1.8l 4-cyl 16-valve - VIN [c] 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.

Note. "Left" and "Right" refer to front and rear side of the engine, NOT the vehicle.

Engine identification number is located on left side of cylinder block near the No. 4 cylinder.

ENGINE IDENTIFICATION CODES

Removal

1. Drain cooling system. Remove all accessory drive belts. Raise and support vehicle. Remove front wheels and undertrays.
2. Remove front brake calipers and move aside. Disconnect lower suspension and steering rod ball joints. Remove steering spindle-to-strut bolts. Disconnect drive shafts from differential housing. NOTE: Engine and transaxle are removed as a single unit. Transaxle may be removed separately from beneath vehicle for independent service.
3. Remove transaxle support rod and front exhaust pipe section. Disconnect front and rear engine shock straps. Remove air filter and disconnect wiring, vacuum lines and coolant hoses.
4. Disconnect transaxle shift linkage and throttle control linkage. Lift engine slightly and remove or disengage all engine mounts. Note location of mount insulators. Remove engine using care not to damage brake lines and master cylinder during removal.

Installation

To install, reverse removal procedure. Ensure insulators are positioned on engine mounts.

1. Remove intake and exhaust manifolds. Remove timing belt. See «TIMING BELT»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c). Remove camshaft cover from cylinder head. CAUTION: DO NOT rotate camshafts or crankshaft with timing belt removed or valve damage may occur.
2. Remove breather/separator from top of cylinder head. Loosen cylinder head bolts in proper sequence. (Scheme 13) Note direction of washer installation on head bolts. Remove cylinder head. Remove camshafts if necessary. See «CAMSHAFT»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c).

Scheme 13

Inspection

1. Check cylinder head warpage and measure head thickness. (Scheme 14) Resurface head if not within the specification. See «CYLINDER HEAD & COMPONENT SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Determine camshaft oil clearance. Note letter, number and direction of arrow on center of bearing cap. Bearing caps contain a letter "I" or "E" to indicate installation on either intake or exhaust cam and position number.
3. Install camshaft bearing caps with arrow toward front of engine. Tighten bolts to 84-108 INCH lbs. (10-12 N.m). Measure camshaft bore diameters of cylinder head and camshaft journals. Determine oil clearance.
4. Replace components to obtain correct oil clearance. Measure lifter O.D and cylinder head bore I.D. Replace components if not within specification. See «CYLINDER HEAD & COMPONENT SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.

CYLINDER HEAD & COMPONENT SPECIFICATIONS

Scheme 14

1. Install camshafts, if removed. Ensure No. 1 cylinder is at TDC and camshaft sprockets are aligned with marks on rear timing cover. (Scheme 16) CAUTION: DO NOT rotate camshafts or crankshaft with timing belt removed or valve damage may occur.
2. Install cylinder head and new gasket. Install washers on head bolts with flat side toward cylinder head. Lubricate bolt threads and contact surface.
3. Tighten head bolts to specification in proper sequence. (Scheme 13) Install timing belt. Install remaining components. Tighten bolts to specification.

Scheme 15

Scheme 16

1. Drain cooling system. Remove upper radiator hose. Remove undertray from right side. Remove accessory drive belts. Remove water pump pulley.
2. Place reference mark on crank angle sensor and timing belt cover for reassembly reference. (Scheme 15) Remove crank angle sensor. Support engine and remove front engine mount support.
3. Remove upper timing belt cover. (Scheme 15) Align timing marks on camshaft sprockets. (Scheme 16) Remove right side inner fender panel. Remove crankshaft pulley and lower timing belt cover. Loosen tensioner pulley nut and release tension. Remove timing belt.
4. Using dial indicator, check camshaft sprocket runout. Replace sprocket if runout exceeds.004" (.10 mm). To remove camshaft sprocket, remove camshaft cover and hold hex area of camshaft. Remove sprocket retaining bolts. (Scheme 17)
5. Remove camshaft sprocket. If crankshaft sprocket requires removal, note the direction of sprocket plates prior to removal. (Scheme 15) Remove plates and sprocket.

Scheme 17

1. Inspect timing belt for wear on rounded edges of drive teeth.Inspect belt for signs of oil contamination. Replace belt if damaged or contaminated.
2. Check tensioner and idler pulleys for smooth rotation. Inspect tensioner pulley return spring for distortion or corrosion.

