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My New engine is using oil is it Glazed or broken

Posted by Ashley Wilson on

You have just had your engine Reconditioned or being that handy man you are, you have a Grin from ear to ear as you have just rebuilt your engine yourself. Well done

Now the engine or motor is installed, you started it up ( primed it with oil first ) and it blows smoke !!! Noooooooo You go for a test drive and it lacks power !!!! Nooooo what is wrong .

Were do we start.

There are a number of reason why a New  Diesel Motor , Petrol Motor or reconditioned or a newly machined engine block uses oil

The most common reasons for oil usage

Glazing (running in procedure)

Click on the link  Running in your engine Blog

Using the incorrect oil to running an engine 

Engine rebuilders use a basic engine oil to Run in - new engines or reconditioned engines with a conventional non-detergent SAE 30W or 10W-30. Once the piston rings have beaded in (a process that can take 45 minutes to an hour, or up to 500 Kilometres of normal driving), the run in oil is drained and the engine is refilled with whatever oil you will be used for normal driving (conventional or synthetic , friction modifiers, detergents , additives etc . the stuff a engine running in does not need.)

Rings 

  • Poor ring tension – quality and brand of rings
  • Incorrect ring size supplied ! did you check your ring gaps?
  • Rings being fitted upside down or
  • Fitted in the wrong ring land
  • Ring sticking in ring lands
  • Broken rings
  • Oil ring not being installed correctly
  • Rings gaps not off set

Bores not being cleaned correctly after honing  

After honing thoroughly wash cylinder walls with soapy water and a scrub brush and oil immediately thereafter. Repeat until all evidence of foreign matter is removed. In either method that is used, a white cloth wiped on the surface should remain clean. there are specific bore wipes available for this purpose.

Do not use Petrol, Diesel  or kerosene to clean the cylinder walls after honing. Solvents of this nature will not remove the grit from the cylinder wall and often carry particles of abrasives into the pores of the metal. Failure to properly clean the cylinder walls will leave abrasives that will cause rapid wear and ring failure and will result in elevated oil consumption.

Glazed cylinder bores issues

  • lack or power
  • engine using oil
  • excessive oil leaks from engine blowby causing excessive crank case pressure
  • engine blowing blue smoke

 

 

  • The 2 closer bore have a cross hatch pattern they have been honed.
  • The other 2 bores are yet to be honed.

 


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