Would you mind sharing a video of the smoke? I noticed it is normal a white steam when the weather and the engine are cold.
Not getting any warning engine lights showingGet it checked for codes etc. Black normally is a result of way too much gas or lack of air. Very rich mixture.
It can mess up the catalytic converter so don't run it too much or you'll need a replacement.
Thanks Tom. for your reply I was thinking the same thing, if there is no codes showing / engine light it would be very hard to guess which sensor is acting up.. I was told there are about 6 sensor under the hood that may cause this including the injectors & air filter which has been replacedNormally if you are getting black smoke out the tailpipe, there would be a check engine light because the delta between the fore and after O2 sensors would be way off. Is there soot inside the tailpipe? Obviously the dealer is the best place to get this addressed ASAP.
Hi Acanderson...Thanks for you input...Time is about 2 min; before 'Black Smoke Subsides & that from a cold start up. Going to give the Map Sensor & cleaning & see if that helpsAgree with posts above. Black smoke, if that's really what it is, is typically indicative of a seriously over-rich mixture. The ECU will always try to manage fuel trim to prevent this, and if it cannot, the forward O2 sensors will be driving the ECU to the far limits of the fuel trim tables and a code will appear as a result.
During cold start, the engine is allowed (in fact, is expected) to run a bit rich and a bit high in RPM, but is not normally enough to cause 'black smoke' as a result, even if the catalyst isn't up to temperature enough to burn off any remaining hydrocarbons in the exhaust.
Like others, I'd be interested in a video if you can get someone to take one while you perform a cold start and wait whatever time until the 'black smoke' subsides. How long is this time, typically?
Yup. My guess is that it's always running out toward the far rich end of the trim table (but still barely within bounds, hence no codes) on one or more cylinders during normal operation, and that after two minutes of idling, the cats are hot enough to hide the evidence.+1 on above, at initial startup engine is in open loop (O2 sensor feedback is disabled/open) and the PCM is running on stored historical fueling trims.
thanks Spicy for your input..I've ben thinking along the same line, just waiting for my gas tank of fuel to get a little lower so I can fuel up with a high grade of fuel. Also have be using Lucas Fuel additive for some time ..I personal do not give much for these prod; because todays fuel do have it own additives that do the same jobIt should throw a code if the ECU detected anomalies. If the issue persist it should show the code sooner or later. For the meantime you need to make a quick remedy otherwise just wait. If it happens to me, I will do some quick actions such as; 1) add fuel injector cleaner. 2) Change oil into thinner specs 3) use mid grade or premium gas. Good luck!
Tks Tripplec for you input...Stop using the Lucas additive. Isn't needed at all with any name brand gas!! It could be the cause as no additive is advised full time and complicates assessment. Modern gas from Shell, Mobil have highly engineered additives standard as do other Top Tier Gas brands.
Hi Ron ..Never heard of that brand of additive but will take your advise for the future if needed. ..like I said it's only one tank of fuel.. I also buy my fuel from Costco but just the 87 octane.. Again Costco buys there fuel from different suppliers depending were there pumps /warehouse is located & the were tank farm are not sure if Costco has higher spec; for there fuel ..but I will be trying there Higher brand on my next tank..Many folks in the US don't like Lucas products, but the high Amazon reviews suggest that they're good.
A few car manufacturers recommend Techron, including Kia, but its debatable what level of confidence that should add.
I seldom use it because I exclusively use Costco Top Tier Gas.
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For sure Costco only dispenses top tier gas in the US stations. They may get it from different jobbers, but it is still top tier which is mostly because of the Techron formula added to the fuel at the specific refinery (believe only Chevron stations can use the name Techron). Unknown about Canada although suspect their contract is very similar to the rest of North America. Premium has no more of this additive then regular and it's only helpful characteristic is to slow the flame front in high compression and turbo engines.Hi Ron ..Never heard of that brand of additive but will take your advise for the future if needed. ..like I said it's only one tank of fuel.. I also buy my fuel from Costco but just the 87 octane.. Again Costco buys there fuel from different suppliers depending were there pumps /warehouse is located & the were tank farm are not sure if Costco has higher spec; for there fuel ..but I will be trying there Higher brand on my next tank..