Un plugging lambda/running rich - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Un plugging lambda/running rich

footah212

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Location: Paisley

Registered: 16 Sep 2010

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Post #1

Should there be a noticable difference in the way the engine runs when the lambda is unplugged?

I'm trying to solve the cause of the car running rich.

Already replaced the CTS and Map sensors. Changed the lambda for one of unknown history about a month ago but still stinks of petrol and I'm getting s**T mpg. So I'm wondering if its fubar.

Car runs absolutely fine. I can't see any leaks anywhere.

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Posted 11th Feb 2013 at 14:20

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #2

If the car runs fine then it's unlikely to be at fault. Does it run fine low down with no bogging etc?

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Posted 11th Feb 2013 at 16:48

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footah212

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Location: Paisley

Registered: 16 Sep 2010

Posts: 861

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Post #3

stan_306gti6 wrote:

If the car runs fine then it's unlikely to be at fault. Does it run fine low down with no bogging etc?

Yes runs fine, sweet in fact since a recent engine transplant. Ill try another ecu reset, not done that since swapping the other sensors.

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PS3 - Black Ops 2

Engine crane for hire Renfrewshire

Posted 11th Feb 2013 at 17:11

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jamiek_uk2000

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Location: Llanelli

Registered: 18 Apr 2009

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Post #4

Stop booting it everywhere Smile

Mine is lucky to get 20 MPG

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Posted 11th Feb 2013 at 19:20

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beez_neez_gt

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Post #5

Interesting as iv unplugged lambda, spark plugs are very sooty running rich and have what is called as bogging or low rev hesitation to go up to higher revs.

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Posted 18th Feb 2013 at 21:28

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footah212

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Location: Paisley

Registered: 16 Sep 2010

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Post #6

beez_neez_gt wrote:

Interesting as iv unplugged lambda, spark plugs are very sooty running rich and have what is called as bogging or low rev hesitation to go up to higher revs.

Took the car to the gym sunday morning and found my clothes were stinking of petrol when i was getting changed back in to them. I have done another ecu reset using the welly FAQ method[it was worth a bash!!] but I recon its still running rich but no bogging down at low revs Dunno

. Last time I left it running with the wife's white cmax behind it ,the front bumper of her car had a soot mark left on it. So fairly sure the plugs will be sooted up too.

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PS3 - Black Ops 2

Engine crane for hire Renfrewshire

Posted 19th Feb 2013 at 06:31

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beez_neez_gt

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Post #7

I did smell fuel in engine bay once and there isnt a fuel smell inside inlet pipe that plugs into the fuel regulator. There is also suction at the top vac pipe plug too.

Do you have a lightened fly wheel because that might be the reason for the bogging not sure about running rich though?

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Pug fee`ver,

Pick a Bogey, buy a Pug.

Black 306 GTI 6 Standard, was 60k mileage, bargain!!

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Posted 19th Feb 2013 at 07:01

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footah212

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Location: Paisley

Registered: 16 Sep 2010

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Post #8

beez_neez_gt wrote:

No bogging Down bud standard flywheel too

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PS3 - Black Ops 2

Engine crane for hire Renfrewshire

Posted 19th Feb 2013 at 07:04

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beez_neez_gt

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Post #9

Id like to know too why its running rich with lambda unplugged like mine too.

________________________________________

Pug fee`ver,

Pick a Bogey, buy a Pug.

Black 306 GTI 6 Standard, was 60k mileage, bargain!!

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Posted 19th Feb 2013 at 07:07

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footah212

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Post #10

beez_neez_gt wrote:

Id like to know too why its running rich with lambda unplugged like mine too.

What happens when you plug it back in?

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Phase 2 Blaze GTi6

PS3 - Black Ops 2

Engine crane for hire Renfrewshire

Posted 19th Feb 2013 at 07:28

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beez_neez_gt

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Post #11

Ill try that later on, however before i did all the other changes and tests the engine did cut out on its own accord after a few minutes. This may have changed by replacing the ICV CTS etc.

Will let you know later.

________________________________________

Pug fee`ver,

Pick a Bogey, buy a Pug.

Black 306 GTI 6 Standard, was 60k mileage, bargain!!

Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & =

Posted 19th Feb 2013 at 07:45

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