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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

1970 crank case ventilation

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Old Mar 9, 2023 | 10:05 PM
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1970 crank case ventilation

Got a 1970 F100 as a project truck. Currently there is two hoses from the top of valve cover. One is attached to the oil filler cap and is connected to the air filter housing venting before the air filter. The second hose passes through the PCV valve and is connected to the intake manifold just below the carburetor..

Wondering if this is correct... just looks odd.



 
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Old Mar 9, 2023 | 11:53 PM
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From: COSMOS
My V-8 has PCV in the oil filler cap which has a hose going to the intake manifold .This is on valve cover on the right side .
Left side valve cover has a plastic tube that has a hose connected to it going to the air filter housing connection of a small filter inside the filter housing . If you have 2 on 1 valve cover you must have a 6 cylinder.......
 
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Old Mar 9, 2023 | 11:55 PM
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Originally Posted by JD-35242
Got a 1970 F100 as a project truck. Currently there is two hoses from the top of valve cover. One is attached to the oil filler cap and is connected to the air filter housing venting before the air filter. The second hose passes through the PCV valve and is connected to the intake manifold just below the carburetor..

Wondering if this is correct... just looks odd.

Odd but probably correct if one is on each end of the I6 valve cover, or on opposite valve covers for a V8.
 
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Old Mar 10, 2023 | 05:51 AM
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Crankcase vent

Originally Posted by JD-35242
Got a 1970 F100 as a project truck. Currently there is two hoses from the top of valve cover. One is attached to the oil filler cap and is connected to the air filter housing venting before the air filter. The second hose passes through the PCV valve and is connected to the intake manifold just below the carburetor..

Wondering if this is correct... just looks odd.
Exactly the same on my '72 with a 360!
 
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