# 2010 Kia Optima Gas or exhaust smell

**URL:** <https://community.cartalk.com/t/2010-kia-optima-gas-or-exhaust-smell/89273>\
**Category:** Maintenance/Repairs\
**Created:** [March 12, 2015, 4:33am UTC](https://community.cartalk.com/t/2010-kia-optima-gas-or-exhaust-smell/89273 "2015-03-12T04:33:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![GJCHarn](https://avatars.discourse-cdn.com/v4/letter/g/a9a28c/32.png) [@GJCHarn](https://community.cartalk.com/u/GJCHarn)\
**Post date:** [March 12, 2015, 4:33am UTC](https://community.cartalk.com/t/2010-kia-optima-gas-or-exhaust-smell/89273/1 "2015-03-12T04:33:48Z")

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After a tune-up, including replacement of all replaceable filters, including cabin filter, I kept smelling what I thought was gas, coming into cabin, through the vent, when it was pulling in air from outside. I ckd back w/my mechanic to see if it was anything related to tune-up, which he said it was not & he ckd & found no visible leaks in gas line or around injectors. He didn’t think it was gas & suggested I ck w/dealer for engines leaks and/or w/muffler/exhaust repair shop to see if it was exhaust fumes. Dealer also didn’t think it was gas fumes, & agreed I should ck exhaust system, but it still smelled like gasoline to me. I’m not a mechanic but I did some research and read that a gasoline smell can be a symptom of too high gas content corrected by tuning up the injectors to adjust the mix; blocked injectors might also be an explanation. but if that is the explanation & a tuneup could fix the problem, it would also explain why the smell started after the tune-up. I always trusted my mechanic But I went back 3x and my mechanic never even suggested that could be the problem even though I pointed out it started rt after he serviced it. Does that sound like a reasonable cause/solution? What should I do? Go to another mechanic? I pd $250 for the tune-up & don’t want to spend another $250 to fix it but other possible issues with exhaust might be even more expensive and/or a safety risk.

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**Author:** ![knfenimore](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@knfenimore](https://community.cartalk.com/u/knfenimore)\
**Post date:** [March 12, 2015, 5:02am UTC](https://community.cartalk.com/t/2010-kia-optima-gas-or-exhaust-smell/89273/2 "2015-03-12T05:02:18Z")

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Get a friend in the car and ask them if they smell gas. A small amount odf gas makes a hole lot of stink. Any leak on fuel rail or injector o-ring could cause it.