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Vacuum suction through Oil Filler on AU 5L 

 

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 Post subject: Vacuum suction through Oil Filler on AU 5L
Posted: Tue Mar 19, 2013 12:53 pm 
Oompa Loompa
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Posts: 33

Joined: 21st Oct 2006

Location: Sydney
NSW, Australia

Hi,

I have an AU 5L. I unscrewed the oil filler cap and noticed a hissing sound. Upon further checks, I found that it was suction and not blow (phew).

Is this normal? If not, what can cause it.

Also the tee of from the filler neck is connected to my Gas Converter for vacuum. Is this also correct?

Thanks,
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 Post subject: Re: Vacuum suction through Oil Filler on AU 5L
Posted: Wed Mar 20, 2013 7:41 pm 
Fordmods Newbie
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Joined: 24th Nov 2012

Ride: XR8 ute

Location: Melbourne
VIC, Australia

I'd say your PCV valve is stuck open.
Crimp the hose from the valve to the inlet manifold, if the valve is indeed stuck open the suction should disappear.
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 Post subject: Re: Vacuum suction through Oil Filler on AU 5L
Posted: Wed Mar 20, 2013 7:56 pm 
Moderator
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Location: a shit suburb in sydney
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it should have some vacuum at idle, as the pvc will be open with manifold vacuum sucking oil vapours from the crank case..
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 Post subject: Re: Vacuum suction through Oil Filler on AU 5L
Posted: Wed Mar 20, 2013 8:06 pm 
Getting Side Ways
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VIC, Australia

it's normal to have some vacuumn there, most cars will.

Gab
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 Post subject: Re: Vacuum suction through Oil Filler on AU 5L
Posted: Thu Mar 21, 2013 9:56 am 
Oompa Loompa
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Joined: 21st Oct 2006

Location: Sydney
NSW, Australia

Hi,

Thanks for the replies so far.

I have tried to locate the PCV valve and was not succesful. Any hints as to where it could be hiding?

Regards,
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 Post subject: Re: Vacuum suction through Oil Filler on AU 5L
Posted: Wed Feb 12, 2014 8:29 pm 
Oompa Loompa
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Posts: 33

Joined: 21st Oct 2006

Location: Sydney
NSW, Australia

Hi all, I have finally found the PCV valve using the attached diagram.

However, even upon removing the PCV valve, the extreme suction still exists. I will try attache a video showing exactly what happens.

 

 

Attachments:
Windsor Inlet Diagram.gif
Windsor Inlet Diagram.gif [ 161.36 KiB | Viewed 72 times ]
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