Blocked oil drain gallery?

[Spetz]

There are 3 oil drain galleries in the head of my 6G74 Diamante.
One seems blocked (oil puddle there that does not go away).

Is this a problem?
Can this be fixed without removing the heads?

Considering the puddle of oil does not drain, I assume no flush will fix that.

 

[bdcardinal]

Is it blocked with build up, or is it purposefully blocked? On some engines a drain back will be blocked or restricted on purpose to keep oil in a certain spot.

 

[bubbatime]

Yeah if it is blocked with sludge then you definitely have a problem. Clean out the sludge as best you can, run a good high detergent synthetic oil and change it frequently.

 

[SnowDrifter]

What does the rest of the motor look like? Generally if there's sludge it will be everywhere, not just in a few oil galleys

 

[Spetz]

The motor is clean and has no sludge build up.

I don't know what it can be, or how this happened.

As said flush/detergent oil won't help as no oil seems to be getting past at all.

 

[Chris142]

screwdriver?

 

[DoubleWasp]

I'd leave it alone before you're making a post about a blocked oil pan pickup.

 

[SnowDrifter]

If you can, in fact, verify it's sludge blocking a galley and not a solid piece of metal where a galley looks like it should be, sure you could clean it. But be advised that cleaning sludge is an all or nothing approach.

See here for a video of what I mean
http://youtu.be/KC-SxrsgEwo

 

[Spetz]

Considering the engine is sludge free, I don't know if I should try to push down whatever is clogging the oil drain gallery??

 

[CBR.worm]

Can you verify that it is supposed to drain there?

 

[WobblyElvis]

I once saw an oil gallery blocked by an o-ring sandwiched between the head and block that must have become displaced during assembly. Ran for a few years before wearing out the valve train.

 

[Trav]

Take a look and see what it is, it may even be a piece of foil from a bottle top.
No reason you cant try to push a piece of thin metal rod down there carefully.

 

[Spetz]

As an update, turns out that there is no oil drain gallery there, so the accumulation of oil is normal.

Thanks for the help guys