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Author Topic: Help needed with the carburettor  (Read 4103 times)
MarkoH
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« on: January 31, 2010, 04:39:32 PM »
Hi guys!

I have a question. I have just dissembled the carburettor (WEBER 34 ADF) and I noticed that there is one inlet / outlet plugged with a hose & bolt. Seems, that this is outlet for vacuum air because the hole leads to the carburettor leg and takes vacuum from the inlet manifold.

My first and easy question is, that what it is? The other and maybe more difficult question is, that why it is plugged?
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Marko Hannula
Mynamaki, Finland

Fiat Ritmo Abarth 130 TC -86
Ford Sierra RS Cosworth -86
jasonh131
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« Reply #1 on: January 31, 2010, 05:29:43 PM »
On mine its to the airfilter pan so will be atmospher not vacuum , problery had a k/n type filter on it  so not needed .
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On my 6 th 131 now Goldy
djape1977
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« Reply #2 on: January 31, 2010, 06:45:15 PM »
same thing on mine with K&N, but it's not plugged and it works fine. just draws air from engine bay
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get a bigger hammer!
MarkoH
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« Reply #3 on: February 01, 2010, 09:18:55 AM »
Thanks guys! Again we have proved that all you need is not JVC - it's 131mirafiori.com!

Marko
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Marko Hannula
Mynamaki, Finland

Fiat Ritmo Abarth 130 TC -86
Ford Sierra RS Cosworth -86
Thotos
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Theo Kyriacou


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« Reply #4 on: February 01, 2010, 11:08:05 AM »
Quote from: djape1977 on January 31, 2010, 06:45:15 PM
same thing on mine with K&N, but it's not plugged and it works fine. just draws air from engine bay

I would think it's better to have this blocked off or connected to the crankcase breather somehow than suck in air and dirt from the engine compartment. Does it not mess up the idling mixture? A valve on the carburettor throttle spindle will block off this air intake as the throttle opens. See other post at http://131mirafiori.com/smf/index.php?topic=3106.msg23553#msg23553 where this pipe is also discussed.
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Theo Kyriacou
Enfield, UK
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