1. Install crankshaft sprocket and sprocket plates. Sprocket plates must be installed with flat side against crankshaft sprocket.
2. Ensure No. 1 cylinder is at TDC of compression stroke. Align camshaft and crankshaft sprockets. (Scheme 16) Install timing belt. Ensure 39 teeth exist between marks on camshaft sprockets and 48 teeth between crankshaft and camshaft sprockets. (Scheme 16)
3. Loosen tensioner pulley nut. Install crankshaft bolt and a spacer. Rotate crankshaft 2 revolutions. Tighten tensioner pulley nut to specification. Ensure all marks are aligned. Install timing belt covers.
4. Install crankshaft pulley and washer. Install engine mount. Install crank angle sensor and water pump pulley. Ensure reference marks on crank angle sensor are aligned. Tighten bolts to specification.
5. Install accessory drive belts. Install upper radiator hose and refill cooling system.

Removal & Installation

1. Remove crank angle sensor, upper timing belt cover and camshaft sprockets. See «TIMING BELT»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c). Remove rear timing belt cover. (Scheme 15)
2. Pry seals from housing. DO NOT damage seal surface. Note direction of seal installation. Lubricate seal and install with seal dust lip toward the front of engine. Install remaining components.

1. Remove timing belt and camshaft sprockets. See «TIMING BELT»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c). Remove tensioner pulley and rear timing belt cover. With camshaft installed, check camshaft end play. Replace camshaft or cylinder head if end play exceeds specification. See «CAMSHAFT & COMPONENT SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Note letter, number and direction of arrow on center of bearing cap. Bearing caps contain a letter "I" or "E" to indicate installation on either intake or exhaust cam and position number.
3. Remove camshaft bearing caps gradually in 2 or 3 steps using proper sequence. (Scheme 18) Remove front camshaft oil seals and camshafts. Remove valve lifters. Mark lifter for location and position in an upright position.

Scheme 18

1. Clean camshaft journals and cylinder head journal surfaces. Inspect journals for damage. Measure camshaft lobe height and journal diameter. Replace camshaft if not within specification. See «CAMSHAFT & COMPONENT SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Determine camshaft oil clearance. Install camshaft bearing caps with arrow toward front of engine. Ensure proper cap is installed on intake and exhaust side. Tighten bolts to 84-108 INCH lbs. (10-12 N.m). Measure camshaft bore diameters of cylinder head and camshaft journals.
3. Determine oil clearance. Replace components to obtain correct oil clearance. Measure lifter O.D and cylinder head bore I.D.

CAMSHAFT & COMPONENT SPECIFICATIONS

1. Exhaust side camshaft contains internal splines used to drive the crank angle sensor. Install camshafts with pin in proper location. (Scheme 19)
2. Ensure camshaft bearing caps are installed in correct position with arrow toward front of engine. Tighten camshaft bearing caps in proper sequence. (Scheme 18) Apply oil to seal lip. Install oil seal.

Scheme 19

VALVE ARRANGEMENT

Right Side: Intake valves.

Left Side: Exhaust valves.

VALVES SERVICE

Disassemble cylinder head. Measure valve stem diameter, valve margin and length. Replace valves not within specification. See VALVE SPECIFICATIONS table.

1. Bore out seat until it collapses and remove from cylinder head. Ensure machining does not contact cylinder head material.
2. Machine cylinder head to specifications for installation of replacement seat. Heat cylinder head to 302-320°F (150-160°C). Press seat into cylinder head. Grind seat to proper angle.

1. Heat cylinder head to 302-320°F (150-160°C). Remove valve guide. Ream cylinder head guide bore to specification. See «VALVE GUIDE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Heat cylinder head to 302-320°F (150-160°C). Press replacement guide into cylinder head. Ream valve guide to finished dimension.

VALVE GUIDE SPECIFICATIONS

Measure free length of valve springs. Check spring tension at specified height. Replace springs if not within specification. See VALVE SPRING SPECIFICATIONS table. Check valve spring for squareness. Replace spring if out-of-square exceeds .071" (1.80 mm).

VALVE CLEARANCE ADJUSTMENT

Valve clearance is not required as hydraulic valve lifters are used. If valve lifter can be depressed more than .040" (1.00 mm) by finger pressure, air should be bled from lifter. To bleed air, operate engine at 1000 RPM for 10 minutes. If noise exists, replace lifter. See CAMSHAFT .

Remove valve springs and valves. Using Puller (J-36467), remove valve stem oil seal. Coat seal with oil. Using Seal Driver (KV10107501), install oil seal.

1. Inspect cylinder block for cracks, warpage, cylinder bore taper and out-of-round and block height. Replace or repair cylinder block if not within specification. See «CYLINDER BLOCK SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Factory engines are assembled with cylinder block and pistons graded for dimensional tolerance. Cylinder grade is stamped on the top of block on the right side. Pistons are stamped on the top near front index mark. (Scheme 20) CAUTION: If cylinder block or piston is replaced, ensure grade number on piston and cylinder block are the same.
3. Measure cylinder bore and piston skirt diameter. Piston skirt diameter should be measured at 90 degree angle to piston pin. Measure at approximately.550" (13.97 mm) from bottom of piston skirt.
4. Clearance between piston and cylinder bore must be within specification. See «CYLINDER BLOCK SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. Repair or replace components to obtain correct clearance.

