What causes HYPER VTEC solenoid failure on the Honda Cb400?

Rev to 6750rpm, listen for smooth VTEC engagement Estimated fix cost: $200-$500

What causes Carb sync and pilot jet clogging on the Honda Cb400?

Rough idle, stumbling below 3000rpm on cold start Estimated fix cost: $80-$250

Cold start metallic ticking near top of engine Estimated fix cost: $100-$300

Check charging voltage, inspect regulator for heat damage Estimated fix cost: $100-$250

Known issues to inspect before buying a used Honda Cb400. What to check and how much repairs cost.

SERIOUS

Rev to 6750rpm, listen for smooth VTEC engagement

Fix cost: $200-$500

MODERATE

Rough idle, stumbling below 3000rpm on cold start

Fix cost: $80-$250

MODERATE

Cold start metallic ticking near top of engine

Fix cost: $100-$300

SERIOUS

Check charging voltage, inspect regulator for heat damage

Fix cost: $100-$250

☐Test VTEC engagement above 6750rpm

☐Check service history and valve clearances

☐Inspect for coolant leaks around water pump

☐Verify charging system outputs 13.5-14.5V

Excellent overall, maintain well and lasts long