ACDelco Oil Filter Lookup: Verify PF and GM Part Numbers
Use current GM and ACDelco information to identify an oil filter, reconcile PF and GM numbers, and resolve old labels or catalogue conflicts before buying.
Automotive guides
Why New Brake Pads Squeak: Causes and Checks After Service
Understand new brake pad squeaks, which symptoms need prompt attention, and what to ask a workshop to check before blaming the pad material.
Why Do Spark Plugs Keep Burning Out? Wear, Heat and Damage
Distinguish normal electrode wear from overheating, melting and misfire. Learn what repeated spark-plug damage requires before fitting another replacement set.
Does Motor Oil Expire? Shelf Life, Date Codes, and Storage
Understand motor-oil shelf life, unopened versus opened bottles, manufacturer date codes, storage problems, and why a bottle date is not an oil-change interval.
Why Does Motor Oil Smell Like Gas? Fuel Dilution Explained
Understand fuel-like oil odors through level trends, driving history, laboratory testing, and vehicle-specific diagnosis. Smell alone cannot measure dilution.
Why Does My Spark Plug Keep Fouling? Find the Recurring Cause
Separate carbon, oil and fuel fouling from external staining. Learn what recurring deposits reveal, which evidence to keep, and why replacement alone may fail.
Why Don’t Diesels Have Spark Plugs? Heat and Starting Aids
Diesels ignite fuel using compressed hot air. Learn how glow plugs, intake heaters and block heaters differ, and why a cold-start fault needs diagnosis.
Wet Driver-Side Carpet: How to Trace a Car Water Leak
Use timing, fluid clues and entry-path checks to investigate a wet driver footwell, including rainwater, AC condensate and possible coolant leaks.
Coolant on Spark Plugs: Wells, Cylinders and Diagnosis
Coolant around a spark-plug well differs from coolant inside a cylinder. Learn how location, symptoms and vehicle-specific tests guide the diagnosis.
Oil in an Air Intake Hose: Causes and Checks
Learn how intake location, crankcase ventilation, oil level and turbo-system checks help distinguish a light oil trace from a condition needing repair.
OBD2 Scanner Not Working: Power and Connection Checks
Separate a dead scanner, no vehicle communication and missing functions. Check power, ignition state, app pairing and vehicle coverage in order.
Will a Bad Fuel Injector Throw a Code? Diagnostic Limits
A faulty injector may trigger a circuit, misfire or fuel-system code—or no code. Learn what scanner results establish and which checks should come next.
Can Spark Plugs Turn On the Check-Engine Light?
Understand how spark plugs can trigger an engine warning, what flashing lights and misfire codes mean, and why a scan code does not identify the failed part.