3B2-06103-2 Nissan COIL PLATE ASSY (WITH ALTERNATOR)

Fuel System Inspection
A problem with the components that send fuel to the engine can cause low fuel pressure. This can decrease engine performance. To inspect the fuel system, follow this procedure:
Check the fuel level in the fuel tank. Inspect the fuel tank cap. Make sure that the vent is not filled with dirt.
Check the fuel lines for fuel leakage. Make sure that none of the fuel lines have a restriction or a defective bend.
Install a new fuel filter. Clean the primary fuel filter.
Remove any air that may be in the fuel system.If there is air in the fuel system, use the priming pump to move fuel through the low pressure part of the system. Fuel that contains air will return to the tank through the fuel return line.When you are removing the air from the fuel injection lines, use the following procedure:
Loosen the fuel line nuts at the fuel injector nozzle by 1/2 turn.
Crank the engine with the starting motor until fuel without air flows from the fuel line connections.
Tighten the fuel line nuts.Note: The fuel priming pump will not provide enough pressure for pushing fuel through the orificed reverse flow check valves in the fuel injection pumps.Fuel Transfer Pump
When the engine is operating at full load speed, the fuel transfer pump moves fuel through the secondary filter and the fuel injection pump housing at approximately 240 kPa (35 psi).To check the fuel transfer pump pressure, disconnect the fuel line from the filter at the fuel injection pump housing inlet. Install a tee at the inlet and connect the fuel line to the tee. Connect a pressure gauge to the tee and start the engine.Minimum fuel pressure must be 70 kPa (10 psi) of pressure at low idle. Minimum fuel pressure must be 170 kPa (25 psi) at full load speed with the engine under full load.If the fuel pressure is not above the minimum specifications, stop the engine. Replace the primary fuel filter and the secondary fuel filter. Check the fuel lines and the hoses for damage or plugging.Start the engine and again check the fuel pressure. If the fuel pressure is not above the minimum specification, a repair or replacement of the fuel transfer pump is needed.Checking Engine Cylinders Separately
If any of the following conditions occur, check the individual engine cylinders:
The engine runs rough.
The engine misfires.
The exhaust system blows out black smoke.Use this procedure to check the engine cylinders separately:
Run the engine at the roughest speed.
The fuel injection nozzles can be permanently damaged by twisting if only one wrench is used to loosen or tighten the fuel line nuts.Use one wrench to hold the nozzle and another to loosen the nut.
Loosen the fuel line nut at a fuel injection pump. This will stop the flow of fuel to that engine cylinder.After shutting off the fuel to the cylinder, the engine's performance should be rougher.
Tighten the fuel line nut.
Repeat Step 1 through Step 3 with each engine cylinder in sequence until you discover a loosened fuel line that does NOT affect the engine's performance.
When you find the engine cylinder that does NOT affect the engine's performance, perform the following operations:
Test the fuel injection pump for that cylinder.
Test the fuel injection nozzle.When an engine runs at low idle rpm, the temperature of an exhaust manifold can indicate the condition of a fuel injection nozzle. A low temperature indicates that no fuel is reaching the cylinder. This can possibly signify that the fuel injection nozzle has a defect.When an engine runs at low idle rpm and the temperature of an exhaust manifold is at an extra high temperature, too much fuel is probably flowing into the engine cylinder. This can also signify that the fuel injection nozzle has a defect.The most common defects on fuel injection nozzles include the following defects:
Plugging or blocking by carbon on the tip of an fuel injector nozzle
Orifice wear due to abrasive particles in the fuel
Wear from a wire brush on the nozzle's tipTesting Fuel Injector Nozzles
Table 1
Required Tools    
Part Number     Part Name     Qty    
5P-4150     Nozzle Tester Group     1    
5P-4244     Adapter     1    
8S-2270     Fuel Collector     1    
FT-1384     Extension     1    
8S-2245     Injector Cleaning Tool Group     1    
8S-2258     Brass Wire Brush     1    
6V-4979     Carbon Seal Installation Tool     1    
6V-6194     Needle Nose Pliers     1    
6V-4980     Torque Driver     1    
FT-1743     Line Assembly     1    
6V-6088
or
6V-6087     Calibration Fluid
19 L (5.0 US gal)
or
Calibration Fluid
208 L (55.0 US gal)     1    Note: Refer to Special Instruction, SEHS7292, "Using the 5P-4150 Nozzle Testing Group " for more information.
Illustration 1 g00557100
5P-4150 Nozzle Testing Group (1) Nozzle assembly (A) FT-1743 (B) 5P-4244 (C)