Help needed

[T5frankie]

I have today just developed a boost leak, it wont boost over 14 psi (1 bar) you can hear it hissing under the engine bay and gets louder as the revs and boost rises, but can i see where its coming from? can i §§§§, any ideas? am really looking forward to pod but can't use it as it is

[stribo]

Wind the actuator so the wastegate's permanently open, no boost, no boost leak. As you've got all new hoses, check the clips, but I'm sure you have, could well be the intercooler.

[smithy]

I have today just developed a boost leak, it wont boost over 14 psi (1 bar) you can hear it hissing under the engine bay and gets louder as the revs and boost rises, but can i see where its coming from? can i §§§§, any ideas? am really looking forward to pod but can't use it as it is

Get a smoke test done ASAP .somewhere like jams port should have that or go to hlm and they have got that too.it will show you any boost leaks you have .also ask turbo technics they might have one

[T5frankie]

Get a smoke test done ASAP .somewhere like jams port should have that or go to hlm and they have got that too.it will show you any boost leaks you have .also ask turbo technics they might have one

not really got time to do any of that before saturday especially since i have to do a full days work tomorrow, best not be the intercooler its not a standard one

[smithy]

not really got time to do any of that before saturday especially since i have to do a full days work tomorrow, best not be the intercooler its not a standard one

The is another way .what you can do is get it on a ramp or some strong stands and chock the car .and get the car into third gear and put the car under pressure low down so 2.5k and then get a skirty bottle with water and spray the joints every where to look for the leak mate .

[T5frankie]

The is another way .what you can do is get it on a ramp or some strong stands and chock the car .and get the car into third gear and put the car under pressure low down so 2.5k and then get a skirty bottle with water and spray the joints every where to look for the leak mate .

the car isnt under load when you do that so produces no boost at all (ive just tried on my axle stands)

[smithy]

the car isnt under load when you do that so produces no boost at all (ive just tried on my axle stands)

Yes it is aslong as you use low gear and you only need to produce anothe boost to find a leak not 28psi lol

[T5frankie]

Yes it is aslong as you use low gear and you only need to produce anothe boost to find a leak not 28psi lol

mate ive just done it and nothing happened, looks like ill be taking the sierra

[smithy]

mate ive just done it and nothing happened, looks like ill be taking the sierra

Is it coming from the front or back also check for a split on the turbo to intercooler coupling on top of the turbo too.mune split there too on the v70.

[T5frankie]

Is it coming from the front or back

??????? from under the bonnet lol, it was alright until i put the mbc on today

[smithy]

??????? from under the bonnet lol, it was alright until i put the mbc on today

Put some fairy liquid on the joints and go for a drive then see if you have leaks

[Nealevo]

Change it back to BCS and try that ??

[T5frankie]

Change it back to BCS and try that ??

did mate still leaking, the extra boost has forced the leak now so same with or without bcs

[T5frankie]

Put some fairy liquid on the joints and go for a drive then see if you have leaks

i have many many joints cos the way i have done my pipework

[graemewelch]

have you fitted jubilee clips or mikalor. might be a dodgy clamp

[merc85]

Spray Brake cleaner around suspect joints and hoses, the rev's will pick up when it gets sucked in, Check the Hose from iac valve to the vac tree, one on the end of the intake manifold.

[craigoodwood]

block up both ends of the boost system and drill a hole in a solid pipe big enough for a screw in tyre valve and inflate to required psi, thats what i was gonna do with the black ally pipe i was gonna have off ya....

[T5frankie]

have you fitted jubilee clips or mikalor. might be a dodgy clamp

all mikalor mate

[T5frankie]

Spray Brake cleaner around suspect joints and hoses, the rev's will pick up when it gets sucked in, Check the Hose from iac valve to the vac tree, one on the end of the intake manifold.

its a boost leak not a vac leak as you can really hear it hiss

[T5frankie]

block up both ends of the boost system and drill a hole in a solid pipe big enough for a screw in tyre valve and inflate to required psi, thats what i was gonna do with the black ally pipe i was gonna have off ya....

only pipe is the rip pipe over the top on mine now