| Valve on air cleaner neck question [message #216139] |
Mon, 29 July 2013 16:20  |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
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Forgive me for what is likely a silly question, but I haven't messed with GM V8's for 30 years and when I did most did not have stock air cleaners. On top of the neck of the air cleaner is a vacuum operated valve. On the lower side is a foil pipe going to the exhaust manifold. The port on the valve is plugged (capped) and there is no trace of vacuum line anywhere.
If memory serves this is designed to draw warm air into the engine when it is warming up. After that is should be open for normal running. Since my coach starts and runs fine, I would assume this is stuck open (cold air) and isn't really necessary and I can leave well enough alone. If this is not the case, please educate me. Thanks.
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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