Question about 2008 Hyundai Sonata 2.4

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Engine Knocking. I recently got my oil changed. I was driving down the high way at about 70 miles per hour. As I started to exit the freeway I heard a very loud knocking noise. I stopped the car and had it towed back to my house. Not sure what it could possibly be. Do you have any suggestion?

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  • Hyundai Master
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I would expect the engine is damaged.
You'll need to check the oil pressure and try to narrow down the area where the sound is coming from to proceed.
A very loud knock is probably a piston or rod bearing.

Posted on Feb 17, 2014

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Posted on Jan 02, 2017

jonbrown725
  • 73 Answers

SOURCE: knocking noise in 3.8 lit 95 ford taurus

You can not put a liquid where metal is supposed to be. Just a general rule of thumb. The high RPM's had been too much for the engine, and A rod bearing, or rod knocking is about the same thing. Dont try the heavier oil thing, I hate when ppl suggest such stuff. Just replace the bearing, or in most cases and cost efficent, the engine.

Posted on Jan 15, 2009

ivan_whisker
  • 1013 Answers

SOURCE: knocking under valve cover on cold starts

hi if it goes awat after a few seconds its a hydrolic lifter for one of the cames will go for years before it need replacing

Posted on Aug 15, 2012

  • 279 Answers

SOURCE: oil light comes on knocking in engine ( MY

if it was ran that low on oil then it has internal damage id suggest installing a used engine

Posted on Jan 21, 2010

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