Honda NSS250/A Service Manual
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Also See for NSS250/A:
- Owner's manual (233 pages) ,
- Manual (718 pages) ,
- Owner's manual (161 pages)
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HONDA 2002 REFLEX GARAGE KEPT 520 MILES ? WILL NOT START NEW BATTERY ? CRANKS FINE ? PULLED PLUG HAS GOOD SPARK ? I INJECTED SOME 100% GASOLINE INTO THE CYLINDER ? AND IT STILL DID NOT FIRE ? CRANKS AND ? RARELY TOU HERE A LACKADAISICAL POP NOT FIRE UP AND RUN MOMENTARILY ?
If a 2002 Honda Reflex NSS250/A won't start despite having a new battery, good spark, and fuel injected into the cylinder, possible reasons include:
1. Incorrect Fuel-Air Mixture: Even with fuel injection, the mixture might be too rich or too lean due to a faulty injector, clogged air filter, or malfunctioning sensors like the MAP, TPS, or IAT.
2. Compression Issues: Low or no compression from worn piston rings, damaged valves, or a blown head gasket can prevent starting.
3. Timing Problems: Incorrect valve or ignition timing due to a slipped or broken timing chain/belt or improperly set timing can prevent combustion.
4. ECU or Sensor Failure: A faulty ECU or bad sensor (e.g., crankshaft position sensor) can prevent proper fuel delivery or spark timing.
5. Clogged or Faulty Fuel Injector: The injector may spray fuel, but not in the proper pattern or quantity needed for combustion.
6. Choke or Idle Control Malfunction: If the idle air control valve or automatic choke is stuck, it can affect cold starting.
7. Excess Fuel Causing Flooding: Too much fuel can flood the cylinder, wetting the spark plug and preventing ignition.
8. Security or Kill Switch Activated: A kill switch or sidestand sensor may prevent starting even if mechanical systems are okay.
Compression test, checking timing marks, and scanning for ECU error codes can help diagnose the issue.
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How to remove the ignition switch on it
To remove the ignition switch on a Honda NSS250/A (also known as the Honda Reflex), follow these steps:
1. Disconnect the Battery:
- Turn off the ignition and disconnect the negative terminal of the battery to prevent electrical shorts.
2. Remove Front Covering Panels:
- Remove the screws and clips securing the front fairing or leg shield to access the ignition switch area.
- Carefully detach the panels around the ignition switch.
3. Access the Ignition Switch:
- Locate the ignition switch mounted on the steering column.
- Trace the wiring harness from the switch to its connector and disconnect it.
4. Remove the Ignition Switch:
- The ignition switch is typically secured with tamper-proof bolts or screws.
- Use a drill or special tool to remove these bolts.
- Once unbolted, carefully pull out the ignition switch.
5. Install Replacement (if needed):
- Position the new switch.
- Secure it using bolts or screws.
- Reconnect the wiring harness.
6. Reassemble Panels and Reconnect Battery:
- Reinstall all body panels and screws.
- Reconnect the battery.
7. Test the Ignition:
- Turn the key to ensure the ignition works properly.
Note: Some models may require key programming if replacing the ignition switch.
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Tire pressure front and rear