Quote Originally Posted by Guyph_01 View Post

I've taken it off and replaced with a new fuel hose. Its a one way check valve. the engine bay of the car is covered in red dust except for that so it must have been added recently. any ideas why? Worn IP pump?

I'm not able to do the comp test for a week as im waiting for the adaptor thats coming by post from over east. Any suggestions of what I could try and check till then?
Thx
Are you having hard starting problems when the vehicle has been standing for a while? A check valve is to prevent the fuel returning to the tank and having to be pumped up again every time you start. If all lines and pump is good it should not be required. Somebody may have been trying to correct a problem by treating the symptoms. There is a mod you can do which adds a lift pump near the fuel tank to assist fuel feed to the injector pump. The injector pumps can have trouble "pulling" fuel especially when old and/or old fuel lines.