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Vacuum leak testing 

 

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 Post subject: Vacuum leak testing
Posted: Tue Jul 31, 2012 11:56 am 
Oompa Loompa
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Ride: Ford EL

Location: Hunter Valley
NSW, Australia

Anyone know of a reliable place with a vacuum leak smoke testing machine in the southern suburbs of Sydney or nearby?
I have a turbo sounding whine noise kick in around 2.5k rpm under load.
I wanna get all vacuum leaks repaired before dyno tuning.
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 Post subject: Re: Vacuum leak testing
Posted: Tue Jul 31, 2012 12:01 pm 
Fordmods Junkie
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Ride: EL Fairmont, VFR400 racer

Power: 144 rwkw

Location: Melbourne
VIC, Australia

Just spray some carby cleaner around the bay...if the revs pick up as you spray at a certain location, then you found the issue.

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: Vacuum leak testing
Posted: Tue Jul 31, 2012 4:20 pm 
Oompa Loompa
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Ride: Ford EL

Location: Hunter Valley
NSW, Australia

my vacuum leak only happens under load ie. while driving.
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 Post subject: Re: Vacuum leak testing
Posted: Tue Jul 31, 2012 6:24 pm 
Fordmods Junkie
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Ride: EL Fairmont, VFR400 racer

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Location: Melbourne
VIC, Australia

fitz wrote:
my vacuum leak only happens under load ie. while driving.


...pretty sure if you have a vacuum leak, it will be there even at idle...unless it is a vacuum switching mechanism and all I can think off that requires vacuum to operate, your air vent controlling mechanisms (Climate control), heater tap, break booster, BBM switch and PCV at the rocker cover.

You sure it's a vacuum leak?

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: Vacuum leak testing
Posted: Wed Aug 01, 2012 11:26 pm 
Parts Gopher
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Ride: ba fairlane ghia

Location: loftus
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fitz wrote:
Anyone know of a reliable place with a vacuum leak smoke testing machine in the southern suburbs of Sydney or nearby?
I have a turbo sounding whine noise kick in around 2.5k rpm under load.
I wanna get all vacuum leaks repaired before dyno tuning.


as the revs go up the vacum goes down my mates old taxi done that he thought it was nomal as 3 other el`s done it
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 Post subject: Re: Vacuum leak testing
Posted: Wed Aug 01, 2012 11:27 pm 
Parts Gopher
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Age: 26

Posts: 78

Joined: 20th Jul 2011

Ride: ba fairlane ghia

Location: loftus
NSW, Australia

fitz wrote:
Anyone know of a reliable place with a vacuum leak smoke testing machine in the southern suburbs of Sydney or nearby?
I have a turbo sounding whine noise kick in around 2.5k rpm under load.
I wanna get all vacuum leaks repaired before dyno tuning.


as the revs go up the vacum goes down my mates old taxi done that he thought it was nomal as 3 other el`s done it
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 Post subject: Re: Vacuum leak testing
Posted: Fri Aug 03, 2012 11:01 am 
Oompa Loompa
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Joined: 14th Mar 2010

Ride: Ford EL

Location: Hunter Valley
NSW, Australia

brake booster let go this morning. half the normal brake power and idling higher than usual.
culprit found.
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 Post subject: Re: Vacuum leak testing
Posted: Fri Aug 03, 2012 11:15 am 
Fordmods Junkie
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Joined: 17th May 2005

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Ride: EL Fairmont, VFR400 racer

Power: 144 rwkw

Location: Melbourne
VIC, Australia

fitz wrote:
brake booster let go this morning. half the normal brake power and idling higher than usual.
culprit found.


Good to hear.

You're the second person to have one brake in recent times...I think EF/EL boosters are on their way out. Mine broke last year.

 

_________________

phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: Vacuum leak testing
Posted: Fri Aug 03, 2012 11:55 am 
Getting Side Ways
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Location: Melbourne
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My mate just had to replace the booster in his EB Ghia 5L, those dual diaphragm ones are hard to find, I'm lucky I haven't had one go yet. Vacuum will always go down with increased revs, that's a basic function of how an engine works.

Gab
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 Post subject: Re: Vacuum leak testing
Posted: Fri Aug 03, 2012 12:23 pm 
Oompa Loompa
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Posts: 38

Joined: 14th Mar 2010

Ride: Ford EL

Location: Hunter Valley
NSW, Australia

the noise of the leak only happened under load at revs above 2.5k rpm while driving. The higher the revs the more noise and higher pitch just like a turbo sound.
not while idling, not while revving in park/neutral.
Im not rewriting the books here. Just stating the facts.
feel free to comment on what turbos should sound like.
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