Car had slight misfire on start up and reduced engine performance message came up. As the car is a 2007 model, I replaced the auxiliary coolant pump, message is gone and car felt better.

However this morning the misfire seems worst than it was before although the "reduced engine performance" message is gone. The error codes are:
- p0302
- p0304
- p0306
-p0300

The above relates to multiple misfire, misfire on cylinders 2, 4 and 6 as well as at startup.

Also had (in the last year) the following done to resolve the issue:

- spark plugs - replaced a week ago
- ignition coils -moved around to check if misfire would go where "faulty" coil was moved; no joy as misfire was still at the same cylinder
- injectors - same as per ignition coils
- did compression test - according to both LR dealer and indie compression on all cylinders are ok

Had cats removed and engine remapped, although the misfire stems from before the afore-mentioned.

Help is appreciated as I'm at my wits end with this car