A very small one?

 

Found 6 boost leaks some on pipes i removed but some on pipes i have not touched.

 

I pressurize the system to 5 bar and there is a very slight hiss from rear of engine! i have moved pipes, removed/refitted pipes and loosened and tightened clips but cannot seem to sort, is this crucial.

 

As i said very small hiss on 5 bar.

 

Dave

5 bar !!!!!.

Fooking hell mate. You're gonna make more boost leaks than you started with. I would say 2 bar pressure is more than enough to find any.

 

Not sure what pipes you need but I have a bunch of Blue silicone on ebay at the moment, excess form the engine dressup.

I was going to say. 5 bar is huge amount. like stu said 2 max.

 

my car boosts at 0.8 of a bar :lol::lol:

Read somewhere on here 5--7 bar thought was a bit high but what do i know i am only a heating engineer:lol:

 

Stu can i ask how crucial is the protection around the twin pops! do i re fit or is/was it prevention better than the cure scenario:confused1:

Edited May 18, 201015 yr by yewcheck

Read somewhere on here 5--7 bar thought was a bit high but what do i know i am only a heating engineer:lol:

 

 

Shouldnt a heating system only be 1.5/ 2 bar :lol::lol:

Shouldnt a heating system only be 1.5/ 2 bar :lol::lol:

 

Not when i fit them:clap::tt2:

 

Not fitting any more [wonder way:lol:] stuck in the office in front of the phone which is not ringing any more and a computer........thank god for this site:punk:

you shouldnt go above 5psi... be prepared for lots of oil leaks now!

you shouldnt go above 5psi... be prepared for lots of oil leaks now!

 

Just fixed a load.. never went over 5 bar! where would the leaks start from :headvswal

Edited May 18, 201015 yr by yewcheck

Just fixed a load.. never went over 5 bar! where would the leaks start from :headvswal

 

i think you are confusing psi and bar...

 

5 bar is over 70 psi! granted during normal operation you may boost higher than 5psi but in normal operation the oil pressure on the other side of the seals is alot higher. 5 psi is the recommended max pressure testing figure to avoid blowing seals. leaks could start from any oil seal in the engine...

Do you have a boost leak detector and a compressor :P Mine has a leak somewere and i cant find it :(

I am lucky enough to have a shut off valve that you can control the inlet pressure, then shut off the supply to it from the airline/compressor and watch and see if the pressure drops. Spray the pipes with soapy water and normally you can see the bubbles forming at the leaks, but if its that bad a leak it wont hold the pressure and in some cases when I have used it, the pressure hardly registers. I use this on inlets of trucks n buses I work on and had intended using it on my car as I had a boost leak but its getting broken for spares. Normally i'd pressureise it to about 0.5 bar to 1.0 bar.

 

Cheers John

Not when i fit them:clap::tt2:

 

Not fitting any more [wonder way:lol:] stuck in the office in front of the phone which is not ringing any more and a computer........thank god for this site:punk:

 

classic :lol::lol:

Do you have a boost leak detector and a compressor :P Mine has a leak somewere and i cant find it :(

 

Yes mate:thumbup1:

i think you are confusing psi and bar...

 

5 bar is over 70 psi! granted during normal operation you may boost higher than 5psi but in normal operation the oil pressure on the other side of the seals is alot higher. 5 psi is the recommended max pressure testing figure to avoid blowing seals. leaks could start from any oil seal in the engine...

 

What a ****er i am you are right Joel i ment psi:yes:

Sooooooo back to my original question adding 5 PSI and getting a little hiss is this crucial or not?

The protection around the twin pops.

 

Unless additional protection was implemented after me, I only know about the splash panels under the engine (which I think may have been removed by the next owner to me) and the perspecx plate under the headlight panel.

 

The problem with the Doolz is that it's big and sticks out. You need to protect it from moisture. Because if it gets a little bit of moisture in it you will find it hard to start after a rainy day and also you'll be in the situation where it doesn't idle and won;t rev above 3krpm. This is due to the maf sensing water in the air and getting confused.

 

Now was it PSI or BAR.

1 Bar = 14.5 psi

The protection around the twin pops.

 

Unless additional protection was implemented after me, I only know about the splash panels under the engine (which I think may have been removed by the next owner to me) and the perspecx plate under the headlight panel.

 

The problem with the Doolz is that it's big and sticks out. You need to protect it from moisture. Because if it gets a little bit of moisture in it you will find it hard to start after a rainy day and also you'll be in the situation where it doesn't idle and won;t rev above 3krpm. This is due to the maf sensing water in the air and getting confused.

 

Now was it PSI or BAR.

1 Bar = 14.5 psi

 

Perspex is still there and beneath that a little bit of cardboard stuck together, i better replace as was then mate.

 

Thanks for your help again, by the way another dopey question following on from the amp problem, how do i check earth resistance on the multimeter??

 

Dave

Not sure what the cardboard is there for???. That's just goingto get wet and go soggy.

 

There is a resistance setting on the multi meter. You can turn the setting to that and then you can put one end of the connector on the earth terminal (with the earth still attached) and another on an earthing point on the car. It should read 0 if it reads anything different thenthe amp is not earthed out correctly.

Is it worth me doing a boost leak test on mine, even though there are no running problems at the mo? just for peace of mind?

Is it worth me doing a boost leak test on mine, even though there are no running problems at the mo? just for peace of mind?

 

absolutely... even if it is running well it could run even better :)

 

as for the answer to the question i wouldn't put off using the car for a slight hiss but its something you should look into. as mentioned, get some leak detector (or just use soapy water) to track down where it is coming from.