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displaying posts 1 to 9 of 9
| Author | Subject: causes for overfueling? |
 jimmyhackers
Seasoned Pro  Location: birmingham Registered: 14 Jun 2011 Posts: 1,149 Status: Offline |
Post #1
beside the lambda and the green coolant sensor.what else could be causing an overfueling issue? my exhasut smells rich and a little like marzipan. it barely got through emissions. ________________________________________ the world is changed by people in sheds |
 Posted 16th Jan 2016 at 17:30
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superchargedblack1997gti6
Seasoned Pro  Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #2
Is it using Oil? ________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
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Posted 16th Jan 2016 at 18:21
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mocinim
Seasoned Pro  Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #3
Map sensor and icv replacement did a great deal for my smelly pipe Icv and lambda did the best of it then a new map sensor regular use getting the exhaust nice n hot helps to clean the cat all should help and hopefully cure Presuming the engine is good no leaks etc ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 16th Jan 2016 at 18:40
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jimmyhackers
Seasoned Pro Location: birmingham Registered: 14 Jun 2011 Posts: 1,149 Status: Offline |
Post #4
no oil. my lambda is pretty new. i have a new green coolnt sensor on the way. might try a map sensor see what happens.did you notice much difference in peormance or throttle response etc when replacing the map sensor? ________________________________________ the world is changed by people in sheds |
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Posted 17th Jan 2016 at 22:43
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mocinim
Seasoned Pro Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #5
Yes mate not real change in power overall but the engine runs smoother feels better generallyIs your lambda bosch if you have used an alternative this could still be the issue ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 17th Jan 2016 at 23:01
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jimmyhackers
Seasoned Pro Location: birmingham Registered: 14 Jun 2011 Posts: 1,149 Status: Offline |
Post #6
just took my throttle body off today (to get access to the map sensor)and noticed it weas rather sooty/oily inside.   so i gave it a little clean with some isoropyl and tis all shiny.. on the inside anyways (including icv)  then, in taking it apart etc..... i realised there was a vaccum leak.... in the shape of the oil breather pipe bypass thingy. green circle is where the leak is, red is where that pipe goes onto. while the enginei was running blocking this with my finger made my idle dropp slightly so it has some effect. ive now put a bolt into the pipe (going towards throttle body) so its blocked and no vaccum leak. firstly....is this dangerous for my engine? do i need this extra oily air bypass? secondly....could this be a cause for my overfueling? ________________________________________ the world is changed by people in sheds |
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Posted 20th Jan 2016 at 18:01
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mocinim
Seasoned Pro Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #7
Possible overfueling issue dont block the air intake bud not quite sure what your explaining or have done On the 6 the oil brether and the air both come through the filter mine where seperated when i first got it put it back to original made a massive difference in the way it performed helped with fuel consumption also should imagine putting yours back to how it should be will clean up your smelly pipe or at least help had induction kit on mine gave a little more top end but helped nothing with regards to management If its been sucking in air un filtered that will gunge everything up inside causing s**tty fuel management etc etc etc clean in restore to oe then see if you have issues if you still do will give you somewhere to start but will help loads ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 20th Jan 2016 at 19:34
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mocinim
Seasoned Pro Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #8
All being said im presuming it has never been remapped ?________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 20th Jan 2016 at 19:36
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jimmyhackers
Seasoned Pro Location: birmingham Registered: 14 Jun 2011 Posts: 1,149 Status: Offline |
Post #9
the brass thing ive circled in red bypasses the butterfly valve in the throttle body. it used to be connected to the oil breather hose. at that "broken" y junction ive circled in green where the leak was/is.like you said at one time all this was connected/sealed in the air intake system meaning all of it would of been at a similar pressure. but mine has been cold air induction kitted so the oil breather section was/is redundant. to the point where all it is/was doing is causing an air/vaccum leak blocking up the hole seems to of cured it...(the hole i circled in red) throttle response has improoved (far less sluggish) and it looks like my mpg has gotten better. seems like the vaccum leak was casuing my map sensor to incorrectly read the air pressure. thanks for the info ________________________________________ the world is changed by people in sheds |
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Posted 20th Jan 2016 at 23:17
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