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140/164 Series General Forum for the Volvo 140 and 164 cars |
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Oil breather 164Views : 929 Replies : 1Users Viewing This Thread : |
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May 2nd, 2018, 21:19 | #1 |
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Last Online: Aug 8th, 2022 08:27
Join Date: Sep 2017
Location: Darlington
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Oil breather 164
Hi I have a 1970 164 could any one tell me if or where any oil breather pipes are as I Cant seem to see any or how to check the crankcase ventilation system to check for blockages thanks
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May 2nd, 2018, 23:29 | #2 |
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Last Online: Feb 3rd, 2019 05:24
Join Date: Sep 2006
Location: All alone in the crazy city
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There's not a lot
This isn't mine, it's a picture I grabbed off the internet because I cba to go taking photos at this time of night... the relevant pipes are highlighted in groovy and psychedelic colours. The green one is the "inlet", running from the air filter box to the top of the rocker cover. They don't all have it - the oil filler cap allows air in instead. The purple one is the "outlet", connected to the manifold, using manifold depression to suck fumes out of the crankcase. The other end of it connects to a little tin box on the side of the block, which is a chamber to let suspended oil drop out of the airflow rather than being carried over into the intake. It has a restriction in it to stop it letting too much air through and ruining the idle mixture; IIRC this is the narrow bore of the connection to the manifold. Bits that might get gunked up: that narrow bore, the tin box, the mesh inside the oil filler cap - ie, nothing that'll take any harm from being left to soak in a bucket of petrol. |
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