Why do I hear this tapping noise?
I have an 04 Tahoe with the 5.3 v8. I changed the
plugs and wires, and now I hear a noise. Like a
ticking, or tapping. It's not loud, but I hear it. At first
I thought a belt was making the sound because it's
repetitive. That didn't make sense though because
A) I wasn't working on them, and B) I changed the
belts, pulleys, and water pump last summer. One
person suggested that maybe a plug was to tight
and it's getting hit. I'm not even sure if that can
happen. Anyone have an idea?
7 Answers
Auto_Centric answered 4 years ago
I suggest reviewing the Cylinder Deactivation System. The base 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect.
Auto_Centric answered 4 years ago
I Suggest reviewing the Cylinder Deactivation System. The base 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect of lifter noise.
Auto_Centric answered 4 years ago
I suggest reviewing the Cylinder Deactivation System. The 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect of lifter noise.
Auto_Centric answered 4 years ago
I suggest reviewing the Cylinder Deactivation System. The 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect of lifter noise.
Auto_Centric answered 4 years ago
I suggest reviewing the Cylinder Deactivation System. The 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect of lifter noise.
Auto_Centric answered 4 years ago
I suggest reviewing the Cylinder Deactivation System. The 5.3-liter V-8 uses an active fuel management system that deactivates cylinders to conserve fuel. The number one suspect of lifter noise.
Wait until after dark. Start the engine and raise the hood. You might be hearing an ignition (spark) leak. If that's the case you'll see the sparking in the dark. Look closely at the area of the engine bay where you hear the noise. Hope that helps! Jim
