pippin
Member
Registered: 27th Jan 09
Location: inverness-scotland
User status: Offline
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right this problem has been hapening awhile now ,when idling my car reaks of unburnt fuel and emits white smoke even when hot ,the corsa is x16xe with powerbox inlet ,4branch decat etc ,now the lambda isnt old,and iv replaced the coolant temp sensor ,map,and iv even done the head gasket and got the head rebuilt ,plus its had a good service ,does my car need a remap cause of the inlet being fitted?? or have i maby fitted somthing wrong in doing the inlet? just its only done this since doing these mods,and the smoke and the fuel use is doing my head in ,any help is much appreciated.
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AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
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Check the spark plugs, are they black and sooty?
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pippin
Member
Registered: 27th Jan 09
Location: inverness-scotland
User status: Offline
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yes mate just had a look there black and sooty ,whats your verdict ?
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AshWatson
Member
Registered: 18th Jun 10
Location: West Yorkshire
User status: Offline
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personally if there black and sooty and importantly dry ? id say its running too rich, maybe worth checking your air filter isnt dirty and blocked ? and that its getting a good clear flow of air to it assuming ur not on standard airbox ?
usually when a plug is black its from the engine running too rich, meaning not all of the fuel is combusting and burning in the cylinder therefore ur getting a petrol smell from ur exhaust
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AshWatson
Member
Registered: 18th Jun 10
Location: West Yorkshire
User status: Offline
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maybe ask somewhere about running different spark plugs ? perhaps the next 1's up in the heat range so they plugs burn hotter and burn off fuel more effiecently, not saying these ARE your problems just trying to help n all 
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pippin
Member
Registered: 27th Jan 09
Location: inverness-scotland
User status: Offline
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filter is fine not old and im running standard airbox,yea ano what your saying mate il look into it thanks for your help
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AshWatson
Member
Registered: 18th Jun 10
Location: West Yorkshire
User status: Offline
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no problem mate  just another thought...maybe bcos your running a 4 branch and de-cat obviously this helps to get rid of the engines gases quicker allowing the engine to get more in more out faster etc, and ur running a powerbox inlet which is there to suck more air smoother and flow better to the engine getting air in quicker, exhaust getting it out quicker, maybe a standard airbox is too restrictive for ur setup ? even if modded/ de-restricted, just a thought anyways mate lol
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beef27
Member
Registered: 2nd Feb 10
Location: Stoke-on-Trent
User status: Offline
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mine does this too with the same mods.do u have egr and sai blanked?
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