Blue smoke from the exhaust on a KTM 390 Duke 2026
Is your KTM 390 Duke 2026 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
KTM 390 Duke 2026 — owner breakdown
The KTM 390 Duke 2026 is a Austrian-built midweight 373cc four-stroke machine, catalogued from 2013 to 2024. Checks below are ordered for this bike.
- Engine
- 373 cm³ · four-stroke
- Category
- midweight
- Production years
- 2013–2024
- Newest model year
- 2026
- Mileage to watch
- ≈ 15,000 km
Owner feedback on this model
390 Duke: keep an eye on the injection sensors and ignition quality around 15,000 km.
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.