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5.7 TBI Internal Vac Leak?

katophil
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Jeremy airjer W Grand Master

Jeremy airjer W

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Yup, we see them a lot on the 3.1's as well. Make sure you remove the breather and the PCV valve from the valve covers and then block both holes with fingers. With the engine running there should be no vacuum in the engine.

We also see this on the older Dodge V-8's

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