My sister has a 92k miles clio 1.9 diesel. About a month ago it really struggled to pass the emissions section of the MOT. The bloke seemingly added some additive type stuff to lower smoke emissions and it scraped through.
The last few days its started spewing out seriously large amounts of thick black sooty smoke.
It smokes like a lum when started and whenever you boot the gas. after a few seconds idling, it leaves a sooty stain on the road!!!
It is in pretty tatty condition anyway and its injectors are suspected to be goosed.
It doesnt seem to be burning much oil.
What are possible causes of this and what is the cure, if any?
Hi ya mate sounds like it could do with a good service and a fuel filter change or a possible injector problem.It sounds 2 me like a dirty fuel filter.I know how u feel i had a zx td till last month nothing but trouble so i got a vauxhall.