When the key is twisted or when the electric starter button is pressed, if the motorcycle does not react, or even hears a “single” or total silence, this is one of the failures common to motorcyclists. According to the 2025 data on a motorcycle repair platform, 80 per cent of such failures are “small problems” (e. G. Battery failure, bad switch exposure), usually only cost a few dozen dollars, while only 20 per cent of the failures require major repairs. This paper will provide a detailed analysis of the eight common causes of the non-responsible fire on motorcycles from the three core dimensions of the “wireway” “oil road” “mechanical”, along with “self-checking steps at home” and “maintenance cost reference”. In combination with the practical experience of a senior rider (e. G., the power loss of the battery is judged by a kick-starter, and the fire is more energy-efficient by a “squeezing” of the battery), you are taught to quickly locate through the “hearing” “watching” “touching line” and avoid being misdirected by a maintenance shop to replace the total (e. G., the fuse was damaged, but the engine was told that it needed to be overhauled). Whether you are driving a cross-cycling, pedal or retro-motor motorcycle, you can screen the motorcycle in accordance with the steps provided here, so that it can be quickly restarted and unnecessary maintenance costs avoided。
First, check the circuit first: 80% of the problem is here, from simple to complex
1. Most common: bottled or without electricity (40%)
The motorbike's electrical start-up is entirely reliant on a bottle to supply electricity, which, if it fails, does not react during the fire, or hears only a small “single” sound (the power of the starter is not strong). The self-checking method is simple:
Watch the instrument: the key door is open and the light is not on (or is dark, it is extinguished in seconds) and basically the battery is out of power; if the light is on, the light is suddenly out when the start-up key is pressed, it is also a loss of battery (low voltage)。
Kick-starter: if cross-cycling (with foot start-up poles), kick-starter can start a few times, and the start-up holster is back to normal, it means that the battery is running out of power (after start-up generator recharges the bottle so it can hold the car); if the pedal (with no foot start-up), it can only take out the power source for the test。
Common causes:
Forget to turn the lights off, turn the lights on, and run out of electric bottles (especially after a night out)
Aging of electric bottles (generally 2-3 years, polar sulfide, non-existent)
Generator failure (non-charged after start-up, less use of bottles)。
Maintenance methods:
(b) temporary emergency relief: a vehicle or other motorcycle (on jumper line, positive, negative, 10 minutes after start-up before charge), at a cost of $0 (on loan)
Long-term solution: if electrical failure results in a loss of power, electricity is available for continued use (4-6 hours charged by chargers); if the cylinder is ageing (after the day it is filled and the power is lost), the battery is replaced (150-200 for regular bottles and 250-300 for glue bottles); if the generator fails (after start-up recharge lights do not go off), the generator is repaired (50-100 for retrofitters and 200 for severe circuits)。
Old rider reeko's experience: "my honda cb 400 stopped for a week, forgot to turn off the light, and the bottle lost power. The motorbike of a friend is activated at a 20-minute low speed and then normally takes six months — as long as the battery is not aging, the power is still available after it is depleted.”
