2007 Toyota Matrix
Mileage
166,933
Service Date
11/7/2025
Services Performed
- DURING TESTING, RETRIEVED A MISFIRE ON CYLINDER NUMBER 2. REMOVED THE SPARK PLUG FROM THIS CYLINDER AND OBSERVED COOLANT RESIDUE ON THE PLUG, INDICATING A POSSIBLE INTERNAL ENGINE ISSUE. FURTHER INSPECTION OF THE CYLINDER REVEALED POSSIBLE BROKEN PIECES OR DEBRIS INSIDE THE ENGINE, FURTHER CONFIRMING THAT THE MISFIRE IS LIKELY CAUSED BY AN INTERNAL FAILURE. THE COMBINATION OF COOLANT CONTAMINATION ON THE SPARK PLUG AND VISIBLE INTERNAL DAMAGE STRONGLY SUGGESTS THAT THE SOURCE OF THE SHAKING AND MISFIRE IS WITHIN THE ENGINE ITSELF, RATHER THAN AN EXTERNAL COMPONENT SUCH AS IGNITION OR FUEL DELIVERY. ADDITIONAL INTERNAL INSPECTION OR ENGINE REMOVAL MAY BE REQUIRED TO IDENTIFY THE FULL EXTENT OF DAMAGE AND DETERMINE REPAIR OPTIONS.
- REMOVE AND REPLACE ENGINE WITH A QUALITY TESTED USED UNIT. REMOVE ALL NECESSARY COMPONENTS INCLUDING ENGINE MOUNTS, HOSES, ELECTRICAL CONNECTORS, AND ACCESSORY COMPONENTS TO GAIN FULL ACCESS FOR ENGINE REMOVAL. TRANSFER ALL REQUIRED SENSORS, BRACKETS, AND COMPONENTS FROM THE ORIGINAL ENGINE TO THE REPLACEMENT UNIT AS NEEDED. DURING THE INSTALLATION PROCESS, REPLACED THE DRIVE BELT AND THE RIGHT SIDE ENGINE MOUNT DUE TO SIGNS OF WEAR AND DETERIORATION OBSERVED DURING INSPECTION. ENSURED THAT ALL MOUNTING SURFACES AND CONNECTION POINTS WERE CLEANED AND PROPERLY ALIGNED PRIOR TO INSTALLATION. TORQUED ALL FASTENERS TO FACTORY SPECIFICATIONS TO ENSURE SECURE FITMENT AND LONG-TERM RELIABILITY. ONCE INSTALLATION WAS COMPLETE, ADDED ALL NECESSARY FLUIDS INCLUDING ENGINE OIL, COOLANT, AND POWER STEERING FLUID. BLED THE COOLING SYSTEM TO REMOVE ANY AIR POCKETS AND VERIFIED THERE WERE NO LEAKS PRESENT. STARTED THE ENGINE AND MONITORED OPERATION TO CONFIRM PROPER IDLE, PERFORMANCE, AND TEMPERATURE CONTROL. AFTER VERIFICATION, TEST DROVE THE VEHICLE TO ENSURE SMOOTH OPERATION, NO ABNORMAL NOISES, AND THAT ALL AFFECTED SYSTEMS WERE FUNCTIONING CORRECTLY. CONFIRMED THAT THE ENGINE OPERATES WITHIN NORMAL PARAMETERS AND THAT THE VEHICLE IS READY FOR RETURN TO THE CUSTOMER.
ADRIAN R. gave our service a 5 star review on 11/10/2025
