A few days ago, I pulled onto a highway and punched it through first and second gears and suddenly a blue cloud appeared from my left tailpipe. There was no noticeable effect on performance, nor change in sound. I nursed my way home over 100+ miles, and went through about 4 quarts of oil, with a large amount of blue smoke, upon acceleration and deceleration but also at idle; still no noticeable effect on performance or sound.
After getting home I looked at the tailpipes and found wet oil inside the left tailpipe. Not just residual soot from burned oil (such as found in the right tailpipe), but actual liquid oil.
Under hood exam revealed that plugs 1 and 3, on left side, electrodes are black and there is oil on the threads, while all other plugs' electrodes are white, also with oil on the threads. Also, ventilation tubes and grommets between the valve covers and air cleaner are oily, and the breather caps/filters in the valve covers are loaded with oil. Can I assume this is normal spray from the valves, or is this indicative of a problem? Should I clean these parts (with gasoline okay?) Once the oil problem is corrected?
I am hoping you can give me possible causes, and how to fix them. Finally, I am asking for your thoughts on whether it would be advisable at the time of the fix to have further work done, given that the engine has never been torn down during 49+ years and 115,000 miles. To reiterate, I don't see any problem with performance.
As I'm sure you've gathered, I am not an accomplished "wrench" just know enough to maybe be dangerous! Thank you very much for any advice you can provide.
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Monday, May 27th, 2019 AT 9:57 AM