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Technical How to Diagnose Oil Consumption Issue

Discussion in 'The Hokey Ass Message Board' started by nbender182, Jun 13, 2019.

  1. The PCV is in the PS valve cover, and I ran a hose from it to the carb intake spacer. I have a traditional breather in the DS valve cover.
  2. Word of advice, lose the "rr" word, it does not fly well here. Is the 85 lbs a seated pressure? Seems low for a performance build. The cylinder walls look a little glassy to me, is there any evidence of a cross-hatch when the heads were off. The engine looks a little beat up.
  3. I don't know if that's a seated pressure. I saw no cross-hatch marks on the cylinder walls.
    osage orange likes this.
  4. sdluck
    Joined: Sep 19, 2006
    Posts: 2,094


    The cylinders that the valves hit the piston has probably smashed the ring land and pinched the rings
    osage orange likes this.
  5. Sounds reasonable. Based on the plugs, I think my oil problem is roughly equal in all cylinders though. Do you agree?
  6. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 1,231

    from illinois

    That engine is just plain worn out ! Get or have some one check the bore dia. half way down , bet the cylinders are egg shaped , close up right cyl is badly scored , #3 looks like rust/ pitting damage ....
    427 sleeper and bobss396 like this.
  7. Ding ding we have a winner.
    osage orange likes this.
  8. Heavy Old Steel
    Joined: Feb 1, 2019
    Posts: 50

    Heavy Old Steel
    from Virginia

    The cylinder walls don't appear to have any crosshatch and look very smooth I agree with those who said it is worn out

    Sent from my SM-J327VPP using The H.A.M.B. mobile app
    anthony myrick and osage orange like this.
  9. Take it apart and all sorts of things might fall off the pistons.
    onetrickpony and osage orange like this.
  10. Dyce
    Joined: Sep 12, 2006
    Posts: 1,761


    That closer of the 2 pictures looks like it has some deep scratches in it. Not good.
    osage orange likes this.
  11. junior 1957
    Joined: Dec 10, 2006
    Posts: 215

    junior 1957

    does your valve cover have a baffle under the pcv valve? if not it will use a bunch of oil, the pics of your short block look like all the cylinders are oily
    ClayMart likes this.
  12. noboD
    Joined: Jan 29, 2004
    Posts: 6,790


    I agree Jr. But there is no way it can use a quart in 40 miles without smoking. You have major problems.
    osage orange likes this.
  13. F-ONE
    Joined: Mar 27, 2008
    Posts: 1,686

    from Alabama

    Blowing, leaking or burning......
    My guess is all three with blowing and burning being the usual suspects.
    I don't know why but smoke does not show as much in natural light. If you see some smoke in daylight, other than the factory installed " Chevy Crank Puff", look in your rear view at night. You'll see it.
    As much goop is on the engine, it blowing it too.
    Blowing and burning....that ain't the heads. That's wore slap out.

    I"ll bet that transmission is well greased too from the rear main.

    I'd be willing to bet, that truth be known, those S10 racers:rolleyes: did not really build that engine. Now, they may have put a cam in it but the classic red neck hot rod is a well used engine freshened up. It's loose. It will run like a striped ass ape burns a quart every 40 miles. Then it's sell time.
    Old wolf likes this.
  14. 83Squarebody
    Joined: Jun 4, 2018
    Posts: 89

    from Arizona

    Rings... valves... youre burning it up if its not leaking
    Old wolf likes this.
  15. Truck64
    Joined: Oct 18, 2015
    Posts: 3,064

    from Ioway

    Sounds like the carb is running pig rich at cruise and washing out the rings? Those plugs are real bad but that's not just oil.

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