How many spark plugs does a V8 need?

Standard V8: 8 plugs. HEMI with dual spark: 16 plugs.

Is a V8 tune-up expensive?

DIY: $40-$120 for plugs. If adding coils, $200-$400. HEMI 16-plug engines are on the higher end.

High Severity

Ignition System

Cylinder 8 is misfiring. Only on V8 engines.

Common Fix

Replace spark plug or coil

Estimated Cost (DIY)

$5 - $80

Bad spark pluglikely

Faulty coillikely

Bad injectorpossible

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How many spark plugs does a V8 need?: Standard V8: 8 plugs. HEMI with dual spark: 16 plugs.
Is a V8 tune-up expensive?: DIY: $40-$120 for plugs. If adding coils, $200-$400. HEMI 16-plug engines are on the higher end.

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