CYLINDER BLOCK SPECIFICATIONS

Scheme 20

1. Drain engine oil. Remove splash shields and undertray. Remove center support brace and front exhaust pipe. Remove front engine shock strap.
2. Remove engine mount plates to allow access to oil pan. Remove pan bolts. Using Seal Cutter (KV10111100) and hammer, tap cutter between pan and block to break seal. Remove oil pan.

Apply a .138-.177" (3.50-4.49 mm) wide bead of sealant in center of grooved area of oil pan. If mounting flange is flat, apply sealant between mounting bolt holes and inner edge of pan. Install oil pan. Tighten bolt to specification. Allow sealant to set for a minimum of 30 minutes before refilling oil.

1. Remove cylinder head. See «CYLINDER HEAD»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c). Remove oil pan. Ensure cylinder ridge is removed. Mark connecting rod and cap for cylinder identification.
2. Note direction of "Front" mark on piston, rod cap and connecting rod. (Scheme 20) Remove rod cap. Remove piston assembly.

1. Ensure piston ring end gap and side clearance are within specification. Install rings on piston with ring code marks toward top of piston. Lubricate piston, rings and cylinder bore with engine oil.
2. Properly space ring end gaps on piston. (Scheme 21) Install piston and rod into cylinder bore. Ensure piston is installed with "Front" mark toward front of engine. (Scheme 20)
3. Lubricate rod nuts with oil and install. Tighten rod cap nuts in 2 steps to specification. See «TORQUE SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. Ensure rod moves freely on crankshaft. Check connecting rod side play.

Scheme 21

FITTING PISTONS

Measure cylinder bore and piston skirt diameter. Piston skirt diameter should be measured at 90° angle to piston pin. Measure at approximately .550" (13.97 mm) from bottom of piston skirt. Clearance between piston and cylinder bore must be within specification. See PISTONS, PINS & RINGS table.

Note reference mark on top of piston and connecting rod. (Scheme 20) To disassemble piston and rod, heat piston to 140-158°F (60-70°C) and push out piston pin.

1. Inspect piston for cracks or damage in ring areas. Check ring side clearance. Replace piston if not within specification. See «PISTONS, PINS & RINGS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Note piston grade mark number on top of the piston. (Scheme 20) Measure piston skirt diameter at 90 degree angle to piston pin at approximately.550" (13.97 mm) from bottom of piston skirt. Replace piston if not within specification. See «PISTON & CONNECTING ROD SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
3. Measure piston pin O.D. and piston pin hole. Check connecting rod for bend or twist. Replace connecting rod if twist or bend exceeds.004" (.10 mm) per 3.94" (100.1 mm). Measure piston pin and crank pin I.D. Replace components if not within specification. See «PISTON & CONNECTING ROD SPECIFICATIONS»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.

PISTON & CONNECTING ROD SPECIFICATIONS

Position piston on connecting rod. Ensure "FRONT" mark is aligned with connecting rod cylinder number and oil hole. (Scheme 20) Lubricate all components with oil. To install, reverse removal procedure.

1. Remove timing belt, water pump and cylinder head. Remove oil pan and oil pump. Remove pistons. Remove rear sealplate.
2. Ensure main bearing caps are marked for location. Loosen main bearing caps bolts in proper sequence. (Scheme 22) Remove main bearing caps, crankshaft and bearings.

Scheme 22

Inspect crankshaft for cracks, damaged gear or threads. Check crankshaft for runout at center journal, out-of-round and taper. Repair or replace crankshaft if not within specification. See MAIN & ROD BEARINGS table.

