Thread: Petrol fumes smell in car

The filler connects to the tank via a hose that is inside the vehicle. Likely leaks are at either end of this or the hose itself.

Also, leaks round the fuel pickup or the sender, both on top of the tank, are likely to be smelled inside.

As far as I know all Series have a vented fuel cap, and in the front tank of Series 2/3 there is a separate vent hose from the top of the tank to just below the filler. This is also a potential source of leaks.

(Some of the above may not apply if the front tank is a non-standard addition)

John

Thanks john, looking into it now.

Originally Posted by JDNSW

The filler connects to the tank via a hose that is inside the vehicle. Likely leaks are at either end of this or the hose itself.

Also, leaks round the fuel pickup or the sender, both on top of the tank, are likely to be smelled inside.

As far as I know all Series have a vented fuel cap, and in the front tank of Series 2/3 there is a separate vent hose from the top of the tank to just below the filler. This is also a potential source of leaks.

(Some of the above may not apply if the front tank is a non-standard addition)

John

John, are you serious when you say that the cap is supposed to be vented? I used a filler assembly on my camper trailer and the fuel pump sucked a vacuum on the tank strong enough I couldn't get the fuel cap off

sorry for the hijack eddie

Originally Posted by debruiser

John, are you serious when you say that the cap is supposed to be vented? I used a filler assembly on my camper trailer and the fuel pump sucked a vacuum on the tank strong enough I couldn't get the fuel cap off

It is possible there are some that are unvented, but I have never seen one. It is perhaps more likely that a cap has a vent that is blocked or stuck.

John

Interesting.... I will have to investigate that.

My 1976 series 3 had a sealed fuel cap as it had a carbon filter on it as a form of pollution control. I found out the hard way when I put a perkins diesel in it, the fuel pump sucked the sides of the tank in and fractured when the strengthening folds were. Solved the problem by drilling a small hole in the cap.It also had a one way shuttle valve on the line which I think went back to the tank. Make sure and watch when you fill right up that expansion of the fuel does not force the fumes out as well.
Lindsay.