2008 nissan titan service manual




















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Diagnostic Procedures. Wiring Diagrams. Here is what you'll get. Step-by-step factory recommended repair instructions. Unlimited access to personal support reps who are always available to assist you. We can answer your questions about using the software or help you find the specific information you need for your Nissan Titan. Free real-time updates! Your manual is updated with revised information as soon as it is released.

Access on your terms. Unlimited access to your Nissan Titan manual on a yearly basis. Make sure the valve clearances for a cold engine are within specifications by referring to the specified values. After completing the repair, check the valve clearances again with the specifications for a warmed engine.

Make sure the values are within specifications. Warm up the engine thoroughly. EM Release the fuel pressure. Remove the spark plug from each cylinder. D Install the compression tester with Tool into the spark plug hole. When the gauge pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cylinder.

Check the engine speed again with normal battery gravity. After checking, measure the compression pressure again. Check the piston rings and replace if necessary. Check the valves for damage. Replace the valve or valve seat accordingly. Inspect and repair as required. Install the components in the reverse order of removal. Start the engine and confirm that it runs smoothly. Perform trouble diagnosis.

If DTC appears, erase it. Remove the engine room cover using power tool. Disconnect the harness connector from air cleaner case upper. Remove the air duct and resonator assembly and air cleaner case. Partially drain the engine coolant. Release the fuel pressure. Disconnect the fuel tube quick connector on the engine side. Tool number a. With the sleeve side of Tool facing quick connector, install Tool onto fuel tube.

Insert Tool into quick connector until sleeve contacts and goes no further. Hold the Tool in that position. Hold Tool where it contacts and goes no further. Draw and pull out quick connector straight from fuel tube. O-ring inside quick connector may be damaged. Remove or disconnect harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube from intake manifold.

Remove electric throttle control actuator by loosening bolts diagonally. Remove the fuel injectors and fuel tube assembly. Loosen the bolts in reverse order shown using power tool. Remove the intake manifold. Connecting Quick Connector of Fuel Tube Install quick connector as follows the steps are the same for quick connectors on both engine side and vehicle side except for the quick connector cap.

Make sure no foreign substances are deposited in and around tube and quick connector, and they are not damaged. Thinly apply new engine oil around the fuel tube from tip end to the spool end. Align center to insert quick connector straight into fuel tube.

Use a mirror to check this where it is not possible to view directly from the straight side, such as quick connector on vehicle side. Make sure it is completely engaged connected so that it does not come out from fuel tube. Install the quick connector cap on the quick connector joint on engine side only. Install the fuel hose and tube to hose clamps. Refill the engine coolant. Then check for fuel leaks at connections.

Drain the engine coolant from the radiator. Remove the engine undercover using power tool. Remove the radiator and radiator hoses. Remove the drive belts. Replace it with a new one. Remove the front cross bar. Remove the exhaust manifold LH following the steps below. Remove the exhaust front tube. Remove the exhaust manifold cover. Loosen the nuts in reverse order of illustration A using power tool. Remove the exhaust studs from positions 2, 4, 6, 8 and remove left exhaust manifold Remove the exhaust manifold RH following the steps below.

Remove the oil level gauge guide. Remove the exhaust studs from positions 2, 4, 6, 8 and remove right exhaust manifold. Installation is in the reverse order of removal. Then recheck the torque of the nuts both A and B. Doing so may cause damage to the sensor, resulting in the MIL coming on.

Remove the engine. Remove the oil pan lower using the following steps. Remove the oil pan lower bolts using power tool. Slide 1 the Tool by tapping 2 its side with a hammer to remove the lower oil pan from the upper oil pan.

Remove the oil strainer from the oil pan upper. Remove the oil pan upper using the following steps. Remove the oil pan upper bolts a shown. Remove the oil pan upper from the cylinder block by prying it at the points shown, using suitable tool.

Install the oil pan upper using the following steps. Apply liquid gasket thoroughly as shown. Tighten the bolts in numerical order as shown. Install the oil pan lower. Install the oil pan drain plug. Install engine assembly. Check engine oil level and add engine oil if necessary. Start the engine, and check for leaks of engine oil. Stop engine and wait for 10 minutes. Check engine oil level again.

Disconnect the harness connector from the ignition coil. Remove the ignition coil. Move the harness on the upper rocker cover and its peripheral aside. Remove the electric throttle control actuator, loosening the bolts diagonally for LH only. Remove the ignition coils.

