Fuel line diameter?

[Rovernaut]

I went ot Repco today to try and buy a "t"piece to screw into my fuel ine to check my fuel pressue and was asked if it was 6mm or 8mm.
As the wrong one will restrict flow.
Any one know please?

[kaistuff]

Go the 8mm as it is only a "t" piece to fit a pressure gauge

or take your line of at the carby or injector pump and have a look

[PhilipA]

Why do you want to check the fuel pressure if you are talking 3.5 carby???
It only has to be 4lbs or something and this is automatically set by the tick tick pump and the size of the return to the tank.
Either it ticks or it doesn't.
Don't worry be happy.
Regards Philip A

[DEFENDERZOOK]

its an efi......

[PhilipA]

Whoops ,Kaistuff post is 3.5 carby.
Where do you plan to tap in?
My 3.9 has crimped ends on the soft hose at the back of the rail and you would have to butcher the hose to put a Tpiece in. Only way would be to get a t piece with ends to take the same taper fittings as the hose.
I bet a specialist would have one and you are really asking for trouble to cut into a high pressure fuel hose. The LOW pressure hose is push on, but that would tell you nix.
Regards Philip A

[Rovernaut]

I think I can test it via the Schroader valve on the fuel rail as my other post.
Thanks again