# Engine knock

**URL:** <https://community.cartalk.com/t/engine-knock/27645>\
**Category:** Maintenance/Repairs\
**Tags:** nissan, engines\
**Created:** [March 12, 2009, 4:14am UTC](https://community.cartalk.com/t/engine-knock/27645 "2009-03-12T04:14:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lmcwill](https://avatars.discourse-cdn.com/v4/letter/l/eada6e/32.png) [@lmcwill](https://community.cartalk.com/u/lmcwill)\
**Post date:** [March 12, 2009, 4:14am UTC](https://community.cartalk.com/t/engine-knock/27645/1 "2009-03-12T04:14:02Z")

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My son drove his 89 Nissan pickup until it started “clicking” and the oil light came on and it wouldn’t start. Four quarts of oil later and a jump start got it to a AAA shop who said the “high knock” is OK but the “low knock” is bad and it needs a new engine. Sounds like rods and bearings?

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [March 12, 2009, 4:19am UTC](https://community.cartalk.com/t/engine-knock/27645/2 "2009-03-12T04:19:32Z")

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No knock is acceptable, high or low, and considering what happened the engine is no doubt trashed.

Considering the age of the truck it would be better to try and find a decent used engine and swap that in if he is going to keep the truck. A proper (key word) engine rebuild can get very expensive.