Triumph motorcycle troubleshooting

Guided diagnostics and repair guides for Triumph riders — 9 models covered, model years 2000-2024.

What's different about a Triumph

Triumph triples sit between a twin and a four in both character and sound, which is worth remembering when judging engine noise. Modern Bonneville and Speed Triple platforms are conventional to work on, with good access for home maintenance compared with a fully-faired sportbike.

Worth checking first

• Triple engine note baseline — establish what normal sounds like before chasing a noise.
• Battery condition on modern models with significant standby electrical draw.
• Coolant condition on liquid-cooled models, which is easy to forget on a bike that never overheats.

Common Triumph problems

• Triumph — Motorcycle won't start
• Triumph — Engine noise
• Triumph — Battery problems
• Triumph — Chain noise
• Triumph — Brake issues
• Triumph — Overheating
• Triumph — Oil leak
• Triumph — Excessive vibration
• Triumph — Clutch problems
• Triumph — Shifting issues
• Triumph — Lights and electrics
• Triumph — Exhaust smoke
• Triumph — Runs rough or stalls
• Triumph — Backfiring or popping
• Triumph — Warning light on

Triumph models covered

• Street Triple RS
• Speed Triple 1200
• Tiger 900
• Tiger 1200
• Bonneville T120
• Thruxton RS
• Scrambler 1200
• Rocket 3
• Trident 660

Repair guides

• Battery Replacement
• Battery Maintenance & Testing
• Chain Adjustment & Maintenance
• Brake Pad Replacement
• Brake Fluid Flush
• Spark Plug Replacement
• Oil & Filter Change
• Air Filter Replacement
• Tire Replacement Guide
• Coolant Flush & Replacement
• Valve Clearance Check & Adjustment
• Fork Oil Change
• Wheel Bearing Replacement
• Chain & Sprocket Kit Replacement
• Clutch Cable Adjustment & Replacement
• Headlight Bulb Replacement
• Fuel Filter Replacement
• Winter Storage & Recommissioning
• Brake Bleeding
• Throttle Body / Carb Synchronisation
• Steering Head Bearing Check & Adjust
• Coolant Hose Replacement
• Fuse & Relay Diagnosis
• Tyre Pressure & Wear Inspection
• Intake Boot & Vacuum Leak Inspection
• Reading Fuel-Injection Fault Codes
• Exhaust Header Gasket Replacement