How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Greg Your Own Question
Greg, Technician
Category: Car
Satisfied Customers: 7269
Experience:  Automotive diagnostic tech
Type Your Car Question Here...
Greg is online now

hi my london taxi tx4 2011 is juddery and pluming black smoke

Customer Question

hi my london taxi tx4 2011 is juddery and pluming black smoke intermitantly
Submitted: 5 years ago.
Category: Car
Expert:  Greg replied 5 years ago.

If your taxi is smoking intermittently then this may be due to the fact you have a intermittently malfunctioning MAF sensor ,

In some cases the check engine will come on and off intermittently also .

Have a diagnostic scan done and see if there is any stored codes .
these codes will help you locate the problem .

When a diesel engine burns black smoke this is due to the engine not getting enough air or too much fuel , so check the air filter for blockage,or any inlet air restrictions.

Need further assistance with this issue then please get back to me .

Kindest regards Greg