# Vacuum leak

**URL:** <https://community.cartalk.com/t/vacuum-leak/55008>\
**Category:** Maintenance/Repairs\
**Tags:** nissan, pickup\
**Created:** [September 12, 2010, 4:47pm UTC](https://community.cartalk.com/t/vacuum-leak/55008 "2010-09-12T16:47:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bedrock](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bedrock/32/868_2.png) [@bedrock](https://community.cartalk.com/u/bedrock)\
**Post date:** [September 12, 2010, 4:47pm UTC](https://community.cartalk.com/t/vacuum-leak/55008/1 "2010-09-12T16:47:12Z")

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anyone have a secret on.how to find a vacuum leak.

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**Author:** ![SteveRB](https://avatars.discourse-cdn.com/v4/letter/s/edb3f5/32.png) [@SteveRB](https://community.cartalk.com/u/SteveRB)\
**Post date:** [September 12, 2010, 4:59pm UTC](https://community.cartalk.com/t/vacuum-leak/55008/2 "2010-09-12T16:59:34Z")

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Try using a propane torch, but do not light it. With the engine running, move the tip along the various hoses and when you pass by a leak you should hear the RPM’s increase. Be careful to keep away from moving parts.