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CFI air intake explained please 

 

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 Post subject: CFI air intake explained please
Posted: Mon Sep 07, 2009 11:03 am 
Parts Gopher
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Posts: 89

Joined: 20th May 2009

Ride: EB 91 now with mpfi

Location: wodonga
VIC, Australia

Hi
Can anyone explain the correct function of the " butterfly valve" inside the air intake housing on the CFI EA/EB motors? and its association with the heating tube from the exhaust. Mine seems to be open all the time and not sure when its supposed to be shut.
Thanks
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 Post subject: Re: CFI air intake explained please
Posted: Tue Sep 08, 2009 4:48 pm 
Parts Gopher
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Age: 56

Posts: 82

Joined: 31st Aug 2007

Ride: 98 EL GLI

Location: Adelaide
SA, Australia

If it's what I think you mean. The idea of the flap is that when the engine is cold it shuts in such a way that air is drawn thru from the cover on exhaust manifold, putting the warm air into the engine. The idea behind it is more than likely to help stop exhaust pollutants when the engine is cold, or to make the engine run better when cold. Not sure. When then engine warms up the flap moves drawing cold air from the snorkel from the front of the car. They rarely work anyway, and as long as the intake of air is from the snorkel above the radiator it's ok.
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 Post subject: Re: CFI air intake explained please
Posted: Wed Sep 09, 2009 10:19 am 
Parts Gopher
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Posts: 89

Joined: 20th May 2009

Ride: EB 91 now with mpfi

Location: wodonga
VIC, Australia

thanks mate
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