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Old 02 April 2006, 01:28 PM
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assam
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Default Rich or Lean

Hi all can some please tell me in the most easily understandable way how i can tell if my car is running rich or lean???

cheers
Old 02 April 2006, 01:32 PM
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TonyBurns
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If its pumping out lots of black smoke its rich plus a nice smell of unburnt petrol, carbon deposits on your exhaust after not many miles.

Tony
Old 02 April 2006, 02:14 PM
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ALi-B
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Find a mate with an exhaust gas analyser is the best way.
Old 02 April 2006, 02:22 PM
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Fuzz
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A wideband lambda meter / sensor.

http://wbo2.com/ld02/default.htm


Andy
Old 02 April 2006, 10:43 PM
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Just bought a lambda link for mine http://www.brdevelopments.com/link.html

it's not as good as using a wideband tester, but using a wideband can be expensive

Adam.
Old 02 April 2006, 10:44 PM
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assam
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cheers guys thats great, just one thing when my exhaust pops like it does sometimes thats due to unburnt fuel/carbon deposits? is it running rich then??

thanks again
Old 02 April 2006, 10:51 PM
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you cant tell by that, thats unburnt fuel when you lift off being ignited, you need to know under boost.

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Old 02 April 2006, 11:10 PM
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Fuzz
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A non wideband lambda meter is about as much use as a chocolate fireguard IMO.
Best to save your dosh and get the wideband.

Pops and bangs might be simply be an ignition timing change once you've come off the gas and the load zone moves to a different part of the map in the ECU.
Doesn't really mean much about your fueling.

Andy
Old 03 April 2006, 12:33 AM
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Andy,

what is the cost if you were to be doing 5-6k miles/year using a wideband lambda?

Thanks

Adam.
Old 03 April 2006, 12:57 PM
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assam
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very good links and info guys thanks again
Old 03 April 2006, 10:02 PM
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Fuzz
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Replied to PM as well Adam,
not sure what you mean by "cost"

Cost of product or use of it isn't relative to mileage.

Andy
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