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Only left bank burning oil

Posted By Tim Quinn 5 Years Ago
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Tim Quinn
Posted 5 Years Ago
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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

BIG TIME THANKS TO ALL OF YOU FOR YOUR INPUT. NEXT WEEK ON TUESDAY,WE ARE DOING A BLEED DOWN TEST WITH 100 PSI OF AIR IN THE CYLINDER. WILL LET ALL KNOW THE RESULTS.
Ted
Posted 5 Years Ago
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I’ll suggest performing a cranking compression test to insure you don’t have a piston ring or other cylinder related issue.  It only takes one cylinder to create a problem.  When doing the cranking compression test, all spark plugs need to be removed and the throttle needs to be blocked to the full open position.  A leak down test will also get the job done.

Lorena, Texas (South of Waco)


KULTULZ
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DAMN THAT THING IS PRETTY!



Wires, whites, correct stance and the PI rear swept radio antenna....

... trying not to get misty ...



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Ted
Posted 5 Years Ago
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Tim Quinn (1/23/2019)
.......Have the draft tube connected to the carb with a PCV in line.

When you say draft tube is hooked up to the PCV valve, are you referring to the oil fill tube in the valley cover or the road draft tube located at the lower left front of the block?


Lorena, Texas (South of Waco)


Tim Quinn
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Thanks.
Leak down test will be done this week (30 Jan-02 Feb) at the shop that rebuilt the engine last year or 2,000 miles ago.
Will let you know what they find when they find it.
Tim
Florida
Tim Quinn
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Ted,
The  DRAFT TUBE I'm reffering to is the tube that was connected to the valley cover and hung over the side of the engine to exhaust fumes from the crank case. Now, it is attached to the carb with a PCV inline.
Tim
Florida
Tim Quinn
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Thanks for the compliment...............those WHITES are Coker's and because the rims are Kelsey Hayes rims, I had to use inner tubes in so they'd hold air.
Again, thanks for the comliment,
Tim 
Floridahttp://forums.y-blocksforever.com/uploads/images/7debeeca-0cfe-4732-b60e-bcc4.jpg
KULTULZ
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Thanks for the compliment.........

......those WHITES are Coker's and because the rims are Kelsey Hayes rims, I had to use inner tubes in so they'd hold air.

Again, thanks for the comliment,

Tim 


NO SIR!

THANK YOU FOR SHARING!

Listen, per TED's suggestion/comment  Can you show a photo of your PCV setup? It's vacuum source draw may explain the question.




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Tim Quinn
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Can't send a picture, car is at the shop trying to find the problem
It might be back on Saturday 02 Feb
Thanks,
Tim in Florida
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Ted,
We did  a compression test as you suggested. The range was 155 to 160 psi with 160 being at 80% for the average.
You also mentioned the draft tube. It is connected to a new Summit carb with a PCV in the middle of the rubber hose.
Let me refresh you on the situation. Engine rebuilt 2,400 miles ago. Oil burning out of left bank after car warms up and I take off from a red light or long idle. When the engine is warm and it is shut down for 10 or 16 minutes NO OIL out of left bank. The oil has had a chance to drain back into the oil pan.
What do you think ? Valve seals ?
Let me know, and again, thanks for your input.
Tim in Florida




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