Ignition Coil & Spark Plug Replacement for Mesquite drivers
You'll feel a misfire merging onto I-635 or US-80 as a stumble, hesitation or shake. A flashing check engine light means take it easy. We find the misfiring cylinder and replace coils and plugs at your Mesquite home, and Dallas County emissions requires the fix anyway.
Mesquite is crossed by I-30, I-635, US-80 and I-20, so a typical drive means lots of merging, interchanges and frontage-road lights. Add errands around Town East and Gus Thomasson, and Mesquite cars get a lot of stop-and-go miles for their size.
Signs of a misfire
- Engine shakes or stumbles at idle or under acceleration
- Flashing check engine light
- Codes P0300 to P0308
- Loss of power or hesitation when merging
- Worse fuel mileage
- Smell of raw fuel from the exhaust

What we do on a mobile misfire repair visit
Find the cylinder
We read misfire data to find which cylinder is missing and test whether it's the coil, plug, injector or a vacuum leak.
Ignition coils
We replace failed coils, and tell you if the others are near the end of their life too.
Spark plugs
We install the correct plugs, gapped and torqued to spec, which is important on aluminum heads.
Verify the fix
We clear the codes and test-drive to confirm the misfire is gone.
When a shop is the better choice
Rear spark plugs on some transverse V6 engines require removing the intake manifold, which takes longer. A misfire from low compression points to internal engine trouble that needs a shop.
What it costs in Mesquite
Diagnostic Visit: $150
A $50 non-refundable deposit to book and $100 when the diagnosis is complete. Best when you're not sure what's wrong.
Repair Visit: $50 + parts & labor
Booking and travel fee, plus parts and labor. Get an instant repair price from your VIN on our Get a Quote page.
Where we work in Mesquite
Areas: Town East, Downtown Mesquite, Creek Crossing, Mesquite Arena area, Gus Thomasson Rd area, South Mesquite / I-20, Military Pkwy area
Roads we cover: I-30, I-635 (LBJ Freeway), US-80, I-20, Town East Blvd, Gus Thomasson Rd, Belt Line Rd
Ignition Coil & Spark Plug Replacement in Mesquite: questions
Is it safe to drive with a flashing check engine light?
Drive as little as possible. A flashing light usually means a misfire is sending unburned fuel into the catalytic converter, which can overheat and destroy it.
Coil or spark plug: which is bad?
We can swap the coil to another cylinder and see if the misfire follows it. That tells us whether the coil or the plug is the problem.
Can you replace spark plugs at my home in Mesquite?
Yes. Coils and plugs are well suited to mobile service in your Mesquite driveway or work lot.
What does misfire repair cost?
If you don't know the cause, start with the $150 diagnostic visit. Repairs are a $50 booking and travel fee plus parts and labor, quoted before we start.
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