Inspectesd the intake manifold and it's definitely getting oil in there. Suspected PCV and clear the line a valved with air. Ran the car. Was clean exhaust, hit the gas, made a smoke ring and all the blue smoke again

 

Sometimes the third ring on the piston get clogged and full of sludge. It won't seal correctly and oil gets past the ring. The oil is burned and out thru the exhaust. There are some oil additives that help improve the sealing ring and others clean some of the sludge. They aren't too expensive and sometimes worth a try. Of course the proper thing is to replace the rings on the pistons. But, who knows if it is worth the cost??

 

I am not a fan of additives but I would use something for 100 miles, then change the oil. Drive gently as additives might thin the oil.

 

Just had another thought, the oil could be coming in via the valves. when the head work was done did they do the valves and valve seals.

 

They did but I'm going to call tomorrow to confirm.

 

My thought was valve too since the intake manifold has some oil getting into it

 

You check the PCV valve. Consider changing it. To narrow down the search, Check the spark plugs to determine which cylinders are burning oil.

 

So the vehicle was not consuming oil before the head rebuild?

If it was not consumig oil at all I'd bring it back to the shop that did the repair.
Let them figure it out.

If the engine was consuming oil before the repair, that is another story.

 

Dug into it more this afternoon. Called the shop that rebuilt the head. They validated that their concern is more that the piston ring in gummed up. Since the compression is good, it would make sense that the oil is getting pushed back up into the manifold. I confirmed from my partner that it consumed oil before I went down this journey of CRV rebuild(really wish I knew this while I had the head removed).

Im going to go the route of Seafoam and see what I get out of it. From there some high RPM driving over the nearby mountain pass to see if I can continue to get it to break up. It the consumption doesnt resolve......sounds like my winter will be filled with another head removal and piston rings replacement.

 

keep us posted

 

Update to all. Went the route of snake oil(seafoam) and still no success. Just changed the oil and dropped another 100ml of seafoam in the cylinders again. Will leave overnight and see if there is progress after this treatment. Not going to hold my breath.

Was interesting, talked to a guy at the auto parts store and he has the same issue. Another similar issue we both have is the oil burns quick until it gets to the low mark, then seems to stop or certainly slow down.

I suspect I will be pulling the motor this winter for a bottom end rebuild.

 

Seafoam will not stop oil from burning, it just cleans the sludge and carbon deposits out of your engine, it's not snake oil it will clean an engine good. Only finding the source of the oil getting into the combustion chamber will stop you from burning oil. Word of advice though, when using seafoam only add it to your oil or gas tank. Don't ever add it straight to your throttle body because all that carbon releasing at once will gum up your catalytic converter. I ruined one with seafoam and will never add it straight to my TB ever again.

 

Check you tube videos on how to clean piston rigs with those chemicals.

It involves letting the liquid sit over the pistons for certain amount of time and then purging it out, before putting the spark plugs back in.

Gl