Leaking Hose

Wanted the medium diameter hose with protective shrink wrap on, This is situated next to Turbo heat shield passes by top turbo oil supply pipe, goes to the cylindrical thing (left hand rocker cover) then via another medium sized pipe to the LHS intercooler Plenum. Mine is hissing, I am assuming its leaking and not the norm.(':(') P.S the correct name for the pipe and cylindrical thing would be handy.

Wanted the medium diameter hose with protective shrink wrap on, This is situated next to Turbo heat shield passes by top turbo oil supply pipe, goes to the cylindrical thing (left hand rocker cover) then via another medium sized pipe to the LHS intercooler Plenum. Mine is hissing, I am assuming its leaking and not the norm.(':(') P.S the correct name for the pipe and cylindrical thing would be handy.

Correct name for pipe would be Pipe The cylindical thing is the Idle air valve .Any bit of old pipe would do methinks .

reference to unknown parts by page and item number in the parts manual could help some one help you to know what you are talking about.
or even a picture?

Thats a bad hose to go.....if you loose all pressure your throttle will stay fully open and you will have no servo on the brakes...its a bit scary! Happened to me when mine popped off on the Isle of Man this year...doing about 70 round a bend on a sprint!!!!
Any old pipe will do....its just a vacuum hose.

[Alpineandy]

Happened to me when mine popped off on the Isle of Man this year...doing about 70 round a bend on a sprint!!!! .

You didn't mention this before (did you?), What did you do?

Any old pipe will do....its just a vacuum hose.

I thought that if it's a vacuum hose It needs to be strong enough not to collapse under vacuum ... Doesn't it?

The pipe came loose where it goes into the inlet plenum and popped out under boost! You should check the unions. I used a thread lock type glue to lock it in place.....the end onto the inlet plenum on mine was just a bit of brass pipe with no threads....only friction appeared to be holding it in!
When I said any old piece of pipe....I think you'll find any pipe that diameter will have thick enough walls to hold the vacuum.

Cheers Peter.
Will be replacing pipe ASAP.
I wonder if this is why my brakes have felt naff from time to time.
Dave.

Do not replace pipe with any old pipe of correct diameter.
replaced mine with general purpose thick strengthened pipe, looked good until it became hot.
The walls then collapsed under the vacuum.
Have since refitted original pipe with brass pipe in center.
Until I order correct pipe.

When I said any old piece of pipe....I think you'll find any pipe that diameter will have thick enough walls to hold the vacuum.

i rest my case again.

when will people learn to leave their cars to people who are trained and know what they are talking about and doing?

drives me mad!

please do not wait until someone has a crash................

Thats a bad hose to go.....if you loose all pressure your throttle will stay fully open and you will have no servo on the brakes... <snip>.

Not *quite*.... This is the throttle bypass with active valve to control idlespeed. However the 'ole is certainly big enough to have the effect of a partially open throttle (actually when you floor the throttle, the idlespeed system *should* open the valve all the way providing extra air). The brake servo should have a non-return valve so it will allow you to stop at least once if this happens (if it didn't have a non-return valve, left-foot braking would be a bit of a challenge when under boost!

Here's a little story for you to giggle at. The DeLorean's AC system (vent flaps) are all vacuum operated. Big dial in centre, distributes engine vac to whatever diaphragm needs to open a flap to put air on your feet, or your face etc etc etc. Very reliable even after 25 years except the switch itself. ANYWAY, on the Legend Twin Turbo prototypes, they forgot about this being there and neglected to install a non-return valve. The result was that as soon as the engine came on boost, all the vent flaps in the dashboard symultaneously shut with a collection of loud thuds.

Well I thought it was funny......

Not *quite*.... This is the throttle bypass with active valve to control idlespeed. However the 'ole is certainly big enough to have the effect of a partially open throttle (actually when you floor the throttle, the idlespeed system *should* open the valve all the way providing extra air). The brake servo should have a non-return valve so it will allow you to stop at least once if this happens (if it didn't have a non-return valve, left-foot braking would be a bit of a challenge when under boost!

The throttle was fully open with the clutch in....but not with the clutch engaged....it was a bit of a shock when I put the clutch in! As for the servo thing... you will get initial assistance after the servo stops....you do on any car.....but when youre not expecting it its quite scary....Ive been there!

When I said any old piece of pipe....I think you'll find any pipe that diameter will have thick enough walls to hold the vacuum.

i rest my case again.

when will people learn to leave their cars to people who are trained and know what they are talking about and doing?

drives me mad!

please do not wait until someone has a crash................

hospital a a good place to ponder your mistakes but some never learn

Yeah the Stunned monkey is right, when I accelerated the engine the hose went from deflated to inflated as the engine was no longer sucking through the pipe but being force fed.
Anyway I’m of to order or purchase correct item today along with a new battery.

when will people learn to leave their cars to people who are trained and know what they are talking about and doing?

drives me mad!

I disagree completely with the above, so called experts are normal people like you and me and are as prone to mistakes (The main difference being they will charge you for their mistakes). Mistakes are to be learned from and this forum is excellent at highlighting them. As long as you have an aptitude and are mechanically minded, most things are achievable. If you do your own maintenance you are less likely to cut corners.

Have a nice day..!

mechanically minded and mechanically trained are two totally different things