Difference Between Vented And Non Vented Fuel Caps

If you re in the market for a new gas fireplace you ve probably noticed that there are two types of gas logs from which to choose.

Difference between vented and non vented fuel caps.

Posted in problems questions and technical. While they may look alike on the surface there s actually a big difference between them. The injection models may use a non vented cap but only so that petrol vapour is vented through a charcoal canister so it will be absorbed not released to the environment. A vented gas cap vents the gas fumes into the atmosphere.

Hi all mini cooper 1995 but with 1300 mg metro engine on hif 44 carb. The reason i ask is that when filling the tank near to the brim petrol started to come out of the filler neck due to perished rubber. Not really a problem but what other than the obvious is the difference to a vented or non vented petrol filler cap. A non vented cap system routes the fumes thru the engine to be burned.