How to Diagnose a Bad Fuel Injector at Home Without a Scanner
You can diagnose a bad fuel injector at home without a scanner using four tests: the listening test with a long screwdriver or mechanic’s stethoscope, the cylinder balance test by pulling injector connectors one at a time, the resistance test with a multimeter, and a visual inspection of the injector harness and o-rings for obvious […]
How to Diagnose a Wheel Bearing Without Lifting the Car
You can diagnose a failing wheel bearing without lifting the car using the swerve test: while driving at 50 to 60 mph on a safe, empty road, gently weave the vehicle left and right: the noise from a failing wheel bearing increases when weight loads the bad bearing and decreases when weight shifts away from […]