# Rough running

**URL:** <https://community.cartalk.com/t/rough-running/72665>\
**Category:** Maintenance/Repairs\
**Created:** [May 26, 2012, 8:39pm UTC](https://community.cartalk.com/t/rough-running/72665 "2012-05-26T20:39:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![griz](https://avatars.discourse-cdn.com/v4/letter/g/4491bb/32.png) [@griz](https://community.cartalk.com/u/griz)\
**Post date:** [May 26, 2012, 8:39pm UTC](https://community.cartalk.com/t/rough-running/72665/1 "2012-05-26T20:39:23Z")

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will it hurt my 98’ forester to drive it when one cylinder has no compression? They tell me it needs a valve job for 2,500. They already put a mass air flow sensor in, and replaced plugs and wires. Still got the miss, but I need the vehicle. Thanks

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**Author:** ![MTraveler](https://avatars.discourse-cdn.com/v4/letter/m/ccd318/32.png) [@MTraveler](https://community.cartalk.com/u/MTraveler)\
**Post date:** [May 27, 2012, 10:13am UTC](https://community.cartalk.com/t/rough-running/72665/2 "2012-05-27T10:13:28Z")

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This is sort of like asking if it is OK to run on a broken leg. Things will only get worse if you do. Depending on the condition of the rest of the car it may be time to pack it in.

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**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\
**Post date:** [May 27, 2012, 5:24pm UTC](https://community.cartalk.com/t/rough-running/72665/3 "2012-05-27T17:24:34Z")

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Did someone actually test the compression with a gauge? What were the specific numbers, in psi, found in each cylinder?