What's wrong with your motorcycle?
Free guided motorcycle diagnostics and step-by-step repair guides. Answer a few questions about what your bike is doing, get the most likely cause with an honest safety call, see what it costs to fix yourself versus at a shop, and follow the guide that fixes it. 15 diagnostic flows, 27 repair guides, 13 brands. No login, no paywall.
What is your bike doing?
- Motorcycle won't start — Starter, fuel, and spark checks
- Engine noise — Clicks, knocks, or rattles
- Battery problems — Charging and voltage checks
- Chain noise — Tension, wear, and lubrication
- Brake issues — Pad, fluid, and lever feel
- Overheating — Cooling and airflow checks
- Oil leak — Gasket, seal, and drain checks
- Excessive vibration — Balance, mount, and bearing checks
- Clutch problems — Slipping, dragging, and lever feel
- Shifting issues — False neutrals and missed shifts
- Lights and electrics — Dead circuits, fuses, and flicker
- Exhaust smoke — What blue, white, and black mean
- Runs rough or stalls — Misfires, hesitation, stalling at idle
- Backfiring or popping — Pops on decel, bangs, spitting
- Warning light on — Oil, temperature, engine and ABS lights
Popular repair guides
- Oil & Filter Change — Beginner, 30-45 min. Parts $35-70 vs $110-200 at a shop.
- Brake Pad Replacement — Intermediate, 45-60 min per caliper. Parts $30-90 vs $120-250 at a shop.
- Chain Adjustment & Maintenance — Beginner, 20-30 min. Parts $15-40 vs $60-120 at a shop.
- Battery Replacement — Beginner, 20-30 min. Parts $60-140 vs $150-260 at a shop.
- Spark Plug Replacement — Beginner, 30-60 min (varies by bike). Parts $15-70 vs $90-220 at a shop.
- Valve Clearance Check & Adjustment — Advanced, 2-4 hours to check; a full day if shims are needed. Parts $40-160 vs $250-900 at a shop.