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2012 Mazda Mazda3 Fuel Injectors
Injectors spray fuel into the engine in a fine mist. Dirty or failing injectors cause rough running.
Compare fuel injectors for your Mazda3 in the appSigns it may need replacing
- Rough idle or misfires
- Worse fuel economy or a fuel smell
- Hard starting or a check-engine light
At a glance
| Part | Fuel Injectors Fuel System › Fuel Injectors |
|---|---|
| Typical life | Often 100,000 miles or more. |
| DIY difficulty | Intermediate Fuel pressure must be released and new seals fitted. |
Lifespans and difficulty are general. They vary with the engine, trim, driving and climate, and your owner's manual and a qualified mechanic should have the final say.
Before you buy
Replace the O-rings or seals with the injectors. Replacing them as a matched set is common.
Confirm the part fits your exact 2012 Mazda Mazda3 by checking your VIN, engine size and trim with the seller. The Mazda3 was sold with different options across the 2012 model year, and a part that fits one build may not fit another.
Where to buy a 2012 Mazda Mazda3 fuel injectors
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