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Only left bank burning oil

Posted By Tim Quinn Last Month
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Tim Quinn
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2,400 miles since then. Did a compression check, got 179 to 180 on all 4 left bank cylinders. Have the draft tube connected to the carb with a PCV in line. Car fires up right away and runs down the street in a very acceptable manner.
Again, only the left bank burns old when engine is warm.
Any thoughts,
Tim in Florida
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Tim Quinn
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Tim Quinn (1/23/2019)
The left bank is burning oil only after the engine is warm. Had the engine rebuilt last May 2018, it has maybehttp://forums.y-blocksforever.com/uploads/images/23a9de5b-d7ad-4ec4-8f37-1fd1.jpg 2,400 miles since then. Did a compression check, got 179 to 180 on all 4 left bank cylinders. Have the draft tube connected to the carb with a PCV in line. Car fires up right away and runs down the street in a very acceptable manner.
Again, only the left bank burns old when engine is warm.
Any thoughts,
Tim in Florida

Also,didn't see presence of oil burning.,forgot to mention that all 4 plugs were light coffee in color
cjs1958
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I had a overhauled 289 that burned oil on the left bank, It turned out to be the compression rings turned alinging the ends of the rings, but it was very evident in the plugs. I assume you're seeing smoke. How much oil is it using? Are you sure its not water burning, that would be a whiter smoke.
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Could be the valve stem seals were improperly installed on that side and one or two have shifted  allowing oil down the stem . Pull the valve cover and look at the seals through the springs look to see if they have cracked or moved . If you plugs are clean and toasty most likely the oil is going down the valve stem and not making it into the combustion chamber . its just a guess
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you could also have bad guides on that head.if valve geometry is of they can wear the guides in a hurry.i dont know how bad y blocks are for this.brand x is known for this.just a guess.
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I agree I think whatever his problem is it is in the head a bad seal or valve guide I doubt if it’s a ring problem
Tim Quinn
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BIG THANKS
Tim Quinn
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I'LL LOOK AT THIS.
BIG THANKS
Tim Quinn
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I'LL LOOK AND SEE WHAT I CAN SEE,
THANKS
Tim Quinn
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NOT MUCH OIL AT THIS TIME
WE'RE GOING TO DO A BLEED DOWN TEST....PUT 100 PSI OF AIR IN CYLINDER AND GETTING A READING.


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