YET ANOTHER PROBLEM
Discussion
finaly got car back after 5 weeks . new windscreen fitted cos they broke it checking 4 leaks.and electrical problems sorted at last.
but now i find when i start the engine it gives a puff of smoke, clears after a few seconds but dsnt look good when people r looking at the car u know.
is ther something about to go ? or should the car go ? not having much luck with it and im getting ****** off with it now. any info would b gr8 cheers kev.
but now i find when i start the engine it gives a puff of smoke, clears after a few seconds but dsnt look good when people r looking at the car u know.
is ther something about to go ? or should the car go ? not having much luck with it and im getting ****** off with it now. any info would b gr8 cheers kev.
k3v said:
not all the time. sometimes i can drive it then restart it = no smoke . then 10 mins later or at the next stop it could smoke. light blue in colour m8.
Not necisarily a problem if it's only a small puff - turbo's do this - next time you see a 911 turbo start - whatch it - they do a little puff as well...gizard said:
k3v said:
not all the time. sometimes i can drive it then restart it = no smoke . then 10 mins later or at the next stop it could smoke. light blue in colour m8.
Not necisarily a problem if it's only a small puff - turbo's do this - next time you see a 911 turbo start - whatch it - they do a little puff as well...My M12 normally puffs a bit when it's not been started in a while, but it's always done that. I'd only get worried if it's like that all the time !
A good rule of thumb is to make sure you give the car plenty of time to normalize before you park it up, drive the last 5 miles keeping the revs bellow 3K, then let the engine idle a bit before you switch it off.
When you start it from cold, keep the revs under 3K until the temp comes up. If you've not got an oil temp gauge then I'd get one, as you can see that an engine with 90 degrees on the temp gauge does not mean that the oil is up to temp. So take it easy for a few miles.
Cheers,
--Jools
joolski said:
gizard said:
k3v said:
not all the time. sometimes i can drive it then restart it = no smoke . then 10 mins later or at the next stop it could smoke. light blue in colour m8.
Not necisarily a problem if it's only a small puff - turbo's do this - next time you see a 911 turbo start - whatch it - they do a little puff as well...My M12 normally puffs a bit when it's not been started in a while, but it's always done that. I'd only get worried if it's like that all the time !
A good rule of thumb is to make sure you give the car plenty of time to normalize before you park it up, drive the last 5 miles keeping the revs bellow 3K, then let the engine idle a bit before you switch it off.
When you start it from cold, keep the revs under 3K until the temp comes up. If you've not got an oil temp gauge then I'd get one, as you can see that an engine with 90 degrees on the temp gauge does not mean that the oil is up to temp. So take it easy for a few miles.
Cheers,
--Jools
gizard said:
k3v said:
not all the time. sometimes i can drive it then restart it = no smoke . then 10 mins later or at the next stop it could smoke. light blue in colour m8.
Not necisarily a problem if it's only a small puff - turbo's do this - next time you see a 911 turbo start - whatch it - they do a little puff as well...
have a look at this Kv3, -
lots of info on different types of exhaust smoke
http://wiki.answers.com/Q/What_can_cause_white_smo...
'Blue smoke is primarily from internal engine wear. If it's constant when the engine is on, then the rings etc are worn and need to be replaced. If it only is blue when the engine is cold or first started, the rings are worn but not gone completely. You get the oil seeping during the night and it burns off when the car is started in the morning.'
lots of info on different types of exhaust smoke
http://wiki.answers.com/Q/What_can_cause_white_smo...
'Blue smoke is primarily from internal engine wear. If it's constant when the engine is on, then the rings etc are worn and need to be replaced. If it only is blue when the engine is cold or first started, the rings are worn but not gone completely. You get the oil seeping during the night and it burns off when the car is started in the morning.'
You DO need to keep the revs down when the engine is cold, not just when the gauge shows a hot engine (which it does quite quickly). It isn't a good idea to drive it hard with cold oil, this does lead to premature engine/turbo wear. Five miles is a good benchmark figure if you don't have a oil temp gauge.
Smoke on startup sounds like a turbo seal, it's probably leaking very slightly, not noticable on general running but dribbles out when you turn off and the residual pressure seeps into the downpipe.
Best way to check is run the engine so next time it will smoke and take off the downpipes and check for oil at the rear of the turbos.
Dave
Smoke on startup sounds like a turbo seal, it's probably leaking very slightly, not noticable on general running but dribbles out when you turn off and the residual pressure seeps into the downpipe.
Best way to check is run the engine so next time it will smoke and take off the downpipes and check for oil at the rear of the turbos.
Dave
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