Tapping noise on top of motor oil pressure gauge moves around while stepping on gas pedal

Asked by Oct 10, 2019 at 03:17 AM about the 2004 Pontiac Bonneville

Question type: Maintenance & Repair

1 Answer


Engine might be worn out and what you're hearing is lifter slap. That's accompanied by loose/worn bearings that cause the oil pressure to run low at low engine speed, but rise upon acceleration. Or it might be a little slap on the fifteen year old engine accompanied by a bad oil pressure sending unit. Have a mechanic check this.

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