M8CPK
Active Member
- Posts
- 108
- Location
- Brough, East Yorks.
Morning..
On Sunday I covered about 160/180 miles in my Discovery 1 on and off road. Before setting off I topped up the engine oil level to Max and was surprised to see it was frighteningly low.
During the day one of the lads in a following vehicle commented that my disco was blue smoking quite badly.
On Monday morning I checked the oil level again and found it has gone from Max on the dipstick to below minimum. The disco drops a small amount of oil but does not leak from the rocker cover gasket and the engine is generally quite dry.
I carried out a compression test yesterday morning on a cold engine as it has not moved for 2 days and attained the following results.
Cyl 1 - 270psi cyl 2,3 and 4 280psi.
I appreciate these are down on the manual values of 348psi but they are all quite even. Does this mean all my piston rings have worn evenly and need replacing or does the problem lie elsewhere?? Are the manual values those expected from an average engine or a new/rebuilt engine?
I must point out that I replaced the head gasket a month or so ago more for piece of mind than necessity. Whilst the head was off I reground the valves, cleaned up the head refitted with an elring gasket, new valve stem seals and new bolts and reset valve clearances.
Any pointers as the where my engine oil is going greatly appreciated.
Thanks in advance.
On Sunday I covered about 160/180 miles in my Discovery 1 on and off road. Before setting off I topped up the engine oil level to Max and was surprised to see it was frighteningly low.
During the day one of the lads in a following vehicle commented that my disco was blue smoking quite badly.
On Monday morning I checked the oil level again and found it has gone from Max on the dipstick to below minimum. The disco drops a small amount of oil but does not leak from the rocker cover gasket and the engine is generally quite dry.
I carried out a compression test yesterday morning on a cold engine as it has not moved for 2 days and attained the following results.
Cyl 1 - 270psi cyl 2,3 and 4 280psi.
I appreciate these are down on the manual values of 348psi but they are all quite even. Does this mean all my piston rings have worn evenly and need replacing or does the problem lie elsewhere?? Are the manual values those expected from an average engine or a new/rebuilt engine?
I must point out that I replaced the head gasket a month or so ago more for piece of mind than necessity. Whilst the head was off I reground the valves, cleaned up the head refitted with an elring gasket, new valve stem seals and new bolts and reset valve clearances.
Any pointers as the where my engine oil is going greatly appreciated.
Thanks in advance.
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