What If The Equipment Does Not Fire?

Equipment that does not fire is a very headache for car owners, but also we often encounter auto repair problems. So, if the equipment does not fire how to repair it?

Test Battery

In all normal engine conditions, the starter or battery failure will make the engine difficult to start, or even can not start.

In such cases, the first step is to understand the use of the starter and battery in order to determine the general fault area.

Failure Phenomenon Analysis

Engine starts only to hear the starter electromagnetic switch "cluck" sound, or the first start when the starter drives the crankshaft slowly turn a few times, followed by the starter electromagnetic switch "cluck" sound, but the crankshaft is not spinning. This phenomenon generally belongs to the battery "broken frame" failure.

Temporary parking can start each time, but the parking time is longer, or the next day when the start can only make the crankshaft turn a little. This phenomenon belongs to the battery self-discharge is serious, its pole plate, and partition plate seriously aging, and the battery is close to the end of life.

When starting, the starter suddenly rotates weakly and is accompanied by a burning rubber smell or smoke at the battery, mostly belonging to the pole pile, poor contact with the pole pile clamps, and heat burn damage.

Troubleshooting

The battery should be tested, it must be clear that the engine can not start is not caused of the battery power shortage.

Also check whether the battery grounding terminals are in good contact, if the wiring clamps are seriously defiled, you can use an iron brush to brush out the accumulated dirt on the terminals. Also, available sandpaper along the inner wall rubbing, grinding off the dirt.

Detection of Start-Up Systems

The equipment engine uses an electric motor as the starting power. The basic composition of the starting system consists of the battery, ignition switch, starting relay, starter, and so on.

The function of the starting system is to convert the electrical energy of the battery into mechanical energy through the starter and start the engine running.

Failure Phenomenon Analysis

If the starter drive gear and the engine flywheel gear ring when starting the idle sound of impact, the reasons are two.

The first is the deformation of the engagement tangent surface of the flywheel gear ring; the second is the gap between the starter drive gear and the flywheel gear ring is too large. The two can not be engaged, the engine can not start. Once the power switch is turned on, the starter drive gear and flywheel gear ring are engaged in rotation together. This fault occurs, one is the starter solenoid switch holding coil is wrongly connected to the power terminal.

The second is the key switch on the three wires connected to the wrong, judgment is the key in the "0" position when the starter drive gear does not turn, in the "2" position when the starter motor drive gear and flywheel gear ring engagement together to turn.

Start switch to the start position engine can not start, and no other phenomena. This fault is the key, the switch is not connected to the start circuit due to wear; second, the starter relay is not connected to the starter electromagnetic switch circuit; third the power switch is not connected to the main circuit.

Use a screwdriver to short the starter tail, you can turn on the starter circuit so that the engine starts.

Test the starting system. Generally speaking, the starting system's circuit includes the following basic parts: the battery, the starter motor, and the cables connecting these parts.

In addition, the ignition switch, starter relay, and solenoid coil, as well as the car anti-theft system, are also important parts of the starting system. They are also important parts of the starter system. Failure of these parts will lead to difficulty in starting the engine or the engine cannot be started. Therefore, when they fail, new parts should be replaced in time. The cost of ignition switch replacement and starter relay etc. is acceptable.

Testing Ignition Timing Testing Spark Quality

Ignition timing is not correct, combustion conditions change, and power loss and speed fluctuation are large. A high vacuum is not formed and causes unstable idle speed and weak acceleration. Severe will also lead to the engine can not start.

Failure Phenomenon Analysis

Testing the spark quality: When the circuit of the starting system passes the test and proves that there is indeed no fault, attention should be focused on why the engine is not running.

Generally speaking, the first test is the engine's ignition system, which is also one of the easiest to perform.

In early ignition systems, you can easily remove the ignition coil and use a spark detector to test for a proper electrical spark.

When choosing a spark detector, an adjustable detector is preferable to a fixed design because it allows you to adjust the detector to a smaller gap so you can tell if there is no spark at all, or if there is a spark but it is very weak.

Testing Ignition Timing: A slipping timing belt is the root cause of the fault that no electrical spark is generated and the engine won't start.