CONTENTS
SOUNDS
UNDERHOOD
RHYTHMIC

LIGHT, DOUBLE-CLICKING SOUND

CONDITION(S)

• LIGHT, DOUBLE-CLICKING SOUND MUCH LIKE METALLIC KNOCK
• SOUND BECOMES WORSE AS ENGINE WARMS

POTENTIAL CAUSE(S)

CHECK THIS FIRST:

1. WORN PISTON PIN OR BEARING (WRIST PIN KNOCK)
Have piston pin or bearing professionally replaced.

CHECK THIS NEXT:

2. DEFECTIVE MECHANICAL FUEL PUMP
Have mechanical fuel pump professionally replaced.

CHECK THIS LAST:

3. LOOSE OR CRACKED FLYWHEEL OR TORQUE CONVERTER
Have flywheel or torque converter professionally replaced.

CONTENTS
ROUGH IDLE
GROWLING SOUND