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Extreme oil consume, 5 liter every 7500km

 
Old 02-05-2019, 10:58 AM
  #41  
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It is a lot faster and easier to replace the retainers and seals without removing the head. Just need a method of keeping the valves from falling in, using compressed air or rope.
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Old 02-05-2019, 11:41 AM
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as the previous poster said.

keep the head on the block. you do not need to remove the head unless you are doing valve seats and valve guides.

I like the Rope method, described in this video
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Old 02-05-2019, 11:49 AM
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Filigranas
Before you go for the big spending things, have you done a compression check yet?
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Old 02-05-2019, 12:42 PM
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Originally Posted by flanders View Post
Filigranas
Before you go for the big spending things, have you done a compression check yet?

I an waiting for the date with the mechanic, He will do the compression and leak test, but all seems the problem are the valve retainer etc. thing from what I am reading here.
He told me
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Old 02-06-2019, 01:18 AM
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Originally Posted by Filigranas View Post
I an waiting for the date with the mechanic, He will do the compression and leak test, but all seems the problem are the valve retainer etc. thing from what I am reading here.
He told me
Hmm there might be a misunderstanding.
Cracked valve retainers do not impact your cylinders' compression or attribute to your oil consumption in any way.

The only reason why I brought them up in one of my posts was, since you are taking the valve cover off already to replace the gaskets (spark plug tube seals, valve cover gasket, valve cover bolt grommets), you might as well want to take a look at your retainers as on model years before 2004 these retainers can crack and result in catastrophic engine failure

Leak down testing and compression can be done without removing the valve cover. The only thing that needs to come off/out is the coil pack cover, the coil packs itself and the spark plugs... and fuel pump fuse
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Old 02-06-2019, 08:56 AM
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Originally Posted by Filigranas View Post
I have been told that after replacing all the valve retainers etc, some part of the engine must be rectified.

Do not know if is the exact English word, rectify is when on an old engine you put new piston and the old cilinder must be polished ,something like that.
I believe the phrase you are talking about is 'break in procedure'. When an engine is brand new, or when its been rebuilt, you need to use the engine in a prescribed sequence to allow all the new parts to wear to compatibility with each other.

Typically its thongs like don't exceed a certain rpm for a certain number of hours or miles. And vary rpm a lot. Progressively drive it harder and harder. Then change oil at the end of break in.

There are many different break in techniques, depending on what engine is used for, etc.

But if you are just changing retainers you don't need to redo the break in process.
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