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Old 04-24-2010, 01:33 AM
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quadrajet question

so i have a quadrajet carb that came from a car and im putting it on a truck that has a little bit different setup. there are 2 vacuum lines that are not needed for the truck and i dont know if i should leave them open or cap them off.
it seems to run fine ether way.

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Old 04-24-2010, 02:08 AM
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You NEVER leave unused vacuum ports open. This is inviting disaster if they happen to pull vacuum off idle which will make the engine run lean and could lead to other failures that will lead to expensive repairs.
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Old 04-24-2010, 10:51 AM
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yeah thats what i was thinking. and it would be pulling unfiltered air into the engine....


thanks for the help!
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