can anyone guide me in the right direction? 
my m40 has a hard time ticking over when cold, and sometimes cuts out when pulling up to traffic lights.
i'm straining the alternater a bit with two batteries(1 on switchable charge), which pulls the revs down a touch.
but the rough cold start, and lumpy running after a short rest period is getting on my nerves now...
so if anyone can help with some info, it would be appreciated.
dan.
			
									
									
						m40 problems.
Moderator: martauto
- 
				StefanAnghel
 - E30 Zone Camper

 - Posts: 1403
 - Joined: Tue Nov 20, 2007 11:00 pm
 - Location: Essex/Hertfordshire/London
 - Contact:
 
not 100% sure but lumpy running might be because of ICV - remove it and give it a good clean with carburator cleaner 
I'm sure that a full list of things to be checked will be posted in...seconds
			
									
									
						I'm sure that a full list of things to be checked will be posted in...seconds
idle,control valve...or the pipe that  goes to the air flow meter,,could be perished/split..
i have a few i,c,v's off m40'si'll post you two for £15 if needed...this will sort it out..
			
									
									i have a few i,c,v's off m40'si'll post you two for £15 if needed...this will sort it out..

m52 b30 stroker 6-speed 318is Galvanizer
m42 touring
+ a yard full of scrap turds
- 
				streetbassincuk
 - E30 Zone Newbie

 - Posts: 53
 - Joined: Thu Feb 21, 2008 11:00 pm
 - Location: london
 
i'll give it a blast with some carb cleaner.
any ideas on the cold start problem??
			
									
									
						any ideas on the cold start problem??
thats what it is.it sorts ya revs out when cold till warm.icv.
they do fail and cost about £100 from bmw
			
													they do fail and cost about £100 from bmw
					Last edited by magpie on Tue Dec 23, 2008 1:20 am, edited 1 time in total.
									
			
									
m52 b30 stroker 6-speed 318is Galvanizer
m42 touring
+ a yard full of scrap turds
- 
				streetbassincuk
 - E30 Zone Newbie

 - Posts: 53
 - Joined: Thu Feb 21, 2008 11:00 pm
 - Location: london
 
ok, my bad...is it not worth getting a new one? least it'l last a while...
is it causing the cutting out when i slow down as well?
			
													is it causing the cutting out when i slow down as well?
					Last edited by streetbassincuk on Tue Dec 23, 2008 1:22 am, edited 1 time in total.
									
			
									
						up to you m8,,i have 5 of thesestreetbassincuk wrote:ok, my bad...is it not worth getting a new one? least it'l last a while...

m52 b30 stroker 6-speed 318is Galvanizer
m42 touring
+ a yard full of scrap turds

