Mazda CX-3 2003–2020 — technical service bulletin

Bulletin MT-002-19 · NHTSA communication 10165676 · issued Sep 30, 2019

Technical service bulletin

communication type

Engine and Engine Cooling

component

2003–2020

model years

vehicle entries

Official summary

If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage.

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.