# Infinity '93 vibrates

**URL:** <https://community.cartalk.com/t/infinity-93-vibrates/20860>\
**Category:** Maintenance/Repairs\
**Created:** [October 18, 2008, 1:51pm UTC](https://community.cartalk.com/t/infinity-93-vibrates/20860 "2008-10-18T13:51:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gretchen\_C](https://avatars.discourse-cdn.com/v4/letter/g/90ced4/32.png) [@Gretchen\_C](https://community.cartalk.com/u/Gretchen_C)\
**Post date:** [October 18, 2008, 1:51pm UTC](https://community.cartalk.com/t/infinity-93-vibrates/20860/1 "2008-10-18T13:51:57Z")

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My Infinity '93 sedan vibrates at idle and also at various speeds. There are no service message lights. Mechanic says there is spark and fuel at idle on all cylinders, except 2 cylinders have no compression. He suggested may be camshaft, but would be costly to even find that out. Any ideas?

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**Author:** ![Manolito](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/manolito/32/3070_2.png) [@Manolito](https://community.cartalk.com/u/Manolito)\
**Post date:** [October 18, 2008, 5:24pm UTC](https://community.cartalk.com/t/infinity-93-vibrates/20860/2 "2008-10-18T17:24:20Z")

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Your mechanic’s theory sounds reasonable. I would think that a definitive diagnosis of low compression could be obtained for about $100 of shop time. It involves a compression and leak-down test where they check to see where the leaking air is going (intake/exhaust/or crankcase). If it is not leaking anywhere, then the problem is a cam.

The trouble is that most problems that cause low compression will cost more to fix than you would likely be willing to invest in a car of that age. If the car has over 200k miles, this may be the end of the road.

It can be difficult to drive a 16 year-old car unless you are a do-it-yourselfer. You are often faced with tough decisions on big investments without complete data on the extent of the problem.