Fuel Injector Problems
Clogged or leaking injectors cause a rough idle, misfires, hesitation and poor mpg.
Can I drive it? Drive with care
A leaking injector is a fire risk. If you smell fuel, stop.
Typical repair cost
$100-$250 for cleaning, $300-$1,000+ for a set of injectors.
General US estimates, not quotes. Prices vary by region, vehicle and shop.
Symptoms to Look For
These signs indicate you might be experiencing this issue
- Rough idle or misfiring
- Poor fuel economy
- Engine hesitation
- Check engine light (misfire codes)
- Strong fuel smell
Potential Causes
Most likely reasons for this problem, sorted by probability
Repair Solutions
Step-by-step instructions to diagnose and fix the problem
1Fuel Injector Diagnosis
- 1
Use fuel injector cleaner in gas tank
- 2
Test injector resistance with multimeter
- 3
Listen for clicking sound with mechanic's stethoscope
- 4
Check for leaking injectors
- 5
Consider professional injector cleaning service
Need professional help?
Find a repair shop near you, or describe your exact symptoms to the AI mechanic
When to See a Mechanic
Do not wait if any of these apply
- A fuel smell
- Misfire codes
- Rough idle persists after cleaning
How to Prevent It
Simple habits that stop this problem coming back
- Use Top Tier fuel
- Use a quality injector cleaner occasionally
- Replace the fuel filter on schedule
Frequently Asked Questions
Does fuel injector cleaner work?
It can help mild deposit build-up. It will not fix a failed injector.
How long do injectors last?
Often 100,000 miles or more.
Related Trouble Codes
Codes a scan tool may show with this problem
Related Issues
AI-generated and informational only. This is not a diagnosis of your specific vehicle and does not replace inspection by a qualified technician.