Mjtray
1st November 2011, 06:33 AM
Hi
I'm based in the UK and have a 1999 2.8 TD Patrol with 93,000 miles on the clock....i've recently bought this Patrol, having had others in the past.
This one is doing something weird....when you drive it, there seems to be a rythmic surge to it...ie when accelerating or just driving on a light throttle, the engine will be lovely and smooth and then 3 seconds later you will get a diesel rattle, back to smooth, then 3 seconds later a diesel rattle and so on. When the rattle happens the car will lose a fraction of acceleration so you get this very slight surging sensation.
When I followed the car being driven by someone else, I also noticed a puff of black smoke every time it gets the diesel rattle.....I'm assuming that the rattle is potentially being caused by it overfuelling, which probably accounts for the black smoke.
Any thoughts on this.....a mechanic I know who does nothing but Land Rovers thought it may be a split vacumn hose and the surging is being caused by the injection system coming upto pressure, then loses it, comes back upto pressure, loses it etc etc and when it loses it, it momentarily over fuels.
Any help or thoughts would be much appreciated.
I'm based in the UK and have a 1999 2.8 TD Patrol with 93,000 miles on the clock....i've recently bought this Patrol, having had others in the past.
This one is doing something weird....when you drive it, there seems to be a rythmic surge to it...ie when accelerating or just driving on a light throttle, the engine will be lovely and smooth and then 3 seconds later you will get a diesel rattle, back to smooth, then 3 seconds later a diesel rattle and so on. When the rattle happens the car will lose a fraction of acceleration so you get this very slight surging sensation.
When I followed the car being driven by someone else, I also noticed a puff of black smoke every time it gets the diesel rattle.....I'm assuming that the rattle is potentially being caused by it overfuelling, which probably accounts for the black smoke.
Any thoughts on this.....a mechanic I know who does nothing but Land Rovers thought it may be a split vacumn hose and the surging is being caused by the injection system coming upto pressure, then loses it, comes back upto pressure, loses it etc etc and when it loses it, it momentarily over fuels.
Any help or thoughts would be much appreciated.