Should the fuel pressure regulator vacuum pipe be air tight

[maston]

My 390's problems continue..........
Just thought, should the vaccum pipe between the fuel pressure regulator be air tight at both the regulator end and the over run valve end ???
It is fine at the fuel pressure regulator end but not the over run valve end (pipe split and not air tight).

[mrzigazaga]

Hi Ian…If the vacuum pipe is a tight fit then you shouldn't need a clip over it…Did you change the plugs and if so what condition were they in?…
Do you still have petrol leaking in the Vee of the engine?…What is your fuel pressure at…If fuel is leaking then the pressure will drop and maybe cause some issues..I know it does on the V6…Just a thought…Ziga

[RCK974X]

My understanding is that fuel pressure regulators maintain a fixed pressure over the actual inlet manifold pressure, therefore the pipe MUST be airtight for the FPR (and your injection system) to work correctly.

[Jack Valiant]

Ian it should be tight fella the clue is in the title …. vacuum!! Just a joke matey!

Both ends of that pipe were tight when I cut out the split end at the Diner whats happened since?

Chris

[adam quantrill]

If you're suffering from split ends you need some V-O-5...

[V8 Fettler]

Leaking fuel needs to be dealt with. Old hoses? http://www.pistonheads.com/gassing/topic.asp?h=3&a...

[maston]

Thanks everyone , I have booked an appointment at the hairdressers lol.
Chris , the other end had a split in it now too so obviously was not air tight . I have trimmed it so now it is and fingers crossed it will be better , I will report back tomorrow