TESTING AND ADJUSTING TESTING AND ADJUSTING FOR FUEL INJECTION TIMING TESTING AND ADJUSTING FOR FUEL INJECTION TIMING a Testing and adjusting instruments for fuel injec- tion timing (for delivery valve method) TESTING AND ADJUSTING BY MATCH MARK METHOD a After removing and installing the fuel injection pump without repairing it or when only checking the injection timing, test and adjust the injection timing according to the following procedure. 4. Remove cover (3) of the fuel injection pump drive shaft. TESTING 1. Open the engine hood and remove all cylinder head covers (1). 5.
Insert pin [1] in the mounting bolt hole of the front cover (on the outside of the engine) to check the fuel injection timing. a Use a pin 4.0 – 4.5 mm in diameter and about 80 mm in length. a If the pin enters smoothly to inside of the drive gear of the fuel injection pump, the fuel injection timing is normal. In this case, return the removed parts. a If the pin touches the drive gear of the fuel pump, the fuel injection timing is abnormal. In this case, adjust the fuel injection timing. 2. Remove the engine undercover (on the radiator side). 3. Rotate the crankshaft forward to bring the stamped "1.4TOP" line (a) of the crank pulley to pointer (2) and set the No.
1 cylinder to the com- pression top dead center. a Crank the crankshaft with the crank pulley mounting bolt. a There are 2 stamped "1.4TOP" lines on the crank pulley. Use the one at the diagonal position of "2.3TOP". a When the No. 1 cylinder is at the compres- sion top dead center, the rocker arm of the No. 1 cylinder can be moved by the valve clearance with the hand. If the rocker arm cannot be moved, the No. 1 cylinder is not at the compression top dead center. In this case, rotate the crankshaft one more turn. ADJUSTING a If the fuel injection timing is abnormal, adjust it according to the following procedure. 1. Remove the fuel pump, holder, and drive gear together.
a See DISASSEMBLY AND ASSEMBLY, Removal, installation of fuel pump assembly. 20-112 PC130-7 (1) Symbol Part No. Part name F 1 795-102-2103 Spring pusher 2 Commercially available Dial gauge