Nothing surprises me anymore. The hose will reduce pressure inside the
engine and act as a vacuum to reduce pumping losses. You may also blow more
oil through the seals, especially the rear seal w/o the hose being
connected.
Mike
----- Original Message -----
From: "Long, Robert" <Robert.Long@acs-inc.com>
To: "'Roadster List'" <datsun-roadsters@autox.team.net>
Sent: Tuesday, June 04, 2002 10:46 AM
Subject: Overheating question
> Roadster fans,
>
> The other day, my 67.5 1600 was running hot, but not pegging out. It
seems
> that I had left the hose from the valve cover to the air cleaner
> disconnected. Once
> I reconnected it, back to normal temp.
>
> Why would this make my car run so hot?
>
> Thanks again...Robert - 67.5 1600 - Abq
>
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