Evaporative canister connections

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Dec 11, 2006 | 10:20 AM

Cobaltblue 72

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From: San Diego California

Evaporative canister connections

I am in the process of upgrading the evaporative system on my 72. The canister has 4 nozzles, 3 on the top and one at the bottom. The top three are marked, fuel tank, carb, PCV. Can one of the vacccum connectors be plugged, namely the PCV? I don't have PCV on my engine, rather I have two filter breather elements. Second question, What is the function of the connector on the bottom of the canister?

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Dec 11, 2006 | 10:31 AM

Jims79

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From: Jersey Shore Exit 98

Quote:

Originally Posted by Cobaltblue 72

Yes. I plugged all mine except for the fuel tank. It keeps the smell of gas down in the garage.

Dec 11, 2006 | 02:49 PM

Cobaltblue 72

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Does any one know the function of the carb nozzle on the evaporative can? Is it for vaccum \ or a vapor line from the carb to the charcoal cannister?

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Dec 11, 2006 | 05:09 PM

shafrs3

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The carb nozzle is there to supply vacuum to open a valve on the canister allowing the vapors to be drawn into the engine. The PVC connection is the vapor passage to the engine.

Dec 12, 2006 | 01:12 AM

7T1vette

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From: Crossville TN

The PCV system will keep oil vapors out of the engine compartment better than the filters you have. If it were me, I would put the PCV valve back in and run it to the inlet tube on your Q-Jet (center-front of carb at the base) even if you don't route the evap cannister tube with it.

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