Missing and backfire

[shane@mbtech]

Originally Posted by Equinox

Well done youve passed your level one in using the quote facility.....

ill get my coat and leave now... !

No, please stay, you can learn some more

[shane@mbtech]

And it might have nothing to do with hg and compressions.

But I would most definitely be checking them.

[BADCSL]

went to the workshop this morning.

The mac is telling me that the intake flap is jamming.

The motor on the airbox is turning the flap to open and close but when its closes then it closes to much casuing it to stick.
He made mention that the shaft that holds the flat could be worn out causing it to stick.
He now suggests to remove the flap and sand it down slightly to arrow easy opening and closing.

btw, the computer is no longer showing any faults after changing the coil packs from Bremi to Bosch. told them to change all the plugs as well.

hope this works out...

[alexk]

Did you do the compression test ?

I don't see how a stuck flap would cause misfires to the engine.

[BADCSL]

Originally Posted by alexk

Did you do the compression test ?

I don't see how a stuck flap would cause misfires to the engine.

its no longer the misfire. the misfire is sorted.

this is a lack of power at certain times and slight jerk.

[shane@mbtech]

Originally Posted by BADCSL

went to the workshop this morning.

The mac is telling me that the intake flap is jamming.

The motor on the airbox is turning the flap to open and close but when its closes then it closes to much casuing it to stick.
He made mention that the shaft that holds the flat could be worn out causing it to stick.
He now suggests to remove the flap and sand it down slightly to arrow easy opening and closing.

btw, the computer is no longer showing any faults after changing the coil packs from Bremi to Bosch. told them to change all the plugs as well.

hope this works out...

On one cylinder or them all?

Are you talking about the throttle butterflies or the carbon airbox flap?

At what throttle load?

What revs?

Sport on/off?

[alexk]

Originally Posted by BADCSL

its no longer the misfire. the misfire is sorted.

this is a lack of power at certain times and slight jerk.

Hm.
I am not sure you are following the advice of other people here, especially experienced ones. You are asking for opinions and then telling us something else.

Lack of power and being jerky are not really symptoms of a stuck flap.
In my opinion, finalize some things instead of going after new stuff.

Lawsy is asking you about the intake flap because the flap opens at different RPM when sport is on or off.
The BMW GT1 has a test for the flap, your dealer could play with this to actually see if the flap is getting stuck or not.
I haven't heard of a stuck flap that needs sanding down to run smoothly.

[AlexGTT]

Get on the phone and instruct them to do a comp test asap.

[alexk]

Originally Posted by AlexGTT

Get on the phone and instruct them to do a comp test asap.

I know where this is going to go !
In the end they will strip out the differential [ as it was another issue ]; they will be puzzled and final strike is going to be the compression test, where they will realize that the flap, microfilter, relay, fuel filter, wheel speed sensor and differential were all fine...
But the headgasket was gone

[hoshy]

Interesting thread... subscribing.