Vacuum Hose Replacement

[subi4snow]

Hay, have a split vacuum line on my forester (v3/v4 engine equivalent) and figured it was a good time to look at replacing all the vacuum hoses and was wondering if anyone had a vacuum diagram or general rule so I know which hoses I can replace with the basic silicon vacuum lines and which I should leave alone or need special hoses for (such as radiator etc or lines with restriction pills in them)???

[ADIKT]

Make sure you get some decent vacuum hose! lots of flimsy crap out there..

[Guest]

I was thinking that maybe you could blow through or suck a old hose and if you cant suck through it then it has a restricter? Would this be right?

[ADIKT]

 jaseandjess said:

I was thinking that maybe you could blow through or suck a old hose and if you cant suck through it then it has a restricter? Would this be right?

I wouldnt suck it... id blow on it...

Pull the vacuum hose off and feel for anything inside.. or if it can be straightened then try look down it... if you dont see/feel anything inside it then you will be able to replace it.

Might be an easier way

[Guest]

hahaha Yeah I could imagine the crap in ya mouth. Might get the missus to suck on it

[nztintin]

use re-enforced silicone,i had some cheap vac hose i used and the car ran like crap cause when it got hot the vac would suck the hoses closed. not good if the vac booster for the brakes does that!

[subi4snow]

 ADIKT said:

I wouldnt suck it... id blow on it...

Pull the vacuum hose off and feel for anything inside.. or if it can be straightened then try look down it... if you dont see/feel anything inside it then you will be able to replace it.

Might be an easier way

I've found at least one with a restrictor, can you replace these but transfer the restrictor into the new hose somehow or does it just have to stay standard? I'm a complete noob when it comes to this as I wouldn't even know what the restrictor pills look like until I cut a hose open and I dont wanna do that unless I can replace it obviously...

[Scoobydoo]

Yes you can replace the hose as long as you put the restrictor in. Hose is only hose after all. You need to make sure the new hose has the same ID of course, otherwise you might lose it inside your engine!

[subi4snow]

 Scoobydoo said:

Yes you can replace the hose as long as you put the restrictor in. Hose is only hose after all. You need to make sure the new hose has the same ID of course, otherwise you might lose it inside your engine!

Are they simple enough to put into the new hoses? Assuming i just cut into the old hose to get the pill and then start pushing it in the end of the new hose till its roughly where it was in the old one? Also are these restrictor pills directional?

[ADIKT]

 subi4snow']

[quote name='Scoobydoo said:

Yes you can replace the hose as long as you put the restrictor in. Hose is only hose after all. You need to make sure the new hose has the same ID of course, otherwise you might lose it inside your engine!

/quote]

Are they simple enough to put into the new hoses? Assuming i just cut into the old hose to get the pill and then start pushing it in the end of the new hose till its roughly where it was in the old one? Also are these restrictor pills directional?

I beleive they are directional someone correct me if im wrong. Shouldnt really matter where in the hose its goes....

[Guest]

From what I googled they are directional Just put them in same way you pulled out.

[Stoffa]

Use cable ties on everything you replace, especially turbo/map hoses

[boon]

Some are a restrictor pill, they just look like a bead with a tiny hole in the middle. The direction of these doesn't matter.

Some, like the brake booster hose, have a 1-way valve in them that will only allow vaccuum, not boost... otherwise when you got on the boost you could pressurise your brake booster and that would be rather unfortunate. These have to be the right way around.

[subi4snow]

Can anyone indicate which hoses may have pills or valves in them? Because have replaced two and not found any but not 100% sure what I'm looking for, would you feel them through the wall of the factory hose or do you have to slit the length of the hose and look for them?

[subi4snow]

 Stoffa said:

Use cable ties on everything you replace, especially turbo/map hoses

Yip definitely doing that!

[dubbedup]

 subi4snow said:

Can anyone indicate which hoses may have pills or valves in them? Because have replaced two and not found any but not 100% sure what I'm looking for, would you feel them through the wall of the factory hose or do you have to slit the length of the hose and look for them?

Bring it over when your near my place (lieth valley) and ill point them out

[subi4snow]

 dubbedup']

[quote name='subi4snow said:

Can anyone indicate which hoses may have pills or valves in them? Because have replaced two and not found any but not 100% sure what I'm looking for, would you feel them through the wall of the factory hose or do you have to slit the length of the hose and look for them?

/quote]

Bring it over when your near my place (lieth valley) and ill point them out

I live near North D pizzahut so can pop over any time your free...

[dubbedup]

You busy sat morning?

[subi4snow]

 dubbedup said:

You busy sat morning?

Nah, got study to do for exams but looking at hoses shouldn't take too long would it?