On my 88 240 injection ,I find the gas in the fuel tank will evapourate slowly , means the fuel gauage will drop slowly even the car didn't move. I find this venting connection on the fuel tank :
1- a rubber hose runs from the fuel tank neck , the other end goes out to the car. (free to atmosphere) , I'm wondering this will make the gas evapourate.? 2-On the sending unit , there are 3 metal pipe opening , two are for fuelling , the 3rd is blocked by a rubber cap.Is this venting system normal ?
Thanks.