Isuzu Engine 4jb1 Repair Manual Pdf

• SERVICE INFORMATION 00 – 3 1. HARD STARTING 1. STARTER INOPERATIVE Checkpoint Possible cause Correction Battery Loose battery cable terminal poor Clean and/or retighten the battery connections due to rusting cable terminal Battery discharged or weak Recharge or replace the battery Fan belt loose or broken Adjust or replace the fan belt Fusible link.

This is a very comprehensive manual (DOWNLOAD in PDF format) for ISUZU 4JB1 4JB1T 4JB1TC 4JG2 ENGINE, Features detailed exploded views. This is the same. Isuzu 4JA1 4JB1 4JB1T 4JB1TC 4J Series Diesel Engine Workshop Service Repair Manual Download Here you will find the most practical Service Repair Manual for the Isuzu 4JA1 4JB1 4JB1T 4JB1TC 4J Series Diesel Engine Workshop Service Repair Manual Download ever compiled by mankind.

• 00 – 4 SERVICE INFORMATION 3. ENGINE TURNS OVER BUT DOES NOT START Checkpoint Possible cause Correction Engine stop Defective fuel cut solenoid valve Replace the fuel cut solenoid valve mechanism FUEL IS NOT BEING DELIVERED TO THE INJECTION PUMP Fuel Fuel tank is empty Fill the fuel tank. • SERVICE INFORMATION 00 – 5 4.

QUICK-ON START SYSTEM PREPARATION 1 Disconnect the thermoswitch connector. Determine whether or not the glow plugs are receiving power.

A) Make sure that the starter switch is “OFF”. B) Connect a voltmeter between one of the glow plugs and the cylinder wall.

Rangkaian dan perhitungan thermistor dan lm3914. C) Move the starter switch to the “ON”. • 00 – 6 SERVICE INFORMATION GLOW PLUGS ARE NOT RECEIVING POWER (Cont’d) Checkpoint Possible cause Correction Glow plug indicator Defective glow plug relay Replace the glow plug relay light turns on for 3.5 The glow plug relay does not turn on after the seconds starter switch is moved from the “OFF”.

• SERVICE INFORMATION 00 – 7 Checkpoint Possible cause Correction Injection pump Injection timing improperly adjusted Adjust the injection timing (Cont’d) Insufficient injection volume Adjust the injection volume Defective idle spring Replace the idle spring Defective governor lever operation Repair or replace the governor lever Regulator valve improperly adjustment Adjust or replace the regulator valve Broken plunger spring. • 00 – 8 SERVICE INFORMATION Checkpoint Possible cause Correction Injection pump Defective regulating valve Repair or replace the regulating valve Defective delivery valve Replace the delivery valve Defective timer Repair or replace the timer Worn cam disc Replace the cam disc Improper control lever operation Adjust or replace the control lever Defective injection timing. • SERVICE INFORMATION 00 – 9 4. EXCESSIVE FUEL CONSUMPTION Checkpoint Possible cause Correction Fuel system Fuel leakage Repair or replace the fuel system related parts Air cleaner Clogged air cleaner element Clean or replace the air cleaner element Idling speed Poorly adjusted idling speed Adjust the idling speed Injection nozzle.

• 00 – 10 SERVICE INFORMATION 6. OVERHEATING Checkpoint Possible cause Correction Cooling water Insufficient cooling water Replenish the cooling water Fan clutch Oil leakage from the fan clutch Replace the fan clutch Fan belt Fan belt loose or cracked causing slippage Replace the fan belt Radiator Defective radiator cap or clogged radiator. • SERVICE INFORMATION 00 – 11 8.

DARK EXHAUST SMOKE Checkpoint Possible cause Correction Air cleaner Clogged air cleaner element Clean or replace the air cleaner element Injection nozzle Injection nozzle injection starting pressure Adjust or replace the injection nozzle too low Improper spray condition Fuel injection timing Fuel injection timing improperly adjusted. • 00 – 12 SERVICE INFORMATION 10. ABNORMAL ENGINE NOISE 1.