# 1981 Chevrolet 2500 - Misfires on Uphill Climb

**URL:** <https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472>\
**Category:** Maintenance/Repairs\
**Created:** [August 11, 2019, 6:58pm UTC](https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472 "2019-08-11T18:58:40Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Stephen38](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Stephen38](https://community.cartalk.com/u/Stephen38)\
**Post date:** [August 11, 2019, 6:58pm UTC](https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472/1 "2019-08-11T18:58:40Z")

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Misfires on long uphill climb

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [August 11, 2019, 7:15pm UTC](https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472/2 "2019-08-11T19:15:25Z")

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Too bad. More info needed, much, much more.

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [August 12, 2019, 4:13pm UTC](https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472/3 "2019-08-12T16:13:49Z")

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If spark plugs, spark plug wires or any ignition parts need replacing, the symptoms will show up first when going uphill because that is when you are putting the most load on them.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [August 12, 2019, 4:40pm UTC](https://community.cartalk.com/t/1981-chevrolet-2500-misfires-on-uphill-climb/146472/4 "2019-08-12T16:40:05Z")

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A worn timing chain can cause that.

Tester