Flush · Test · Repair

Fuel System Repair in Johnson City, TN

Hesitating, stalling, or hard to start?

Fuel delivery problems can come from the tank, the lines, the pump, the injectors, or the electronics that control them. Our ASE certified technicians test the whole system to find the real cause, not just the easy guess.

Call (423) 913-3111 Schedule Service

When Fuel Delivery Goes Wrong

Your engine can only run as well as the fuel actually reaching it. A clogged injector, a weak pump, contaminated fuel, or a failing sensor can all cause the same kinds of symptoms, hesitation, rough idle, stalling, or trouble starting, which is exactly why real testing matters more than guessing. We check the mechanical side of the fuel system and the electronic components that control it, so you get an accurate diagnosis before any parts get replaced.

What we service

Fuel System Services We Provide

Fuel System Flush

Deposits and residue build up in the lines, rail, and injectors over normal driving. A flush clears that buildup out and can restore lost power and smoother idling.

Water in Fuel Diagnosis

Water contamination causes rough running, hesitation, stalling, and hard starting, and it's often mistaken for an ignition or injector problem. We test for it directly rather than guessing, and drain and correct the fuel system when it's found.

Fuel Rail Inspection & Testing

We check the fuel rail for pressure, leaks, and even delivery across all cylinders, since an uneven rail can cause a misfire that looks like an unrelated engine problem.

Fuel Pump Testing & Installation

We measure fuel pressure, volume, and pump amperage draw to confirm whether your pump is actually failing before recommending a replacement, then install and test the new pump under real driving conditions.

Fuel Injector Service

Clogged or failing injectors cause misfires, poor fuel economy, and rough idling. We clean, test, and replace injectors as needed, cylinder by cylinder.

Electronic Fuel Component Repair

Fuel pump control modules, pressure sensors, and related wiring can fail just like any other part. We diagnose these electronically and repair or replace only what's actually bad. See our electrical system repair for more on how we handle wiring and sensor diagnostics.

Fuel Filters and Preventive Maintenance

A fresh fuel filter is one of the simplest ways to protect the rest of the fuel system from debris and contamination, and it's part of the routine service we cover on our preventive maintenance page. If you manage multiple vehicles, we also handle fuel filter service as part of scheduled fleet maintenance, so an entire fleet stays ahead of fuel system problems instead of reacting to them one at a time.

Every qualified fuel system repair we perform is backed by our 36 month, 36,000 mile nationwide warranty on parts and labor. We service fuel systems on cars, trucks, SUVs, and 4x4s, domestic, import, and European, including BMW, Mercedes-Benz, and Audi. We diagnose before we quote, and we never sell a repair you don't need.

How Much Does Fuel System Repair Cost?

It depends entirely on what's actually wrong. A fuel filter or a flush costs far less than a fuel pump, an injector, or a wiring repair to an electronic component. We test first with real pressure and diagnostic checks, then give you a real, itemized price, not a phone guess.

Customer reviews

What Our Customers Say

"I had a miss in the engine and took it to a couple of other shops that just threw parts at it and didn't fix the problem. American & Import found it and replaced a fuel injector on cylinder 1. It's running great."

Allen E.

"The service was excellent. They kept in touch with me throughout the service. The over and beyond was something I didn't expect, especially for a car that's JDM from Japan. I will definitely be using them again."

Valentine V.

"Thorough explanation with pictures and keeps you posted on the car status. Highly recommend!"

Bettina C.

"Always dependable, professional, friendly, and the work is done right the first time."

Doug H.

Read more reviews on Google: Market Street (700+) · Hopper Road (90+)

Two shops in Johnson City

Bring Your Vehicle to Either Location

Location One

West Market Street

3832 W Market Street
Johnson City, TN 37604

(423) 913-3111

Call Shop Directions

Location Two

Hopper Road

216 Hopper Road
Johnson City, TN 37604

(423) 328-7036

Call Shop Directions

Common questions

Fuel System Repair FAQ

How do I know if I have water in my fuel?

Common signs include a rough or sputtering idle, hesitation or stalling, difficulty starting, and a check engine light. Water in fuel is more common after filling up somewhere with old or poorly maintained storage tanks, or after flooding.

What is a fuel system flush and when do I need one?

It cleans deposits and residue out of the fuel lines, rails, and injectors that build up from normal driving. It can restore lost power and smoother idling, and is generally recommended every 30,000 miles or when performance starts to suffer.

How do you test a fuel pump?

We check fuel pressure and volume at the fuel rail with a gauge, along with pump amperage draw, to confirm whether the pump is actually delivering fuel at the pressure your engine needs.

What electronic fuel components can fail?

Fuel injectors, the fuel pump control module, pressure sensors, and related wiring can all fail or degrade over time. We diagnose these electronically before recommending a repair or replacement.

How much does fuel system repair cost?

It depends entirely on what's actually wrong. A fuel filter or flush costs far less than a fuel pump, injector, or electronic component repair. We test first and give you a real, itemized price.

Is fuel system work covered by a warranty?

Yes. Qualified fuel system repairs are backed by our 36 month, 36,000 mile nationwide warranty on parts and labor.

Serving Johnson City and the Tri-Cities

We handle fuel system repair for drivers across Johnson City, Jonesborough, Gray, Telford, Chuckey, Elizabethton, Erwin, Fall Branch, Kingsport, Limestone, Piney Flats, and throughout Washington, Carter, and Unicoi counties. See our full list of services, learn what sets our shop apart, or head back to our home page.

Real testing, real answers

Let's get your fuel system running right

Hesitation, stalling, or hard starting, our ASE certified team will test the whole system and fix what's actually wrong.

Schedule Service Call W Market St Call Hopper Rd

W Market St · (423) 913-3111 Hopper Rd · (423) 328-7036