Blue smoke from the exhaust on a Kawasaki Z400 2023
Is your Kawasaki Z400 2023 showing "Blue smoke from the exhaust"? Here's the most likely cause, the checks to run, and the parts that fit your bike.
Technical bulletin
Kawasaki Z400 2023 — owner breakdown
The Kawasaki Z400 2023 is a Japanese-built midweight 399cc four-stroke machine, catalogued from 2019 to 2026. Checks below are ordered for this bike.
- Engine
- 399 cm³ · four-stroke
- Category
- midweight
- Production years
- 2019–2026
- Newest model year
- 2023
Catalog data and community feedback — indicative markers, not a workshop manual.
⚠️ This tool helps you understand what's going on with your motorcycle; it doesn't replace the inspection or judgment of a certified mechanic. If in persistent doubt, if a safety-critical part is involved (braking, steering, bearings, transmission), or if the problem keeps recurring, have the diagnosis confirmed at a workshop before doing any work.