Engine - Metallic Clicking Noise

9221vw01

GROUP
13


NUMBER
89-01
January 31, 1989


MODEL(S):
All w/1.8L Engines
ALL M.Y.


SUBJECT:
Engine - metallic clicking noise (Supercedes Tech. lnfo. 87-03, December 21, 1987)


A light metallic clicking noise may be heard when engine is at operating temperature between 800-1200 RPM or 1800-3000 RPM. This is caused by tolerances at the connecting rod/piston pin, which is not detrimental to the expected service life of the engine.

For customers who insist that the noise is unacceptable, a service repair kit, P/N: 026 198 399C, has been introduced to remedy the noise complaint.

The service repair kit consists of the following parts:

^ one crankshaft with diagonally drilled oil bores

^ one set of crankshaft main bearings

^ one set of connecting rods with oil bore

^ one set of connecting rod bearings with oil bore

^ one set of 57 mm (approx. 2.2 in) long wrist pins

When installing the service repair kit, note the following:

^ prior approval for Installation of the service repair kit Is needed by the Zone/ Distributor Product Support Specialist. Canadian dealers must obtain approval from their zone Technical Services Manager.

^ DO NOT substitute parts from this kit

^ refer to the Repair Manual Microfiche for engine removal procedure and torque specifications for the model being repaired.

^ it engine has pistons with 54 mm (approx. 2.1 in.) long wrist pins, the pistons MUST also be replaced. All replacement pistons now utilize the 57 mm (approx. 2.2 in.) wrist pins. Discard the wrist pins that come with the replacement pistons atid substitute with those from the service repair kit.

^ engines originally equipped with the 57 mm (approx. 2.2 in.) long wrist pin DO NOT require replacement of pistons. However, the wrist pins must be replaced by those from the service repair kit.

^ as of engine number GX 572 494 the wrist pin length has been increased from 54 mm (approx. 2.1 in.) to 57 mm (approx.. 2.2 in.).


Note

All RD engines (GTI, GT, GLI) as of 1987 m.y. have 57 mm (approx. 2.2 in.) long wrist pins

All PL engines (16 valve) have 57 mm (approx. 2.2 in.) long wrist pins.


CAUTION

Part numbers are for reference only. Always check with your Parts Department for latest information.