Chris E
Member
Registered: 7th Jul 03
Location: Birmingham
User status: Offline
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As above and I mean loads of it - its leaving alot of it on my rear combat 2 bumper. Got a powerflow exhaust fitted and the engine (1.2 8v) has been decoked about 2 months back coz it was doing it then.
But now its even worse. Anyway to sort this out?
I know carbon build up happens, but not as much as this!
Appreciate any help, cheers 
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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Maybe the engine is running rich.
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Adam_lee
Member
Registered: 23rd Apr 02
Location: Manchester
User status: Offline
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I had this with my corsa. It was the performance filter. It tricks the engine into running ritch and hence you get carbon'd to fcuk. I am guessing youve got a piperx or k&n filter, take it off and see the difrence.
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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But running rich makes the car move quicker doesn't it? 
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Adam_lee
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Registered: 23rd Apr 02
Location: Manchester
User status: Offline
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Not really. The best performance will come from stoichiometric combustion. I.e. the optimum air fuel ratio where all fuel is burnt and no excess oxygen or petroleum is left. Over fueling is just a waste and will not do a thing for the performance of the car. I could go on and bore you with the science of this statment to back up my claim, but i'll spare you as I really cant be arsed
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luca2020
Member
Registered: 26th May 02
Location: Maidstone, Kent
User status: Offline
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i have same problem, and have a k&N panel filter, ill take it out and see what happens, thanx mate!
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Kris TD
Member
Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
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lol, panel filter wont do it, nor will an induction kit which sucks in hot air, lol
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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Adam_lee: i'm actually a 3rd year Mechanical Engineering student at uni
I understand exactly what you mean actually
I could calculate it! hehe
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Kris TD
Member
Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
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quote:
Originally posted by MikeH
But running rich makes the car move quicker doesn't it?
not necessarliy, actually it can slow you down.
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