# 4.3 liter GM Laying down

**URL:** <https://community.cartalk.com/t/4-3-liter-gm-laying-down/51378>\
**Category:** Maintenance/Repairs\
**Tags:** jimmy, gmc\
**Created:** [July 6, 2010, 5:32pm UTC](https://community.cartalk.com/t/4-3-liter-gm-laying-down/51378 "2010-07-06T17:32:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![oriamkc](https://avatars.discourse-cdn.com/v4/letter/o/41988e/32.png) [@oriamkc](https://community.cartalk.com/u/oriamkc)\
**Post date:** [July 6, 2010, 5:32pm UTC](https://community.cartalk.com/t/4-3-liter-gm-laying-down/51378/1 "2010-07-06T17:32:50Z")

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My 2000 Jimmy 4.3 is running badly. Just had the cap, rotor,wires, and plugs changed. No error codes. When cold and you step o it, it backfires. When warmed up it will “lay down” at any time. I took it to a GM dealer and they could not figure out what was wrong! They pulled the distributer and checked the fuel pressure…all ok. Any ideas would be appreciated. Sometimes it runs just fine.

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [July 6, 2010, 6:40pm UTC](https://community.cartalk.com/t/4-3-liter-gm-laying-down/51378/2 "2010-07-06T18:40:23Z")

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It is obscenely easy to sell people “cap,rotor,wires,plugs” when their car does not run right, and never be asked for the money back when your work does not fix the problem.