# 2010 Mazda Mazda3 smoky tailpipe with jerk during shift

**URL:** <https://community.cartalk.com/t/2010-mazda-mazda3-smoky-tailpipe-with-jerk-during-shift/114637>\
**Category:** Maintenance/Repairs\
**Tags:** mazda3, mazda\
**Created:** [March 29, 2018, 1:52am UTC](https://community.cartalk.com/t/2010-mazda-mazda3-smoky-tailpipe-with-jerk-during-shift/114637 "2018-03-29T01:52:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![robjuul](https://avatars.discourse-cdn.com/v4/letter/r/c4cdca/32.png) [@robjuul](https://community.cartalk.com/u/robjuul)\
**Post date:** [March 29, 2018, 1:52am UTC](https://community.cartalk.com/t/2010-mazda-mazda3-smoky-tailpipe-with-jerk-during-shift/114637/1 "2018-03-29T01:52:03Z")

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Hi, So my car didn’t start so I had it jumped.I was thinking dead battery. It started after jump but now there’s smoke from the tailpipe and it jerks when I shift from park to drive. Smoke is white/gray color. Thanks.

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**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [March 30, 2018, 2:08pm UTC](https://community.cartalk.com/t/2010-mazda-mazda3-smoky-tailpipe-with-jerk-during-shift/114637/2 "2018-03-30T14:08:43Z")

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Could be the alternator isn’t working right.  
Check battery (system) voltage with engine idling.  
Should be ~13.5-14V.  
Could also be an electrical surge during the jump damaged electronics.