Ian Harvey

Thanks all for the replies the problem is fixed fingers crossed it stays that way the problem was one of the lpg injectors has failed which was causing the engine management system to cut out that coil on that cylinder which meant when I was running on petrol it was the same thanks again

So I got home and it started to develop a slight misfire so I disconnected the maf and the engine started to run smoother, would this point to a bad maf?

Hi cheers for that it also misses on petrol too so I’m not sure if it would be the lpg system, it’s just the weird thing that when it’s misfiring you switch off the ignition and back on and it’s fine I’m going to be removing and cleaning the throttle body too

Hi all new to this page, i have a issue with my 2001 x5 4.4 v8 on cold starting in a morning it runs rough but still revs fine and once warms up is fine after using the car for a while it develops a misfire like it’s dropped on 1 cylinder but when you turn the engine off then back on is fine for a bit then does it again, I’ve changed the plugs and all where fine with just a slight tan colour on the ends so all firing fine I have a set of coils on order so I will be changing those, it’s worth mentioning the car is also gas converted, when it’s not missing it drive beautiful with bags of power so I know it’s something stupid so any ideas????? Thanks in advance