I'm hearing a rattling sound coming from my engine. What could be causing it?

Tiny
JFMATHES
  • MEMBER
  • 2004 HYUNDAI SANTA FE
  • 191,000 MILES
I drive a 2004 Hyundai Santa Fe with a 2.7 liter V6 engine. I started hearing a rattling sound coming from my engine today. I've checked the oil and it's full. My oil pressure light hasn't came on and the car is driving fine I'm just concerned to say the least.
Tuesday, November 29th, 2011 AT 7:42 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Alot of things. Might be a cam/follower problem. Have a pro listen to it.
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Tuesday, November 29th, 2011 AT 8:27 PM
Tiny
JFMATHES
  • MEMBER
  • 6 POSTS
The rattling only occurs during a cold start. I took it to a pro today and it didn't make the rattling noise so they're going to keep it overnight, start it in the morning and find out what's causing the noise.
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Tuesday, November 29th, 2011 AT 9:01 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it only does it when it's cold then goes away it's probably piston slap. Nothing to worry about unless you want an engine rebuild. What piston slap is, the pistons have alittel to much clearance when cold and when started up an drun for about 2 minutes, sometime less, they expand and the noise leaves. This is notingto worry about unless it is somethingelse.
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Tuesday, November 29th, 2011 AT 11:32 PM

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