Hi BMW fanatics! i'm new here and this is my first post.
I live in UK but english is not my first language, so sorry for any problems with reading this.
My car, e46 325ci msport 70000 when bought it and now 110000 miles
I love it but since i bought it I've notice big thirst for oil :bawling:
After reading many forums and post I've decided to change VCG and CCV(oil separator with hoses):thumbsup: But after few days driving no changes ,still 1/2 litre per 300 miles (castrol 5w30)
Next thing was to change for thicker oil 0w40,small improvment but not much.Bit confused because car is running fine,pulls fine no leaks ect,ect.
Many forums mentioned problems with valve seals so another DIY was in My plans
I've did valve and vanos seals with out removing the head and this time I was sure the problem is gone because consumption was near to zero:woot:,but after 6-8 months it came back :banghead:.So i order another set of valve seals i notice that they are different to old ones (tighter on the stem),bell start to ring,BMW put wrong seals and now they improve them for beter seal,I thought this time must be OOOOKKKKKK!!!!!!
It took another few months when car start to drink again 1/2 litre per 600 mile,:wtf::wtf:.Found some info saying if the valve guides are worn,replacing stem seals not gonna help for long.
After months of planning I've decided to remove the head and see myself :wtf: is going on!!!When I removed intake manifold I spot oil on the bottom of the 4 ports ,valves was stoping oil from geting to chambers( thats way car was smoking a bit on startup)
I feelt I'm going closer and after removing the head and taking it apart I've messured valve play! New valve stem is 5.94mm and guide is 6.00mm so 0.06mm play ,almost no play,and my was 0.2-0.3mm on intake and 0.3-0.5 on exhaust.
Now head is in machininst shop and probably next week i'm puting it back
I live in UK but english is not my first language, so sorry for any problems with reading this.
My car, e46 325ci msport 70000 when bought it and now 110000 miles
I love it but since i bought it I've notice big thirst for oil :bawling:
After reading many forums and post I've decided to change VCG and CCV(oil separator with hoses):thumbsup: But after few days driving no changes ,still 1/2 litre per 300 miles (castrol 5w30)
Next thing was to change for thicker oil 0w40,small improvment but not much.Bit confused because car is running fine,pulls fine no leaks ect,ect.
Many forums mentioned problems with valve seals so another DIY was in My plans
I've did valve and vanos seals with out removing the head and this time I was sure the problem is gone because consumption was near to zero:woot:,but after 6-8 months it came back :banghead:.So i order another set of valve seals i notice that they are different to old ones (tighter on the stem),bell start to ring,BMW put wrong seals and now they improve them for beter seal,I thought this time must be OOOOKKKKKK!!!!!!
It took another few months when car start to drink again 1/2 litre per 600 mile,:wtf::wtf:.Found some info saying if the valve guides are worn,replacing stem seals not gonna help for long.
After months of planning I've decided to remove the head and see myself :wtf: is going on!!!When I removed intake manifold I spot oil on the bottom of the 4 ports ,valves was stoping oil from geting to chambers( thats way car was smoking a bit on startup)
I feelt I'm going closer and after removing the head and taking it apart I've messured valve play! New valve stem is 5.94mm and guide is 6.00mm so 0.06mm play ,almost no play,and my was 0.2-0.3mm on intake and 0.3-0.5 on exhaust.
Now head is in machininst shop and probably next week i'm puting it back