# 1996 Ford Ranger w 2.3L engine knocks a lot

**URL:** <https://community.cartalk.com/t/1996-ford-ranger-w-2-3l-engine-knocks-a-lot/5727>\
**Category:** Maintenance/Repairs\
**Tags:** engines\
**Created:** [October 9, 2007, 7:55pm UTC](https://community.cartalk.com/t/1996-ford-ranger-w-2-3l-engine-knocks-a-lot/5727 "2007-10-09T19:55:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kvernon](https://avatars.discourse-cdn.com/v4/letter/k/8491ac/32.png) [@kvernon](https://community.cartalk.com/u/kvernon)\
**Post date:** [October 9, 2007, 7:55pm UTC](https://community.cartalk.com/t/1996-ford-ranger-w-2-3l-engine-knocks-a-lot/5727/1 "2007-10-09T19:55:33Z")

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A few years ago, my truck started knocking and pinging on hills. Then I put some fuel additive in the gas tank and it went away for a while. When it came back, I started using medium octane gas, and that helped for a while. Now, it’s knocking more than ever–on hills and even on take off from a dead stop. Is there a danger of doing damage to my engine using high octane gas?

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**Author:** ![Beadsandbeads](https://avatars.discourse-cdn.com/v4/letter/b/c57346/32.png) [@Beadsandbeads](https://community.cartalk.com/u/Beadsandbeads)\
**Post date:** [October 10, 2007, 2:47am UTC](https://community.cartalk.com/t/1996-ford-ranger-w-2-3l-engine-knocks-a-lot/5727/2 "2007-10-10T02:47:00Z")

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Using high octane gas, no. I would suggest that the EGR system might be getting clogged up causing the knocking.