Did i get bad fuel ? Car when switch on will rev 900-1100 and at same time blowing black smoke out exhaust. Have added various solutions to fuel, all only temporary solutions. WHEN TRAVELLING, inlow gears and at low revs, can be chugging along. 4,5 and 6th gears all ok. Have added solution to clean injectors, fuel filter was clean, and not clogged when checked.

Stevie C., October 2007

how do I clean fuel injectors for a diesel Renault laguna 2007 losing power in low gear

dan, August 2013

hi i have a renault laguna expresion 1.9 dci 2003 the problem is black smoke and losing power when reach 40 miles p/h.just want to get any reasons and costs.thank you!

aaarmijs2224, April 2008