Question about Mazda 626

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Car was stalling on standstill then when i really put my foot down i heard a crack from back of car. big cloud of black smoke out the exhust. when i stopped there was black fibre type stuff hanging out of the exhust which looked like hair. seems to be working fine now but abit worrying

Posted by aaronsking on


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Posted on Mar 15, 2018


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SOURCE: black smoke from exhaust

This is almost certainly a split hose - mine was the large hose coming out of the bottom of the EGR valve.

Speaking to a parts guy at my local Jaguar dealer, he said that the new part is uprated as Jaguar are aware that this is a problem.

The split allows more air in and results in the ECU changing the mixture and over fuelling - Black smoke is an indication of un-burnt Diesel. As well as the black smoke you may also notice a whistle/whine or sucking noise when you accelerate and a lack of power / lumpiness at around 2000rpm.

Hope that helps!


Posted on Aug 01, 2008



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SOURCE: renault laguna 1.9 dti blowing black smoke when it is accelerating

Try replacing the fuel filter, also add a fuel injector cleaner to your gas tank. If not have a shop clean out your trottle body.

Posted on Sep 18, 2008


  • 128 Answers

SOURCE: 1999 Volvo S70 Stalls at stop signs and traffic lights

These models had a problem with the electronic control modules, and this is what controls the idle speed. Sometimes they just need to be cleaned, but sometimes they are defective. Volvo has extended the warranty on some of them to 10 years or 200,000 miles if it is found to be defective.

Posted on Jan 06, 2009


  • 1 Answer

SOURCE: Slow Jaguar x type

check your intake manifold for leaks if you recently had your spark plugs change, or it could be incorrect spark plugs, or bad temperature senser.

Posted on Mar 06, 2009


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SOURCE: peugeot 407 2.0 hdi lots of black smoke when you

The reason for the black smoke is that it is not getting enough air to burn the fuel completely.It could be a blocked air filter,obstruction in the air intake system,blown turbo,hole in tube between intake manifold and turbo,or a fault with the fuel system and injectors.

Posted on Jan 24, 2010

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I am a BMW technician and i see this problem daily. There is a filter on the top of your rockercover. it is called an oil separater or a breather filter. you can only get the filter at a BMW garage so if you go to stores and ask them for this filter they will know what you are talking about if you tell them you are after having your turbo replaced. Fit this filter and you will notice the smoke will get better if it does not go away completely you might wait another 3-4 weeks and replace it again. hope this helps.


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