Scheme 23

1. Factory production line engines use grade markings to control tolerances. Main bearing bores are graded (0-2) and are marked on bottom surface of cylinder block. Crankshaft grade is marked on the end of the front counterweight in accordance with rod and main bearing journal location. (Scheme 23)
2. Determine proper bearing grade number to be used according to crankshaft and cylinder block numbers. See «MAIN BEARING SELECTION»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. Bearings are color coded in accordance with grade. See «BEARING COLOR CODES»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. MAIN BEARING SELECTION Cyl. Block No. Crankshaft No. Bearing Number Used 0 0 0 1 0 1 2 0 2 0 1 1 1 1 2 2 1 3 0 2 2 1 2 3 2 2 4 BEARING COLOR CODES Grade Color Main Bearings 0 Black 1 Brown 2 Green 3 Yellow 4 Blue Rod Bearings 0 Black 1 Brown 2 Green
3. Install upper main bearings in cylinder block. Ensure oil hole is aligned and bearing is properly seated. Lubricate bearings with engine oil.
4. Install crankshaft in block. Install main bearing cap with location number toward front of engine. Move crankshaft forward and backwards to center thrust bearing. CAUTION: Main bearing cap must be installed in original location with location number facing toward the front of engine.
5. Tighten bearing cap bolts to specification in proper sequence using 2 steps. (Scheme 22) Ensure crankshaft rotates freely with main bearing cap installed. Check crankshaft end play. See «CRANKSHAFT END PLAY»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c__crankshaft-end-play).
6. Install connecting rod caps and bearings. Ensure components are installed in original location. Tighten to specification. Ensure connecting rods move freely on crankshaft.

1. Ensure bearing cap and connecting rod are marked for location. Remove connecting rod cap and bearing.
2. Note grade number stamped on connecting rod and crankshaft. (Scheme 20)and (Scheme 23). If crankshaft or connecting rod have been replaced, proper bearing must be selected.
3. Determine proper bearing grade number to be used according to connecting rod and crankshaft numbers. See «CONNECTING ROD BEARING SELECTION»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. Bearings are color coded in accordance with grade. See «BEARING COLOR CODES»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table. CONNECTING ROD BEARING SELECTION Connecting Rod No. Crankshaft No. Bearing Number Used 0 0 0 1 1 1 2 2 2
4. Install replacement bearing. Ensure rod cap is installed so number on cap is aligned with that of connecting rod. (Scheme 20) Lubricate threads of rod bolts and tighten to specification. Tighten nuts to specification. Ensure connecting rod moves freely on crankshaft. Check connecting rod side clearance.

CRANKSHAFT END PLAY

If not within specification, inspect thrust bearing and crankshaft. Replace components to obtain correct clearance.

Remove flywheel. Pry oil seal from seal retainer. Lubricate sealing lip of new seal and crankshaft flange. Install seal in seal retainer. Install flywheel. Tighten bolts to specification.

ENGINE LUBRICATION

Oil pressure is provided by a crescent-gear type pump. Pressure regulator valve is located in oil pump body. Pressure relief valve is located behind oil filter. Ball of pressure relief valve should slide when pressure is applied.

CRANKCASE CAPACITY

Crankcase capacity is 4 qts. (3.8L) with filter replacement.

NORMAL OIL PRESSURE

Oil pressure at idle should exceed 11 psi (.8 kg/cm 2 ) and be 67 psi (4.7 kg/cm 2 ) at 2000 RPM with engine at normal operating temperature.

Remove timing belt. See TIMING BELT . Remove lower support brace and oil pan. Remove oil pump bolts and remove oil pump.

Disassembly & Inspection

1. Disassemble pump. Note position and length of rear cover bolts. Disassemble pump. Using feeler gauge, check pump clearances. Replace gears and or pump assembly if not within specification. See «OIL PUMP CLEARANCE»(/nissan/pulsar/n13-1986-1990/remont/mechanical/#18l-4-cyl-16-valve-vin-c) table.
2. Coat pressure regulator valve with oil and install in pump body bore. Valve should slide freely in pump body. Replace components if valve does not slide freely.

OIL PUMP CLEARANCE

Reassembly & Installation

Apply engine oil to gears prior to installation. To reassemble pump, reverse disassembly procedure. To install pump, reverse removal procedure using new "O" ring. Tighten bolts to specification.

1. Drain coolant from block and radiator. Block drain plug is located at left rear of cylinder block. Remove drive belt and pulley. Remove water pump. CAUTION: Ensure coolant does not contact timing belt during water pump removal.
2. Replace water pump as a complete unit. To install, reverse removal procedure using new gasket. Tighten bolts to specification.

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

GENERAL ENGINE SPECIFICATIONS

GENERAL SPECIFICATIONS

VALVE SPECIFICATIONS

VALVE SPECIFICATIONS

PISTONS, PINS, & RINGS SPECIFICATIONS

PISTONS, PINS & RINGS SPECIFICATIONS

MAIN & ROD BEARINGS SPECIFICATIONS

MAIN & ROD BEARINGS SPECIFICATIONS

VALVE SPRING SPECIFICATIONS

VALVE SPRING SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

CAMSHAFT SPECIFICATIONS

VALVE TIMING SPECIFICATIONS

VALVE TIMING SPECIFICATIONS

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION
• TIMING BELT
• CRANKSHAFT END PLAY