Infiniti G37 Spark Plugs & Ignition Coil Replacement (Real Job – Murfreesboro, TN)
- Mobile Mechanic Co
- Nov 7, 2025
- 2 min read
Date of Service: November 7, 2025
Location: Murfreesboro, Tennessee
Vehicle: 2011 Infiniti G37
Services Performed: Spark Plug Replacement & Ignition Coil Replacement
Business: Mobile Mechanic Co. – 615-795-1347
Customer Complaint
I received a call from a customer in Murfreesboro about their 2011 Infiniti G37 running rough and lacking power.
They mentioned:
Rough idle
Hesitation during acceleration
Decreased engine performance
Check engine light concern
These are common signs of ignition system issues.
Diagnosis Process
When I arrived, I performed a diagnostic and engine inspection.
Findings:
Worn spark plugs affecting combustion
Failing ignition coils causing inconsistent firing
Engine not running efficiently
Spark plugs and ignition coils work together to ignite the air-fuel mixture. When either fails, engine performance is affected.
The Repair
To restore proper engine performance, I replaced both spark plugs and ignition coils.
Steps performed:
Removed engine covers
Accessed ignition components
Removed worn spark plugs
Removed faulty ignition coils
Installed new spark plugs
Installed new ignition coils
Reassembled components
Tested engine performance
Total time on-site was about 1.5–2 hours.
Result
After the repair:
Engine ran smoothly
Acceleration improved
No more hesitation
Overall performance restored
The customer immediately noticed a smoother and more responsive drive.
Why Spark Plugs & Ignition Coils Fail
These components can wear out due to:
Normal usage over time
Heat exposure
Electrical wear
When they fail, they can cause:
Rough idle
Engine misfires
Loss of power
Poor fuel efficiency
Other Common Infiniti G37 Repairs I See
If you own a Infiniti G37, here are some common services I frequently perform:
1. Brake Pads and Rotors
Routine maintenance.
2. Battery Replacement
Electrical reliability.
3. Alternator Replacement
Charging system issues.
4. Cooling System Repairs
Radiator and thermostat issues.
5. Sensor Replacements
Engine performance sensors.
Why Customers Choose Mobile Mechanic Co.
On-site service in Murfreesboro and surrounding areas
Honest diagnostics—no unnecessary repairs
Experience with performance engines
Convenient service without visiting a shop
📞 Call or Text: 615-795-1347
📱 Facebook: @MobileMechanicCo
Need Ignition System Repair in Murfreesboro?
If your vehicle is running rough, misfiring, or lacking power, it may need spark plug or ignition coil replacement.
Mobile Mechanic Co. provides on-site diagnostics and repairs to restore smooth engine performance.
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