Fuel System Service in San Marcos, TX

About This Service

Clean or replace clogged fuel injectors, lines, and weak fuel pumps to restore correct air-fuel ratios and engine power for optimal performance.

The fuel system delivers a precise mixture of fuel and air to each cylinder under varying load conditions. Clogged fuel injectors cause lean misfires and rough idle. A weak fuel pump causes hesitation under acceleration and hard starting. Clogged fuel filters starve the engine under load. We diagnose fuel system faults with pressure testing and injector flow analysis, then clean or replace components as needed to restore correct fuel delivery.

• Fuel pressure testing and injector flow analysis
• Professional injector cleaning or replacement
• Fuel pump and fuel filter replacement
• Restores correct air-fuel ratio and engine power

At Riley Auto Care & Transmissions, we've been serving drivers in San Marcos and throughout Central Texas since 1978. Our certified technicians use the latest diagnostic equipment and quality parts to get your vehicle back on the road right the first time.

We'll give you an honest assessment and a clear written estimate before any work begins. No surprises — just straightforward service you can trust.