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Old 06-27-2002, 22:46   #1 (permalink)
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Black soot in exhaust - carbon clean?

I noticed my fairmont puffs a tiny (almost invisible) cloud of black smoke (soot?) out of the exhaust on start up. Is this just a sign that I should get a full carbon clean in the engine, like the injectors etc...?

My engine has only done 115,000kms and service in the last 1000kms. I also have a batch of Optimax in the tank too. Not sure if that has anything to do with it.
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Old 06-27-2002, 23:59   #2 (permalink)
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Mine did that with a batch of optimax, ran real rough for the first 10-15secs when dead cold with black smoke out the exhaust. Filled up with a different brand and it went away!
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Old 06-28-2002, 00:04   #3 (permalink)
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You recon just stick to regular unleaded? Or change the premium brand?
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Old 06-28-2002, 16:07   #4 (permalink)
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Might have a faulty coolant sensor? Check the ecu for errors.
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Old 06-28-2002, 20:28   #5 (permalink)
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Quote:
Originally posted by 94ED_Fairmont
You recon just stick to regular unleaded? Or change the premium brand?
I always run premium as I get better economy with it, Optimax may not be causing it at all but it would be worth a try to see if it still does it with another brand.
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Old 06-28-2002, 21:57   #6 (permalink)
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Yeah bud i run my car on optimax have been for the last 18 months ive owned it. I replaced my oxygen senor due to its fault and now i get hardly and black soot on my exhaust. Also take your car to a mechanic and get it tuned for optimax.
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Old 06-29-2002, 00:35   #7 (permalink)
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ok - so I can:

a) Check the ECU for errors(how?)
b) Have the ECU reprogrammed to take optimax or do I get a unichip etc...?

How much am I looking at for these options, also are any of these covered by warranty if faulty. I have 12 months on most things.
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Old 06-29-2002, 21:36   #8 (permalink)
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You dont have to do anything to the ECU to tune a car for higher octane fuel!
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Old 06-30-2002, 16:03   #9 (permalink)
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Thats what I thought - the ony thing you can do is get a 'powerchip' of sorts and remap the fuel curve and advance more precisely than the ECU already does with Hi-Oct fuel. Right?
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Old 07-01-2002, 08:35   #10 (permalink)
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try Synergy 8000

i find it nicer
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