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2000 Chevrolet Blazer

Question: engin knock

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gwinnieus, 2.0L 4 Cylinder, Celina, OH, February 28, 2010, 02:10

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engin knocks when i first start it in the morning.

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• Answer #1

  Oakman March 04, 2010, 15:51
  

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  Make sure the engine oil is clean and full in your 2000 Chevrolet Blazer. Next try and see if you can tell if the noise is coming from inside the motor or from an external component. If the noise is coming from inside the engine it will most likely need to come apart to see what is wrong.
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  Visitor, July 23, 2010, 09:43

  I was quite sure the days of a "master mechanic" over selling a problem was almost over. Especially over the internet where you have no possible monetary gain and should actually give advice.

  Your problem is nothing to worry about, you might want to use a thicker oil during the warmer seasons. What happens when you engine runs is the oil pump takes oil from the oil pan all the way up to the heads. When you shut off the engine the oil drains back down. So when you start your engine there is a lack of oil in the top end and you get valve clatter until oil returns and it goes away. Usually within a few seconds, new motors also have valve clatter even though you spend awhile priming the oil pump.
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