Vacuum hoses (boost)
 

Ok, been to the local motor factors and got some hoses to replace the vacuum hoses as I think I've a leak, it's acting like a bleed valve and making the car hit fuel cut.

The hose I got was not specific for vacuum hoses though, will this make a difference? It's the hose used for diesel return from the injectors!!!

Do the hoses have to be the exact internal diameter as the ones I'm replacing? As some of the hoses I've bought have a smaller ID, therefore a tighter fit (and hopefully no leaks!!)

Anyone? Please help as these will be going on tomorrow!

Nick ;)