Engine Diagnostics Near Clermont, FL
A scan tool gives you a code. A code tells you which system flagged a problem. Neither one tells you which part to replace. RJ Fox Automotive combines professional diagnostic equipment with hands-on testing at our Eustis shop, about thirty minutes from Clermont via US-27 North, to find the actual root cause before we write an estimate for anything.
Full fault code retrieval across all modules, freeze frame review, live data analysis, compression testing, fuel system testing, ignition system testing, and vacuum leak detection. You get a written explanation of what we found and a clear estimate before any repair work begins.
Engine Diagnostic Services We Perform
OBD-II Fault Code Retrieval
Reading all stored and pending fault codes from the engine control module along with freeze frame data.
Live Data Analysis
Monitoring sensor outputs, fuel trims, oxygen sensor behavior, and other parameters in real time while the engine runs.
Compression Testing
Measuring compression in each cylinder to assess the mechanical health of rings, valves, and head gasket.
Leak-Down Testing
Pressurizing each cylinder to identify where compression is being lost and confirm the cause.
Fuel System Testing
Testing fuel pressure, injector operation, and fuel delivery volume to rule out fuel system faults.
Ignition System Testing
Testing spark output, coil-on-plug performance, and secondary ignition circuit integrity.
Vacuum Leak Detection
Using smoke or propane to find air entering the intake system downstream of the mass airflow sensor.
Cooling System Pressure Test
Pressure testing the cooling system to identify leaks and performing a combustion gas test when head gasket failure is suspected.
"Mr Fox and his crew have regularly serviced my friend's car for a while. The owner is very personable. He always treats everyone with respect and the dude embodies enthusiasm and positivity."
KC Scott — Clermont, FL