Engines of the VAZ-2110-2112 family have the same design and troubleshooting methods. The process of assembling, disassembling and repairing is quite accessible for a motorist with experience and experience in repairing domestic cars. Most repairs require only a standard set of tools and detailed instructions on how to work on the engine.
It is necessary
- - standard set of tools;
- - tester (multimeter);
- - spare parts
Instructions
Step 1
If the starter does not turn the crankshaft when the engine is started, check the voltage at the terminals and the residual capacity of the battery. If the battery is discharged, crimp the terminals, clean its contacts and grease them with petroleum jelly, charge the battery with low current. Replace it if necessary. Also check the ease of turning the crankshaft and the alternator and water pump pulleys. Replace defective parts with new ones. Inspect the starter clutch gears and flywheel ring teeth. If they are worn out, install a new starter or flywheel.
Step 2
If all this does not help, check the serviceability of the starter traction relay, ring with a tester and measure the resistance in the section of the circuit between the battery and the starter. Replace defective wires and traction relay. Check the operation of the starter, its manifold, brushes, armature, retaining windings and freewheel.
Step 3
If a strong extraneous noise is heard during the operation of the starter, check the fastening of the starter itself, the magnet inside it, the wear of the bushings and shaft journals. Also check the flywheel ring teeth for wear. If necessary, secure the starter and magnet inside it properly or replace these parts. Replace the complete flywheel with worn teeth.
Step 4
If the starter is working properly, but the engine does not start, check the battery performance as indicated above. Ring the circuit from the battery to the switch. Use a voltmeter to make sure the Hall sensor is working properly. Then try replacing the switch with a known good one to make sure it is not the cause of the failure. If this does not help, check the high-voltage wires for an open circuit, measure the resistance of the resistor, inspect the rotor and the distributor cover for burnouts. Then check the correct connection of the high voltage wires to the module or ignition coil. Then check that the spark plug gap is normal.
Step 5
Check the alignment of the marks on the crankshaft and on the camshaft to make sure that the valve timing is correct. Adjust the ignition timing. Then, in sequence, diagnose the engine control unit, crankshaft position sensor, coolant temperature sensor, idle speed regulator. Check the power system: the presence of gasoline in the tank, clogged filters, hoses and lines, the operation of the fuel pump. In a carburetor engine, check that the carburetor is working properly.
Step 6
If the engine is difficult to start, check the gasoline pressure generated by the fuel pump. Also check the entire power system as previously indicated. Make sure no gasoline leaks anywhere. Try to start the carburetor engine by pumping gasoline into the float chamber using a manual priming pump.
Step 7
In case of unstable engine operation, check the condition of the spark plugs and the condition of the gap between their electrodes. Check high-voltage wires, correct valve timing and ignition timing. Also make sure the commutator, engine control unit, crankshaft position sensor and idle speed regulator are in good working order. On carburetor engines, check the operation of the carburetor, clogging of its nozzles, serviceability of the solenoid valve. Also, find out the tightness of the exhaust system and check the oxygen sensor.
