At page 130-52 the device is shown on the Bentley manual, but there is nothing that describes the function of it , haow to chek it an how to replacet it. If there would be a leak on the manifold at high vacuum ( throttle closed,at idling) .
Could that leak at that level generate a check-engine light to come on on code P-1497?
At page 130-52 also the fuel tank vent valve is shown, but there is nothing describing the operation, haow to check to check it and if it could develop a leak at the manifold attachment.
Anybody that can help would be gratly appreciated.