32adf vacuum lines 1978

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psg

32adf vacuum lines 1978

Post by psg »

I have to keep all of my emission lines for two more years to pass our state regs. I need some help with the circuits.

Under the fuel inlet towards the bottom is a vent pipe, where does that go?

I have a teed line. The line runs from a electrovalve across the front of the engine to a valve/pot. Where the does the perpendicular line go?

On the underside of air filter coming off the breather tube is a small vent pipe, where does the go?

There are two vent pipes on the manifold, one vent leads to the bottom of the carb by the mixture screw, where does the other go?

Does anyone have pictures or diagrams of the vacuum tube circuits which include the electrovalves? Thanks for any help. Paul
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124JOE
Posts: 3141
Joined: Fri Jun 24, 2011 7:11 pm
Your car is a: 1978 124 fiat spider sport 1800
Location: SO. WI

Re: 32adf vacuum lines 1978

Post by 124JOE »

have you been to brad artigues site he has all sorts of stuff

http://www.artigue.com
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
psg

Re: 32adf vacuum lines 1978

Post by psg »

Yes, but I did not see diagrams or explanations for any of these questions. Did I just miss it all? psg
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124JOE
Posts: 3141
Joined: Fri Jun 24, 2011 7:11 pm
Your car is a: 1978 124 fiat spider sport 1800
Location: SO. WI

Re: 32adf vacuum lines 1978

Post by 124JOE »

no i went poking around there after i posted and didnt find it ether
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
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kilrwail
Posts: 1100
Joined: Wed Mar 04, 2009 6:49 am
Your car is a: 1978 Fiat 124 Sport Spider
Location: Perth, Ontario

Re: 32adf vacuum lines 1978

Post by kilrwail »

The "vent pipe" under the accelerator pump (under the fuel inlet) is connected to the small outlet on the breather tube (your third question) with a semi-transparent plastic tube.

The Perpendicular line off the tee'd fitting (EGR lines) in front of the intake valve cover is connected to the thermoswitch on the intake manifold, which has the second line you mention in your fourth question that is connected to the carb near the mixture screw.

There's a third line connected to the intake manifold near its front, which is connected to a hard line leading across the engine to the rear of the EGR "valve/pot".

Maybe this will help:

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Peter Brownhill

1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor
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manoa matt
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Joined: Thu Oct 26, 2006 4:28 pm
Your car is a: 1978 Fiat 124 Spider 1800
Location: Honolulu, Hawaii

Re: 32adf vacuum lines 1978

Post by manoa matt »

Paul, send me an email ( matt.scarton@gmail.com ) I have some documents for the 32ADFA that show where everything hooks up.

Matt
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