BLOCKED VACUUM HOSES on R33 GTST HELP PLZ!!!!!!

[85URK]

hi guys another q's i need to findout, im looking at a skyline r33 gtst to buy, and i had an inspection done on it, and it had these things wrong with it, hicas isnt working, but i dont know if the dash light is on or not, i havent been to see the car since the inspection, and blocked vacuum hose from the inlet manifold, has any1 got an idea on why the hose could be blocked, is it becoz it isnt needed an sum1 has just blocked it off, or its clogged up with something??? what does this pipe do anyway. thanx for your help pplz. any info will be appreciated. 85URK!

:Paranoid:

[Trust33]

Usually when a plenum hose is blocked off i would have thought that it was oil catch can related.As some people see blocking off this hose is a good thing.Yes it stops the air from your plenum escaping into the rocker cover giving you a higher plenum psi rating.But then it is not such a good thing because the rocker cover has no way of quickly ventilating the oil vapour from the head to the oil catch can.I think it is what is called vapor lock that occurs when there is no air helping it to escape.Yes you need it stock when doing an oil catch can.

I say that he has been missinformed about the fact that doing this to you car will give it more power.

And when you say hicas isnt working then what does that mean?has he removed it alltogether.Or has he locked it with a hicas locking bar or a tomei hicas lock kit?

[85URK]

as far as i know he hasnt locked it with a bar, and its till there, but i was told that it wasnt working, its a new import about 3mnths ago, and guy who owns it is an older type guy, and doesnt race or anything like that, hes done 4000km since he imported it. but i dont even know if he knew about these things?? how would you find out if it has a hicas lock bar?? anyway

[85URK]

there is no oil catch can on the engine either, but u think it mite of had 1 previous to import?? and they have just taken it off and blocked the hose?? where does the hose connct to on a standard car anyway??

[Trust33]

hi i dont know what you are talking about.Heres a pic of the hose that runs from the plenum to the rocker cover.Its a pcv one way valve that only allows the air to flow from the plenum to rocker cover..

Here is a link to a thread on all you will need to know about the different types of ways to connect up a oil catch can from street to race legal to illegal on the street. oil catch cans

Hope this answers some of your questions.As for the hicas lock i dont have a pic of it but it may be that you have a tomei hicas electronic lock kit,a little black box that when installed in the boot dissables the hicas it comes with shims to lock the steering mechanism in place,you could easily find somthing on here by using the search button..

[85URK]

ok no worries thanx for your help. i will do a bit of research on these things anyhow, just thought id ask around on here first and see if any 1 else knew .

[The Dan]

I didn't think that was a vacuum hose. He may be talking about the Charcoal Canister hoses or some other pollution gear related vacuum hose. Where does it go from and to. With the Hicas, check the fuse and check that the motor(under car) is still plugged in. Usually they disconnect them overseas.