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Motorbike won’t start: checks before calling for help

Run through the usual causes in order: kill switch, fuel, battery, plug.

17 items · 4 sections · motorbike, mechanic, driver, vehicle

Start this checklist

Easy things first (5)

  • Engine kill switch is in the RUN position
  • Side stand is up, and the gear is in neutral (or the clutch is pulled in)
  • Fuel tap is open or set to ON (some bikes have a reserve position)
  • Key is fully in, and the ignition is on
  • Fuel in the tank: look and rock the bikeDo not trust a broken fuel gauge.

Electrics (4)

  • Dashboard lights come on? None at all points to a flat battery or loose terminal
  • Press the starter: a fast click-click means a very flat battery
  • Check the battery terminals are tight and not white or green with corrosion
  • Check the main fuse in the fuse box

Cranks but does not fire (5)

  • Choke on if the engine is cold, off once warm
  • Smell for petrol: a strong smell means a flooded engineWait 10 minutes, then try with the throttle held fully open.
  • If fuel is old (weeks), drain the tank and refill with fresh fuel
  • Pull the spark plug: wet or black means a clean or new plug is needed
  • Check the plug cap sits firmly on the plug

Still dead (3)

  • Kick start if your bike has one
  • Push start only if your bike’s manual allows it
  • Call roadside help or a mechanic and tell them what you have already checked