Thanks guys for all your input,I will give you the update tomorrow what happens at the Bosch centre,fingers crossed they don't have to open the head

Thanks again, will take it to a Bosch centre on Monday and just get it checked properly and carry on from there

He said he thinks the previous owner only drove the car on lpg only and that may have burnt out the valve, he said he did a compression test and these are the result Bank 1 130 Bank 2 140 Bank 3 135 Bank 4 120 Bank 5 170 Bank 6 180 Bank 7 170 Bank 8 170 I don't really have any mechanical skills but ...

I have not serviced or done anything to the car yet as I just bought it
Am not sure when the last service was

Thanks for your respond the car has only done a 100000miles so I did not really understand why he is talking about the timing chain and vanos change, and he said if that does not work it has to be the valve that is collapsed ,he dies not really make any sense that's why I thought it's best to ask ...

Hi all am Jason and new to this site. I would really appreciate any help I could get from anyone with regards to an x5 4.6is I just purchased, it's got a really bad misfiring issue and also the previous owner installed lpg onto the car as well, a mechanic plugged it onto his reader and gave me some ...