Blue smoke

Asked by Jan 09, 2017 at 05:25 PM

Question type: Maintenance & Repair

225k for miles on my 97 chevy prizm and it's just
starting to blow a little blue smoke on cold starts
I'm guessing it's piston rings  

3 Answers

87,165

Usually it is the valve guides if the oil clears up, but ya, she's worn.

1 people found this helpful.
81,445

Definitely sounds like worn valve guide seals. When you shut off the engine oil will run down the valve, past the worn seal, and into the combustion chamber. It'll sit there until you start the engine again giving you that one puff of blue smoke on start up. As the seals continue to wear, over time, you'll start to see blue smoke at idle only. HTH. -Jim

120,185

Try using 20W-50 oil or STP and you might get more miles out of it. You have nothing to lose.

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