Loosen the bolts in reverse order shown using power tool for rocker cover A or B. Apply liquid gasket to the joint part of the cylinder head and camshaft bracket following the steps below. Install the rocker cover A or B. Install the PCV hoses. Installation of the remaining components is in the reverse order of removal. Release fuel pressure. Disconnect fuel injector harness connectors. Disconnect fuel hose assembly from fuel tube RH bank and LH bank.

Remove fuel injectors with fuel tube assembly. Remove fuel injector from fuel tube. Spread open to remove clip. Remove fuel injector from the fuel tube by pulling straight out. Install fuel damper to each fuel tube. Apply engine oil to O-ring and set it into the cap of fuel tube. Never wear gloves. Also be careful not to twist or stretch O-ring. Make sure that backup spacer is in the O-ring connecting surface of fuel damper.

NOTE: Backup spacer is fuel damper assembly part. Insert fuel damper until it seats on fuel tube. Reference value. Install cap, and then tighten bolts evenly by turns. Install O-rings to fuel injector paying attention to the items below.

Standard model Fuel tube side Nozzle side. If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube. Do not angle or twist it. Install fuel injector to fuel tube. Insert clip into clip mounting groove on fuel injector. If interference occurs, replace O-ring. Insert fuel injector into fuel tube with clip attached. Make sure that installation is complete by checking that fuel injector does not rotate or come off.

Install fuel tube and fuel injector assembly to intake manifold. Install fuel hose assembly. Apply fuel pressure to fuel lines by turning ignition switch ON with engine stopped.

Start the engine and rev it up and check for fuel leaks at connections. The procedure for removing parts on the RH bank is omitted because it is the same as that for removal on the LH bank.

The procedure for installing parts on the LH bank is omitted because it is the same as that for installation on the RH bank. Remove the engine assembly from the vehicle. Cut the liquid gasket and remove the covers using Tool. Obtain compression TDC of No. Turn the crankshaft pulley clockwise to align the TDC identification notch without paint mark with the timing indicator on the front cover.

At this time, make sure both intake and exhaust cam lobes of No. Remove the crankshaft pulley. Loosen the crankshaft pulley bolts using a hammer handle to secure the crankshaft. Remove the crankshaft pulley from the crankshaft using tool. Set the bolts in the two bolt holes [M6 x 1. NOTE: The dimension between the centers of the two bolt holes is 61 mm 2.

Remove the front cover. Loosen and remove the bolts in the reverse of order shown. Remove the front oil seal using suitable tool. Remove the oil pump drive spacer. Remove the oil pump. Remove the chain tensioner on the LH bank using the following steps. The procedure for removing parts on the RH bank is omitted because it is the same as that for the LH bank. Squeeze the return-proof clip ends using suitable tool and push the plunger into the tensioner body. Secure the plunger using stopper pin.

Remove the bolts and chain tensioner. It may cause serious injuries. Secure it using stopper pin 3. Remove the timing chain tension guide and timing chain slack guide. Remove the timing chain and crankshaft sprocket.

Loosen the camshaft sprocket bolts as shown and remove the camshaft sprocket. Repeat the same procedure to remove the RH timing chain and associated parts. Replace chain if necessary. Make sure the crankshaft key and RH bank camshaft dowel pin and LH bank camshaft dowel pin are facing in the direction shown. Install the camshaft sprockets. Common part used for both banks. Install the crankshaft sprockets for both banks. NOTE: The same parts are used but facing directions are different.

Install the timing chains and associated parts. After the alignment marks are aligned, keep them aligned by holding them by hand. Make sure the tensioner is released.

In the same way as for the RH bank, install the timing chain and associated parts on the LH bank. Install the oil pump. Install the front oil seal using suitable tool. Install the chain tensioner cover. Apply liquid gasket as shown. Check again that the timing alignment marks on the timing chain and on each sprocket are aligned. Then install the front cover.

Install the bolts in the numerical order shown. After tightening, re-tighten to the specified torque. Apply liquid gasket D as shown. CAUTION: The start and end of the application of the liquid gasket should be crossed at a position that cannot be seen after attaching the Intake valve control solenoid valve cover.

Install the crankshaft pulley. Tighten the crankshaft pulley bolt. Apply engine oil onto the threaded parts of the bolt and seating area. Select the one most visible notch of the four on the bolt flange. Corresponding to the selected notch, put a alignment mark such as paint on the crankshaft pulley. Crankshaft pulley bolt torque Step 1 : Rotate the crankshaft pulley in normal direction clockwise when viewed from engine front to check for parts interference.

Installation of the remaining components is in the reverse of order of removal. If less than required quantity, fill to the specified level. With fuel pressure applied to fuel piping, check for fuel leakage at connection points. With engine speed increased, check again for fuel leakage at connection points. However, this is normal.



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