My car has started to smoke in the mornings on start up, can anybody help me
Blue smoke
Moderator: martauto
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E30BeemerLad
- Married to the E30 Zone

- Posts: 16806
- Joined: Mon Mar 28, 2005 11:00 pm
- Location: Norfolk
valve stem oil seals most likely
Does it just chuck out some on startup and maybe for the first minute or so & then it's alright?
Does it just chuck out some on startup and maybe for the first minute or so & then it's alright?
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E30BeemerLad
- Married to the E30 Zone

- Posts: 16806
- Joined: Mon Mar 28, 2005 11:00 pm
- Location: Norfolk
what car/engine is it?
Stem seals can be replaced with the head in situ if you can find a way of keeping the valve from dropping down into the cylinder, one way is to connect an airline to the relevant chamber via the spark plug hole.
The usual way is to remove the head, but that of course creates more expense as you'll need a full headgasket set (which will contain the valve stem seals) plus bolts and then you end up with a new cambelt and doing the water pump whilst you're there. You're probably into £150 of parts to do it yourself. Probably a £300 job at a garage easily, unless they do it via the airline method, but they'll still want a good couple of hundred quid.
You can try a treatment I guess but i don't think they are often successful.
Stem seals can be replaced with the head in situ if you can find a way of keeping the valve from dropping down into the cylinder, one way is to connect an airline to the relevant chamber via the spark plug hole.
The usual way is to remove the head, but that of course creates more expense as you'll need a full headgasket set (which will contain the valve stem seals) plus bolts and then you end up with a new cambelt and doing the water pump whilst you're there. You're probably into £150 of parts to do it yourself. Probably a £300 job at a garage easily, unless they do it via the airline method, but they'll still want a good couple of hundred quid.
You can try a treatment I guess but i don't think they are often successful.
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E30BeemerLad
- Married to the E30 Zone

- Posts: 16806
- Joined: Mon Mar 28, 2005 11:00 pm
- Location: Norfolk
if the rest of the car is good then get another lump in there, another M40 lump isn't going to be more than £100 and if you can see/hear the engine running beforehand then it's less of a gamble on putting something in that's worse than what you've taken out
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mrLEE30
- E30 Zone Team Member

- Posts: 6589
- Joined: Tue Jan 18, 2005 11:00 pm
- Location: Sweating buckets in Bahrain
are you sure its blue smoke and not white smoke? Dont confuse blue oil smoke with white smoke due to condensation in your exhaust.
if it smokes the same once warm them begin worrying, if it is only white whispy smoke on start up when cold that quickly disappears then the condition may be perfectly normal for this time of year.
mrlee
if it smokes the same once warm them begin worrying, if it is only white whispy smoke on start up when cold that quickly disappears then the condition may be perfectly normal for this time of year.
mrlee





