# Car will only start with starting fluid, then runs fine once going **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [December 29, 2013, 1:38pm UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874 "2013-12-29T13:38:49Z")\ **Posts on this page:** 12\ **Page:** 2
**Author:** ![SOTF](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SOTF](https://community.cartalk.com/u/SOTF)\ **Post date:** [January 2, 2014, 3:54am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/21 "2014-01-02T03:54:18Z")
FIXED. This was an issue with the new crank sensor. It was not providing spark. Putting an old (and also faulty) one in let’s the car start right up. ---
**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\ **Post date:** [January 2, 2014, 3:56am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/22 "2014-01-02T03:56:48Z")
Well, happy new year to YOU!! And thanks for closing the loop by telling us what the final result was. ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [January 2, 2014, 4:12am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/23 "2014-01-02T04:12:11Z")
@SOTF Good news Just curious . . . was the new (and faulty) crank sensor a store brand? Are you going to get a sensor from the dealer now? ---
**Author:** ![SOTF](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SOTF](https://community.cartalk.com/u/SOTF)\ **Post date:** [January 2, 2014, 6:10am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/24 "2014-01-02T06:10:10Z")
The new/faulty CKS is a duralast from autozone. I will be buying another one off rockauto instead. ---
**Author:** ![SOTF](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SOTF](https://community.cartalk.com/u/SOTF)\ **Post date:** [January 2, 2014, 9:35pm UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/25 "2014-01-02T21:35:35Z")
Does anyone have any tip to get the o-ring to seat properly? If I put it on with the sensor, all the way up the shaft, I can’t push it in. I’ve oiled the o-ring up but still unable to get it to sit far enough in. I can’t get the o-ring into the hole. Easier to put o-ring in first then put sensor in? ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [January 2, 2014, 10:00pm UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/26 "2014-01-02T22:00:28Z")
Glad you got it fixed. Thanks for the update. ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [January 2, 2014, 10:22pm UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/27 "2014-01-02T22:22:41Z")
I believe that the O-ring has been the problem from the time that new sensor was installed. Oiling the O-ring and the hole is necessary and twisting as you press in usually gets them in. Using the attaching bolt to push the sensor is often the problem with new replacement sensors. ---
**Author:** ![SOTF](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SOTF](https://community.cartalk.com/u/SOTF)\ **Post date:** [January 2, 2014, 10:38pm UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/28 "2014-01-02T22:38:26Z")
Rod Knox it is currently the problem. I decided to get a replacement for the other one and this one works great… without the o-ring. You know it is seated because the magnet grabs inside. I can’t get force behind it because of the location. The other one was not seated but was also DOA as I wasn’t able to start the car without the O-ring like I can with the new one. I am good to go when I am able to get this in. Thanks for all your help! ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [January 3, 2014, 4:16am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/29 "2014-01-03T04:16:47Z")
@SOTF Are you certain that there are no remnants of the old o-ring inside the hole? ---
**Author:** ![SOTF](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@SOTF](https://community.cartalk.com/u/SOTF)\ **Post date:** [January 3, 2014, 5:35am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/30 "2014-01-03T05:35:29Z")
Yes, I have the old o-ring out to judge the size. It should be inside the block but I can’t get it past the opening (still). It is 5 degrees out, going to give it a go tomorrow. ---
**Author:** ![akain101](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@akain101](https://community.cartalk.com/u/akain101)\ **Post date:** [February 16, 2017, 3:11am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/31 "2017-02-16T03:11:19Z")
My 1999 Hyundai Lantra faces a similar problem. Starts perfectly fine every morning or whenever the engine has cooled. If the engine is hot and I try and start the car straight after driving, it keeps cranking but will not start UNLESS I use starting fluid/spray. After using the starting spray it starts and drives fine. However!! The car has started to bunny hop while driving now, and even stalled on its own as I was about to park it. Any ideas ??? ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [February 16, 2017, 3:54am UTC](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874/32 "2017-02-16T03:54:11Z")
Suggest to re-post as a new question @akain101 . You’ll get better answers that way. Click “new topic” at the top right after clicking “maintenance/repairs” link above. [Previous page](https://community.cartalk.com/t/car-will-only-start-with-starting-fluid-then-runs-fine-once-going/82874.md?page=1)