2. Collapse of fuses (15%)
There's a “general fuse” in the battery line (usually near the bottle, or in the header safe), and if the fuse breaks, the entire circuit will be out of power and the fire will not react. Self-checking steps:
Find the fuse box (cross-ride by the electric bottle, pedal under the seat, note marked)
Remove the "general insurance" (generally 15a or 20a, colour marked) to see if the metallic wire in the middle is broken (disconnected or melted)
Other fuses are checked for melting (e. G. Start-up of relay insurance), but the highest probability of total termination is found。
Common causes:
Short circuits (e. G., wire beams broken, plus or minus iron)
(b) excessive current at start-up (e. G., start-up of the power card)
The fuses are of poor quality and ageing breaks。
Maintenance methods:
Switching fuses to the same specification (not with large currents, such as 15a, 20a, burn lines) and, if they are replaced and broken, indicate short circuits, which need to be checked (see repair shop, $50-100)
If it's activated, it's an aging fuse, at a cost of $1。
Note: don't replace the fuse with copper wire! Copper wires do not melt, wire beams are set on short roads and even fires。
3. Start switch or relay failure (15%)
The failure to activate the switch (the start button on the right hand) or to activate the relay may also result in a failure of fire, characterized by " a light on the instrument, but no sound at all by pressing the start key " (the power is not moving)。
(b) checking the start switch: to remove the right hand from the shell (by twisting two screws with a screwdriver), and to activate the switch with two contact points with a short screwdriver (cautionally do not touch electricity), indicating that the switch is broken (oxidized)
Checking start-up relays: the relays are usually near the cylinders (with the "click" mark) and can hear the sound of the "twirl" (relay inhaler ads) when pressing the start-up key, indicating that the relays are fine; if there is no sound, the relays may be broken (wire burned) or the control line is broken。
Maintenance methods:
Start switch oxidation: grinding contact points with sandpaper or switching switches directly (20-50 yuan)
Relays are broken: same type relays (us$ 50-100, self-replacement, plugging)。
The old rider's pedal came across: "pushing the start button didn't work, thought the bottle was broken, and the relay hit black, and the sandpaper was polished
4. Other circuit problems (10 per cent)
Disconnect switch/side support switch failure: cross-cycling has a “disconnected safety switch” (which must be squeezed in order to set a fire and prevent the taped car from starting), and if the switch is broken (e. G., stuck), it does not work; and the side support switch (which cannot be fired if it does not work) is the same thing, and the switch is blocked so that it cannot be activated. Self-censor: squeeze + support, if not, two lines of short switches (temporary tests)。
Wire beams are loose: a positive negative pole pole oxidation (green copper rust) of a bottle, or a loose connection to the starter power cause power to be disrupted. Self-check: handshake the wire to see if it's loose and grind the pole with sandpaper。
Ii. Re-opening gas routes: powering without cars (others confused with circuit problems)
Some riders would say, “can hear the starter turn, but the engine doesn't have a car”, but it's a problem with the gas circuit (normal circuit, electrical turn, but no gas in the tank)。
1. No oil (most easily ignored)
The tanks were unoiled or were too low (not inhaled) and the motor turned normally on the start-up, but not in the car. Self-check:
Look at the oil table (open the tank cover if it's not right)
When the throttle starts, it doesn't smell gasoline (normally it smells slightly)。
Solutions: refuelling is sufficient, but care is taken that if the tank is completely empty, it may need to be hit several times after the oil has been added (to allow gasoline to enter the carburetor/nozzle)。
2. Oil-chemical/oil-jet plugging (common in pedals)
Long-term poor-quality gasoline, or long-term stopovers (more than a month), can be blocked by glue from the car (chemical oil truck) or from the nozzle (voltage truck), resulting in a lack of fuel, as shown by the fact that “the motor turns, but it is difficult to start or shut off when it is on board”。
Oil tankers: open the car and put oil screws to see if there is any petrol coming out of the car (free of oil is blocked); or remove the spark plug to see if it is dry (free of oil). Solved: poachers (self poachers, $50; maintenance stores, $80-100)。
Ejection vehicles: the instrument may light a “engine failure light” requiring a diagnostic device (usually oil-jet mouth plugging). Solved: fuel-added (temporary relief) with heavy need to remove oil-scaves (around $200 in maintenance stores)。
The old rider reminds: “don't add oil from private small gas stations, which is so easily clogged, and fill the tank before long-term parking (reducing air, which is not easy to produce).”
