I have for a while now had a problem with my check engine light. I did a diagnosis and got missfire cylinder 1 and 3.
I changed the plugs it came back had it reset it came back again with same codes so i swapped coil packs over and hoped the codes would change next time the light came on to 2 and 4 but low and behold no the same codes.
Now im really confused can anyone on here shed any light on this please

 

Hi Mark, get the car booked in at Thwaites Developments, they are specialists and should sort you out.
With all due respect we could be guessing all day what the problem could be.

Thwaites: 01926 403 889 (Mark)

tell him WMI sent you

 

inlet or breather vent prob as in leak or loss gives the codes for one side of engine i remenber a car with a similar prob a few years ago it was practicly stripped trying to solve it turned out to be a hairline crack in the inlet manifold ..
not saying that is your brob but worth keeping in mind

 

cheers guys for the info will give Thwaites a ring and see what they say