Idle screw ( how many turns )

Post Sat Jun 30, 2012 3:48 pm

Hey

how many turns are your idle screw adjusted out?
I can only get my bmw to stand idle at 900 rpm, not lower? and my idle screw is adjusted only a turn out (that is screwed to the bottom and a turn out)

BMW E30 320i fra 87, (25/08/87)

Post Sat Jun 30, 2012 4:57 pm

I take it you are talking about the Air Flow Meter. The only way to set this accuratly is via a gas analyser.

Post Sat Jun 30, 2012 5:48 pm

Rtaylor2208 wrote:I take it you are talking about the Air Flow Meter. The only way to set this accuratly is via a gas analyser.

No, not my air flow meter I talking about

Post Sat Jun 30, 2012 8:33 pm

willnz wrote: Is the anti-stall unit set and working properly?

Which part is this,please?

Post Sat Jun 30, 2012 8:44 pm

This bit circled, not sure if its called that over here, prevents the throttle snapping shut

Post Sat Jun 30, 2012 8:48 pm

johnl320 wrote:

This bit circled, not sure if its called that over here, prevents the throttle snapping shut

In Europe,we refer to this as an ICV,or idle control valve,no doubt in the land that refers to gloveboxes as cubbies,it has a completely different name!

Post Sat Jun 30, 2012 9:01 pm

Its not an Idle control valve, it prevents the throttle snapping shut. By operating when a large depression is felt in the manifold when the engine revs drop and the depression reduces it moves away from the throttle control arm.

Post Sat Jun 30, 2012 10:20 pm

I would ditch that air filter first and put a standard one on.

Post Sat Jun 30, 2012 10:23 pm

900 rpm idle speed is about right on an L-Jet 320i.

Post Sun Jul 01, 2012 8:01 am

willnz wrote:Is your throttle stop screw adjusted properly? Have you checked for air leaks into the intake? Is the anti-stall unit set and working properly?

Yes, det throttle stop screw is adjusted..

johnl320 wrote:I would ditch that air filter first and put a standard one on.

I have standard filter on it, the picture was only to show the idle screw

Speedtouch wrote:900 rpm idle speed is about right on an L-Jet 320i.

Okay, thanks, the idling speed is different depending on which model it is?

Post Sun Jul 01, 2012 8:04 am

willnz wrote:Is your throttle stop screw adjusted properly? Have you checked for air leaks into the intake? Is the anti-stall unit set and working properly?

I have checked for air leaks, and it is not leaking

how can I check the anti-stall, it can move...

Post Sun Jul 01, 2012 10:10 am

willnz wrote:Does it retract away from the throttle arm when the car is idling?

It hits only the arm when the engine is off

Post Sun Jul 01, 2012 10:27 am

My Haynes manual states idle speed for L-Jet is 700-800rpm.

The idle speed adjuster is located in the air bypass, on the opposite side of the throttle body.

Post Sun Jul 01, 2012 11:22 am

willnz wrote:
Brinkland wrote:
willnz wrote:Does it retract away from the throttle arm when the car is idling?
It hits only the arm when the engine is off
Ok, that is working.

Is you throttle stop screw adjusted properly? The butterfly should only just be clear of the body when set correctly (paper thickness gap).

Yes the throttle stop screw is correct adjusted