Carbon Canister - Frozen, May Impair Engine Performance

87porsche05

Subject: Frozen Carbon Canister May

Impair Engine Performance
Model

944S
Group

2
Part Identifier

2025
Number

8714
October 16, 1987



Water which enters the active carbon canister through the extended air inlet hose (arrow 1) may impede fuel tank venting and could freeze in winter weather. If this happens, the fuel tank could collapse and the engine performance could possibly be impaired.

If this condition is found when repairing, proceed as follows:

^ Remove the left front wheel house lining and disconnect the extended air inlet hose at the coupling (arrow 2).

^ Tape over the end of the disconnected air inlet hose. Secure hose out of the way with a tie-wrap. Complete removal of the extended hose is not necessary.

^ Reinstall wheel house lining.

Note: A frozen active carbon canister must be replaced.

The extended inlet air hose was discontinued in 944S production from the following VIN:

94 HN 45 3032