Fuel Pressure: Testing and Inspection

- Relieve fuel pressure.
- Separate air cleaner assembly from throttle body and shift its position.
- Disconnect fuel feed hose from throttle body and fuel feed pipe.

CAUTION: A small amount of fuel may be released after fuel line is disconnected. In order to reduce chance of personal injury, cover fitting to be disconnected with a shop cloth. Place that cloth in an approved container when disconnection is completed.





- Connect special tools and hose between throttle body and fuel feed pipe as shown in figure, and clamp hoses securely to ensure no leaks occur during checking.
Special Tool
(A): 09912 - 58441
(B): 09912 - 58431
(C): 09912 - 58490
(D): 09356 - 75147 - 6000 (spare part)
- Install air cleaner assembly to throttle body and cylinder head cover.
- Start engine and warm it up to normal operating temperature.

If engine doesn't start, turn ignition switch ON to operate fuel pump and after 2 seconds turn it OFF. Repeat this 3 or 4 times and then check fuel pressure.
NOTE: Check that battery voltage is 11V or more before operating fuel pump.





- Measure fuel pressure under each of the following conditions. If measured pressure doesn't satisfy specification, refer to "Diagnostic Flow Chart B-3", shown below, and check each possibly defective part. Replace if found defective.







DIAGNOSTIC FLOW CHART B-3

- Relieve fuel pressure.
- Remove fuel pressure gauge, hose & 3-way joint after removing air cleaner assembly.
- Connect fuel feed hose to throttle body and clamp it securely.
- Install air cleaner assembly.
- With engine "OFF" and ignition switch "ON", check for fuel leaks.