Back fire and miss fire

**Mark CSL** · 01-12-2007, 07:51 PM

The CSL was back fireing when cold and missing when i went to give it the beans.

Took it to bmw today, turns out to be the flap on the airbox,
pontomiter fault.It gave the tec date time and air temp inside and out,
cool machine they have reset the fault codes and said if it does it again
i shall need a new Pontomiter , and then if still the same i need the flap motor.

Pontomiter £47 + vat

Flap Motor £80 + vat

PART 3 AND 4 OF THE PIC

We shall see how it goes
I have cleaned the conectors for the 2 things to see if this helps

M3CSLIRL · 02-12-2007, 03:25 PM

Would Warrenty of covered this??

DBT40 · 02-12-2007, 04:20 PM

warranty is a waste of money if you know your car.

What's a pontomiter?

Can't these just be removed to run without the flap?

**Mark CSL** · 02-12-2007, 05:30 PM

yes they will cover it under warranty but it might have been a bad conection

Yes it will run without the flap but why would they have fitted 1 if it did not need it

M3CSLIRL · 02-12-2007, 07:56 PM

Very True!! I have heard of this flap giving problems before! What are the tell tale signs??? apart from the missfire n splutter?? I thought myself the Sport Button opened the flap to make the car more responsive

DBT40 · 02-12-2007, 08:53 PM

wouldn't want to loose it as I like the non sport response for in traffic, but I know some owners have discarded it and was wondering what the effect was?

01-12-2007, 07:51 PM	#1
Mark CSL CSL Register Uber-poster! Join Date: Sep 2007 Location: Scotland Posts: 8,777 Casino cash: $42229	Back fire and miss fire The CSL was back fireing when cold and missing when i went to give it the beans. Took it to bmw today, turns out to be the flap on the airbox, pontomiter fault.It gave the tec date time and air temp inside and out, cool machine they have reset the fault codes and said if it does it again i shall need a new Pontomiter , and then if still the same i need the flap motor. Pontomiter £47 + vat Flap Motor £80 + vat PART 3 AND 4 OF THE PIC We shall see how it goes I have cleaned the conectors for the 2 things to see if this helps __________________ www.procarkits.co.uk

02-12-2007, 03:25 PM	#2
M3CSLIRL S5 - Full Throttle Join Date: Nov 2007 Location: Ireland Posts: 330 Casino cash: $426	Would Warrenty of covered this?? __________________ "Power is nothing without Control"

02-12-2007, 05:30 PM	#4
Mark CSL CSL Register Uber-poster! Join Date: Sep 2007 Location: Scotland Posts: 8,777 Casino cash: $42229	yes they will cover it under warranty but it might have been a bad conection Yes it will run without the flap but why would they have fitted 1 if it did not need it __________________ www.procarkits.co.uk

02-12-2007, 07:56 PM	#5
M3CSLIRL S5 - Full Throttle Join Date: Nov 2007 Location: Ireland Posts: 330 Casino cash: $426	Very True!! I have heard of this flap giving problems before! What are the tell tale signs??? apart from the missfire n splutter?? I thought myself the Sport Button opened the flap to make the car more responsive __________________ "Power is nothing without Control"

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02-12-2007, 04:20 PM	#3
DBT40 S2 - Picking it up Join Date: Sep 2007 Location: Scotland Posts: 56 Casino cash: $418	warranty is a waste of money if you know your car. What's a pontomiter? Can't these just be removed to run without the flap?

02-12-2007, 08:53 PM	#6
DBT40 S2 - Picking it up Join Date: Sep 2007 Location: Scotland Posts: 56 Casino cash: $418	wouldn't want to loose it as I like the non sport response for in traffic, but I know some owners have discarded it and was wondering what the effect was?