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Sucks air in when unscrew the fuel cap

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40
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Andrew_Green
Posts: 5
Joined: 12 March 2010
Year and Model: S40, 2001
Location: London

Sucks air in when unscrew the fuel cap

Post by Andrew_Green »

Hi there, i've got S40 2001. I've noticed that it's sucks air in when unscrew the fuel cap. Plus i've noticed that engine's running rough when i start it after a short stop unless i unscrew the fuel cap and release the vacuum appeared in the tank. Does anyone know hot to sort it out?
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