2004 Chevrolet Avalanche Blue smoke

2004 CHEVROLET AVALANCHE
198,000 MILES • V8 • 4WD • AUTOMATIC
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JCSROCKS
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Blue smoke about once a week when I start it
Oct 19, 2015 at 2:23 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
With that many miles, it could be a few things. However, most commonly it is the valve seals which have broken down or gotten hard and brittle allowing oil to bypass them. If you use full throttle, does it happen?
Oct 19, 2015 at 6:16 PM
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JCSROCKS
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I have never noticed it except about once a week, and only when I first start it. has not been burning oil , just had it changed couple weeks ago , will ck see if it is down any in the morning.. thanks for your response
Oct 19, 2015 at 9:13 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Let me know what you find. Chances are it is what I mentioned. However, with that many miles, it could be rings or valve guides. A compression test will help answer questions.
Oct 20, 2015 at 5:39 PM
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