What causes Carb jets clogged from old fuel on the Honda Cb Series (likely Cb350 Or Cb450)?

Cold start behavior, idle quality, throttle response Estimated fix cost: $50-$150

What causes Cam chain tensioner worn, rattles on startup on the Honda Cb Series (likely Cb350 Or Cb450)?

Listen for top-end rattle at cold idle Estimated fix cost: $80-$200

Rough idle, hard starting, inconsistent spark Estimated fix cost: $20-$80

Oil around cam cover, head gasket area Estimated fix cost: $100-$300

Known issues to inspect before buying a used Honda Cb Series (likely Cb350 Or Cb450). What to check and how much repairs cost.

MODERATE

Cold start behavior, idle quality, throttle response

Fix cost: $50-$150

MODERATE

Listen for top-end rattle at cold idle

Fix cost: $80-$200

MINOR

Rough idle, hard starting, inconsistent spark

Fix cost: $20-$80

MODERATE

Oil around cam cover, head gasket area

Fix cost: $100-$300

☐Pull plugs, check color and condition

☐Verify oil is clean, not milky

☐Test both carbs sync at idle

☐Check frame for cracks near welds

Solid but needs carb and ignition attention