Replacing vacuum hoses

[PECKHS]

As my car's idling was fluctuating, I decided to do a vacuum leak test. I removed the vacuum hose to the MAP, and nothing happens... no sudden change in idling speed. Am I right to say that there may be a vacuum leak some where?

As I am waiting for my Samco hoses to arrive, I was thinking of changing all the vacuum hoses too.

I tried to do a search on the locations of the vacuum hoses, but most of the pages were already obsolete(system returned page requested does not exist).

I looked through the manual but there is also no diagrams of where the hoses are.

Can someone kindly point me to a reference where I can find the information?

Also, other than 2m of 3mm hoses, what other sizes I may need?

Thanks

Peck

[RayD]

Peck,

As you say, removing a vacuum pipe would normally result in the revs rising … and as it only applies to the first pipe coming off there’s a good chance you already have a leak – or that particular pipe is blocked.

Ray

[PECKHS]

Peck,

As you say, removing a vacuum pipe would normally result in the revs rising … and as it only applies to the first pipe coming off there’s a good chance you already have a leak – or that particular pipe is blocked.

Ray

tks Ray, gonna replace them all
cheers

peck

[norman lovie]

my 95yr S2 - the vacuum hoses in general are knackered and probably explain a few minor niggles - like a heating system that was a bit random in use ( hose to vacum bottle was split
2ndry throttle was permanently open - effecting low end - hose was split

if you haven,t already - then consider a general all round hose replacment, your original ones must be well past their sell buy date

[nitroman]

Seriously consider going to silicone hoses. The wider the outer silicone body thickness, the better, as it will take away from the possibility of kinking (which increases with rising heat). You can usually find the same size hose (for instance, 3mm is the measure in diameter of the actual inner hole). Outside of that 3mm vacuum "passage" you can easily find hoses offered in at least two different "shell" thicknesses. Of course, the thicker the outer sleeve the more actual product (silicone) you are buying, so it will cost more, but last MUCH longer. And that brings me to finally make the only point I set out to. Silicone lasts so much longer than rubber, rubber should go hide in shame.