YOOT

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.

Martin

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!

__________________
1993 ED XR6 M5 (1 of 329)
Polynesian Green
Turbo on the way!!
1993 EBII Fairmont (Now wrecking, PM if you want any parts)
1988 Nissan R31 Skyline

YOOT

You recon just stick to regular unleaded? Or change the premium brand?

image

Might have a faulty coolant sensor? Check the ecu for errors.

Martin

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.

__________________
1993 ED XR6 M5 (1 of 329)
Polynesian Green
Turbo on the way!!
1993 EBII Fairmont (Now wrecking, PM if you want any parts)
1988 Nissan R31 Skyline

EA90

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.

YOOT

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.

EA90

You dont have to do anything to the ECU to tune a car for higher octane fuel!

YOOT

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?

Knight

try Synergy 8000

i find it nicer