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#1
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Occasionally, I have noticed a small puff of blue smoke emit from the exhaust pipe when starting out from a light when the car is warm. The engine uses approximately a quart of oil every 3000 or so, its a 90 420SEL. It just received its 165K EZ service and everything checked out fine. Is this puff ok, or a sign of trouble??? Thanks for your help.
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#2
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Sounds like you have the same problem as I had with my 2.6 190, ie. worn valve guides.
I completely overhauled my cylinder head now no smoke and, as yet oil consumption zero! Not to mention the improvement in performance!! ------------------ |
#3
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Typically worn valve guides exhibit a puff of smoke when starting the engine when cold. With oil consumption being one quart in 3,000 miles, I would say this would be unlikely.
Best of luck, ------------------ Larry Bible '01 C Class, Six Speed '84 Euro 240D, 523K miles '88 300E 5 Speed '81 300D Daughter's Car Over 800,000 miles in Mercedes automobiles |
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