Engine - Popping Noise From The Exhaust

Bulletin No.
93-031

Model
1992 - 93
CIVIC

Applicable To
ALL

File Under
ENGINE

Issue Date
AUG 27, 1993

Popping Noise From the Exhaust
(Supersedes 93-031, dated August 6, 1993)

SYMPTOM

A loud, metallic, popping noise from the exhaust system after accelerating or when coming to a stop.

PROBABLE CAUSE

Insufficient clearance between the heat shield and the "B" pipe.

CORRECTIVE ACTION

[NEW] Install a washer at each of the two clamps inside the heat shield.

1. Raise the car on a lift.





2. Remove the two nuts and bolts from the left side of the heat shield.

3. Inspect the "B" pipe heat shield for cracks; replace it if necessary.

4. At each location, use a flat tip screwdriver to spread apart the flanges of the clamp, and install a washer (see PARTS INFORMATION) as shown.

5. Reinstall the two nuts and bolts. Torque the bolts to 12 N-m (1.2 kg-m, 9 lb.ft.).

6. Test drive the car to confirm that the noise has been eliminated.

PARTS INFORMATION

Washer: P/N 90538-324-999, H/C 4296414 (two required)

WARRANTY CLAIM INFORMATION

In warranty:
The normal warranty applies.

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

Operation number: 311020

Flat rate time: 0.3 hour

Failed part: P/N 18220-SR4-A22
H/C 3876752

Defect code: 042

Contention code: B07