# 1996 Infiniti Q45 - Engine issues

**URL:** <https://community.cartalk.com/t/1996-infiniti-q45-engine-issues/180971>\
**Category:** Maintenance/Repairs\
**Tags:** infiniti\
**Created:** [November 30, 2021, 4:10am UTC](https://community.cartalk.com/t/1996-infiniti-q45-engine-issues/180971 "2021-11-30T04:10:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Felton2](https://avatars.discourse-cdn.com/v4/letter/f/ad7895/32.png) [@Felton2](https://community.cartalk.com/u/Felton2)\
**Post date:** [November 30, 2021, 4:10am UTC](https://community.cartalk.com/t/1996-infiniti-q45-engine-issues/180971/1 "2021-11-30T04:10:30Z")

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Looses revs when stopped at lights and also jerks after I do about60 kms.Both problems are intermittent.Also blowing black sooty smoke sometimes.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [November 30, 2021, 12:24pm UTC](https://community.cartalk.com/t/1996-infiniti-q45-engine-issues/180971/2 "2021-11-30T12:24:39Z")

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Yet, no check engine light?  
Your CEL might be burned out. You can still have the codes read.

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**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [December 1, 2021, 3:39am UTC](https://community.cartalk.com/t/1996-infiniti-q45-engine-issues/180971/3 "2021-12-01T03:39:12Z")

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It sounds like a fuel system problem, i.e., the engine is running with too little fuel sometimes (rpms drop) and too much at others (black smoke). A good mechanic can figure it out and fix it.