Simon,
Attached is an image from the U.S. parts manual that shows the vapor recovery tank and its plumbing. It is from the parts manual for a 1972 model year GTV 2000 but they didn't change much, if at all for 1974.
Definitely there for emission control. I've never deleted one from a car but if your car is running fine without being properly plumbed then it is probably okay.
I do replace the factory lines with modern fuel resistant tubing.
Bob
Attached is an image from the U.S. parts manual that shows the vapor recovery tank and its plumbing. It is from the parts manual for a 1972 model year GTV 2000 but they didn't change much, if at all for 1974.
Definitely there for emission control. I've never deleted one from a car but if your car is running fine without being properly plumbed then it is probably okay.
I do replace the factory lines with modern fuel resistant tubing.
Bob