3. The spark plug is flooded (in cold days or as a result of frequent fire)
If the start button is pressed frequently (not successfully), there will be too much gasoline entering the cylinder and the spark plug will be “drowning” (the electrodes are humid with oil and cannot jump). In the form of a “normal turn of power, but no car”, the removal of the spark plug would reveal the electro-humidity。
Solutions:
Dismantling spark plugs, drying them with paper towels, placing them on the engine (for electrodes to contact the metal), opening the key door and pressing the start button to see if there are sparks (with sparks indicating no problem)
Screw the gas door to the bottom, press the start key for three to five seconds (discharge the gasoline from the gas tank), reload the spark plug and start it again。
Iii. Final check machine: power switch but engine card delay (most severe, 10%)
If the circuits are normal (electricity, oil), but the engine is uncarried and may be mechanical (e. G., piston-cage, gas-gate death)。
1. Engine card delay (starter switcher but no movement engine)
The sound of the buzz was heard at the start, but it was felt that the engine was not following
(a) starter gear damage (the gear of the starter cannot bite the starter)
Pistol card stagnating (a shortage of oil leads to a pull tank, or water in the tank)。
Self-censorship: cross-cycling can hold a one-bed and push the body to see if it can be pushed (normally pushable, if stuck); pedals can only be opened for inspection. This has to be done in a maintenance shop, which is more expensive (opist, jar, $500-1,000)。
2. Death from the airlock (unable to start after sudden fire out)
Mostly due to the passing of the straight-time chain, which is common in old cars, the air doors and pistons collide, the gas doors are bent and the cylinders are free of pressure and cannot be activated. The feature is that “the motor turns very easily on start-up (without compression of resistance), but not in the car”。
Self-check: dismantling spark plugs, blocking spark plugs with fingers, pressing the start-up button without feeling the air current shock (normally with visible pressure) suggests that the gas door is dead. The maintenance requires the removal of the head of the tank and a gas breaker (300-800, car type)。
Iv. Guide to pit avoidance: the three most easy-to-dissemination kits in repair shops
“the failure of the fire means that the engine is broken and needs to be overhauled”
Ninety per cent is a trick! The engine has a cost of at least $1,000, whereas 80 per cent of the problem is small parts such as bottles and fuses. Method of response: first, you follow the order of “wire and gas” before repairing it。
"cylinders need to be replaced without electricity"
If it is “forgot to turn off the light,” it will continue to be used after charging (with smart chargers charged for eight hours to repair the slight sulphide); only if “one day after charge, the power is not available” (the bottle cannot be stored) is replaced. To make more money, the repair shop will get you to change the bottle, don't trust it -- buy yourself a charger (about $100), keep the bottle for a year。
“the electric spray vehicle must be repaired at the 4s and cannot be repaired outside”
As in the case of electric spray vehicles, the basic circuits (voltage bottles, fuse wires, relays) and the car petrochemicals, the general maintenance shop can be repaired; only the “nozzle” and the ecu malfunctions” require specialized equipment. If the repair shop said that “the electric spray truck was not responding, it had to be towed to 4s”, the probability would be to earn a tow fare and try to change the shop。
V. Routine prevention: the five habits that make motorcycles “at once”
The parking must turn off the electrical appliances: after the fire has shut down, check the lights and turn them off. In particular, the light should not be lighted for one night (the battery will run out in six hours)。
Periodic charge of bottles: long-term non-cycling (more than one week), removal of bottles (or relay of smart chargers) and monthly charge (preventing sulfurization)。
With regular gasoline: not cheap, but with oil from private gas stations (rich impurities and blocked roads), it is proposed to add medium oil, medium petrochemical no. 92 and above。
At least once a week: motorcycles are afraid of riding and are afraid to play — prolonged stoppage can lead to power loss, tyre deformation, jamming of carburetor, riding for more than 20 minutes per week, allowing engines and cylinders to “activate”。
Periodically inspect the circuits: every six months, see if the cylinders are unwieldy (with copper rust flushed with hot water and oxidized with oxidation) and activate the switch and the relay connection。
The motorbike failed to react, and the core was sequenced in the order of the “wire-to-wire-to-wire machinery”: first, looking at the cylinders, fuses, then looking at the oil on the road and finally considering the mechanical failure. Remember: 80 per cent of the problems can be solved on their own, so don't go to a maintenance shop and get caught in the hole。
As riders, learning to conduct basic screening not only saves money, but also saves itself when a half-way anchor is broken (e. G. With a back-up fuse, jumper line). Finally, if there is a mechanical failure (cracker, gas door death), do not force the start (heavy damage) and contact the maintenance shop in a timely manner。
Next time there's a fire that doesn't react, take a deep breath — the rate is probably not a big problem — and the motorbike will soon be back on the line。
