Fuel System - Tapping Noise During Cold Starting

Group
2

Number
8907

Model
944 S2

Part Identifier
2069

October 20, 1989

Subject:
Tapping Noise on Cold Starting

Models Affected:
944 S2 Model 89

Condition:
Rattling or tapping noise from right rear of vehicle occurring from 1 to 2 minutes after cold start.

Cause:
Pulsations in returning fuel to the tank transmits noise in the rear of the car.

Repair Procedure:
None. At this time, it is considered normal. However, the fuel return line should be checked for proper clearance to the body and corrected if necessary.