hello
I had the engine from my touring rebuild about 8 month ago and its still using 1 liter of TWS 10W60 pr. 1000km?
I decided to have it rebuild as it had 310000km on it and used about 1 liter of oil pr. 8-900km i used a professional workshop to due the work to have some form of security if something was not right. the workshop have done S38 before and did 4 or 5 last year.
The engine was disassembled and measured and all was within spec. all rings, main and big end bearings was changed, cylinder walls was slightly honed and chain, tensioners oil and water pumps was changed. the head was cleaned, all exhaust valves changed and inlet valves and all seats was reconditioned. all valve seals changed and all new springs, fuel injectors, spark plugs and coils. and the engine was assembled with all new seals.
Engine was adjusted, valves and TB adjusted and balanced all running fine.
Engine was run in for about 1300km and oil was changed and it was run lightly for another 1500-2000 km ever since the engine have used 1 liter of oil every 1000km and had full oil change one time and has run about 12000km.
I have had it to the shop 3-4 times and they have "looked" at the oil issue, changed some gaskets but it had no major leaks. but all in all no result.
I have a friend that is a mechanic not BMW but still skilled. he suggested to pull the spark plugs and 1-4 was perfect light grey 5 was all black and nasty and 6 was also black. so he thinks it is burning all the oil on these 2 cylinders.
I think there must have been some fault in the reassembly of the engine at the workshop and wants them to fix it at there expense.
What do you fellows think?? all advice is very welcome!
I had the engine from my touring rebuild about 8 month ago and its still using 1 liter of TWS 10W60 pr. 1000km?
I decided to have it rebuild as it had 310000km on it and used about 1 liter of oil pr. 8-900km i used a professional workshop to due the work to have some form of security if something was not right. the workshop have done S38 before and did 4 or 5 last year.
The engine was disassembled and measured and all was within spec. all rings, main and big end bearings was changed, cylinder walls was slightly honed and chain, tensioners oil and water pumps was changed. the head was cleaned, all exhaust valves changed and inlet valves and all seats was reconditioned. all valve seals changed and all new springs, fuel injectors, spark plugs and coils. and the engine was assembled with all new seals.
Engine was adjusted, valves and TB adjusted and balanced all running fine.
Engine was run in for about 1300km and oil was changed and it was run lightly for another 1500-2000 km ever since the engine have used 1 liter of oil every 1000km and had full oil change one time and has run about 12000km.
I have had it to the shop 3-4 times and they have "looked" at the oil issue, changed some gaskets but it had no major leaks. but all in all no result.
I have a friend that is a mechanic not BMW but still skilled. he suggested to pull the spark plugs and 1-4 was perfect light grey 5 was all black and nasty and 6 was also black. so he thinks it is burning all the oil on these 2 cylinders.
I think there must have been some fault in the reassembly of the engine at the workshop and wants them to fix it at there expense.
What do you fellows think?? all advice is very welcome!