A rough or unstable idle may be noted due to an intake manifold vacuum leak. Our technicians tell us a revised intake manifold gasket, along with manifold bolt flat washers which will better distribute the clamping force are available to correct this concern.Google+
Car Problem Reports
Land Rover Range Rover A Rough or Unstable Idle Due to Intake Manifold Vacuum Leak
Land Rover Range Rover Problem
Average Mileage: 151,884 mi (124,000 mi - 179,769 mi)
Visitor, 1997 Land Rover Range Rover, 179,769 mi
When starting my range Rover I always see a black smoke comming from the tail pipe and it has a fuel like smell and it just recently start doing this at the beginning of this year and the check engine light is on , But my truck driver normal and it also burns a lot of gas from time to time!
a rough or unstable idle due to intake manifold vacuum leak