Opinions on whether toscrap or overhaul engine e90-320

[slipperdan]

Hi all, my 2007 320 is losing engine oil rapidly (~1L//1000KM) evevn though I got my valveseals changed at WS just over a month ago.

Brought for second opinion and was told either 1) last WS never do properly so its the seals again or 2) pistons are damaged so overhaul engine.

I'm hoping its 1) because thats the cheapest. But if it isnt then I'm left with the choices:

1) Overhaul engine costs 5x more
2) Scrapping now would lose me 20x.
3) Continue filling 1L/1000km but that's expensive and will probably destroy something before COE runs out.

Thinking of overhaul then renew 5y COE. Any opinions? Eg. does it sound like a good idea given estimated transmission life?

 

[playstation76]

Re: Opinions on whether toscrap or overhaul engine e90-320

Hi all, my 2007 320 is losing engine oil rapidly (~1L//1000KM) evevn though I got my valveseals changed at WS just over a month ago.

Brought for second opinion and was told either 1) last WS never do properly so its the seals again or 2) pistons are damaged so overhaul engine.

I'm hoping its 1) because thats the cheapest. But if it isnt then I'm left with the choices:

1) Overhaul engine costs 5x more
2) Scrapping now would lose me 20x.
3) Continue filling 1L/1000km but that's expensive and will probably destroy something before COE runs out.

Thinking of overhaul then renew 5y COE. Any opinions? Eg. does it sound like a good idea given estimated transmission life?

Get the ws to redo the seals?

 

[Benno]

Re: Opinions on whether toscrap or overhaul engine e90-320

If there are no visible oil leaks ask the wkshp to re-do the seals, how is the exhaust smoke levels?if oil burns it will emit white smoke( no matter piston ring or v/v seal) do not scrap. try until you succeed, i know a wkshp where a neat work can be done. No harm in 3rd opinion.

 

[cubic_nz]

Re: Opinions on whether toscrap or overhaul engine e90-320

Have you had an engine compression test done? I think that should tell you if the piston rings are at fault.

 

[ozipo]

Re: Opinions on whether toscrap or overhaul engine e90-320

Scrap should be last option.

 

[Benno]

Re: Opinions on whether toscrap or overhaul engine e90-320

Getting engine compression test done is a good option , but there is a catch, compression can show low if there is a leak in valve seating, to make sure sure it is valve seating and not piston rings , the only way is to remove plug and force compressed air into cylinder and listen to exhaust very closely , if u hear air leaking sound from exhaust then it is pretty sure it is the valves and not piston. then to make sure it is the piston rings ,there are 2 types of compression test ( dry and wet test) take compression reading first and then pour little oil into the cylinder and do another test , if the reading is different and with oil, the reading is more, then it is sure that the piston ring is at fault. Once more, Maximise your preventive maintenance to minimise repairs. Tq.

 

[Benno]

Re: Opinions on whether toscrap or overhaul engine e90-320

renewing coe for 5 yrs is a waste. if u do it fr 10 yrs u can sell later for good price.