Vacuumleak

Asked by Nancy Jul 24, 2016 at 03:03 AM about the 1999 Pontiac Bonneville 4 Dr SSEi Supercharged Sedan

Question type: Maintenance & Repair

Had plugs and wire changed autozone said
there machine said plug #3 is  misfireing its
clearly not that is it an vacuum leak eugine
light stay on then going up inclines it bogs
the light flashs

1 Answer
42,415

Auto_Centric answered 8 years ago

Connect a vacuum gauge to direct intake vacuum 19-21Hgin Ok, And flashing engine light indicates SEVERE engine misfiring

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