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION
• TIMING BELT
• ENGINE SPECIFICATIONS
• VALVE CLEARANCE ADJUSTMENT