What causes Throttle body sync issues causing rough idle on the Yamaha R6?

Listen for rough idle, uneven revs at startup Estimated fix cost: $150-$300

What causes Stator failure draining battery on the Yamaha R6?

Test charging voltage, look for electrical gremlins Estimated fix cost: $300-$600

Inspect weep hole under engine for coolant residue Estimated fix cost: $200-$400

Listen for ticking at cold start, check service history Estimated fix cost: $400-$800

Known issues to inspect before buying a used Yamaha R6. What to check and how much repairs cost.

MODERATE

Listen for rough idle, uneven revs at startup

Fix cost: $150-$300

SERIOUS

Test charging voltage, look for electrical gremlins

Fix cost: $300-$600

MODERATE

Inspect weep hole under engine for coolant residue

Fix cost: $200-$400

SERIOUS

Listen for ticking at cold start, check service history

Fix cost: $400-$800

☐Pull valve clearance service records immediately

☐Check for crash damage on frame sliders

☐Verify coolant is clean not brown sludge

☐Test ride above 10k RPM range

Reliable if maintained, high-revving engine needs attention