Question about glowplugs 535d
02-14-2009, 04:22 AM
#1
Members
Thread Starter
Join Date: Feb 2009
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
I have had several diesel cars lately and now this 535d. All other cars when I put the key to ignition and turn on ignition there is a symbol, like a spiral, showing that the glow plugs is heating. WHen it goes out the car is ok to start. I have seen this spiral in te little display between the speedo and rev-counter on my 535 only 2 or 3 times, even if there has been cold outside over night and starting.
So quetion is, do the glowplugs start heating whenever / as soon as the car goes out o sleep-mode? (As soon as I unlock it)?
And if so why do I get this symbol this 2-3 times when I saw it?
So quetion is, do the glowplugs start heating whenever / as soon as the car goes out o sleep-mode? (As soon as I unlock it)?
And if so why do I get this symbol this 2-3 times when I saw it?
02-14-2009, 09:09 AM
#2
Senior Members
Join Date: Oct 2007
Location: UK
Posts: 288
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2007 E61 M5, 1989 Z1
I've seen the exact same behaviour and suspect it only happens on the coldest of morning (-3 or 4 C) when the glow plugs can't quite finish their work before you go to start the car. I would guess they start up as soon as the car is unlocked (as does the fuel pump I think).
02-14-2009, 09:43 AM
#3
Contributors
Join Date: Oct 2008
Location: london england
Posts: 852
Likes: 0
Received 0 Likes
on
0 Posts
most common rail diesel engines (although they have them) dont need the glow plugs to start the car...the high compression and high pressure "mist" from modern common rails are enough to create the required compression / mixture.
if temp drops low enough they will come into force, but the BMW engines today are not like diesel's of old where you had to wait a few seconds before cranking the car.
not a compleate explanation, but thats roughly whats happening.
if temp drops low enough they will come into force, but the BMW engines today are not like diesel's of old where you had to wait a few seconds before cranking the car.
not a compleate explanation, but thats roughly whats happening.
02-14-2009, 09:57 AM
#4
Members
Join Date: Jan 2009
Location: County Durham UK
Posts: 96
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: BMW E61 525DSE Auto Touring.
2004 54 plate
Metalic saffire Black,
Active Steering.
18 Inch Style 124 Alloys,
falken 452s
Beige Leather
Dark Poplar Wood Trim
xenon bulb upgrade
blutooth phone prep
Originally Posted by Dr Dave' post='792813' date='Feb 14 2009, 06:43 PM
most common rail diesel engines (although they have them) dont need the glow plugs to start the car...the high compression and high pressure "mist" from modern common rails are enough to create the required compression / mixture.
if temp drops low enough they will come into force, but the BMW engines today are not like diesel's of old where you had to wait a few seconds before cranking the car.
not a compleate explanation, but thats roughly whats happening.
if temp drops low enough they will come into force, but the BMW engines today are not like diesel's of old where you had to wait a few seconds before cranking the car.
not a compleate explanation, but thats roughly whats happening.
Thread
Thread Starter
Forum
Replies
Last Post