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Common Vacuum Leaks

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Old 08-22-2009, 12:27 AM
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Question Common Vacuum Leaks

My 95 seems to have a vacuum leak somewhere. I just can't seem to find it at all. I have tried spraying carb. cleaner to find it but I haven't had any luck. It's really bugging me. What are some common places for a 95 to have a leak?


My truck seems to switch from a/c to defrost when I accelerate hard and when I'm in a lower gear it seems to vibrate (feels like its towards the rear). Any help would be great. Thanks
Old 08-22-2009, 05:37 PM
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Check all the intake hoses, intake gaskets, brake booster hoses, PCV hoses/valve, EGR hoses, etc. If you can't find the leak take it to a shop with a smoke tester.
Old 08-22-2009, 11:31 PM
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Thanks! I know that there could be so many things that it could be exactly. Is it possible to be something internally?
Old 08-23-2009, 09:33 PM
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all the hoses that seem cracked and old just replace them...it might just be a **** ton of small pinholes all over..
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Old 08-23-2009, 09:52 PM
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Did you check to see if your brake booster is leaking?
Old 08-24-2009, 05:11 AM
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Check the vaccuum lines under the battery or where it goes thru the firewall. Lines either rott out or crack at those places.
Old 03-18-2023, 07:33 PM
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Check out https://www.ford-trucks.com/forums/1...l#post18573439, That seems to be the first vacuum line to decay. It was causing me p0171/2, and p0173/4 codes and poor starting.
Old 03-20-2023, 09:48 PM
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You're digging up ancient threads for no reason. This one has been dead 14 years. If he hasn't figured it out by now, that link isn't gonna help him.



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