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Old 08-22-2020, 10:33 AM   #2
78F350
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Join Date: Jul 2014
Location: Oklahoma
Posts: 3,889
Garage
If a vacuum hose is brittle, replace them all. Clean the throttle body, check the AOS hoses to make sure they are not cracked and connections are fully seated. Be careful of the oil filler and dipstick hoses - they are often brittle.
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