MGF running LUMPY

Hi guys,



Could do with your advice / suggestions on the current situation with a MGF 1.8 (2001) K series (Non VVC).



The car is running lumpy and misfiring through all revs, and even at idle.

The head gasket was skimmed about 4K miles ago. A week ago, the misfiring started and codes for misfire on cylinder 2 and cam sensor problem were displayed.

The cam sensor and spark plugs were changed, and the car ran fine for a day (10 miles journey). Then the symptoms returned.

Then both coil packs were changed, and then it started running fine again.. only for the symptoms to return after another day.

The Engine Management Light turned on, and the new error code now shows misfire on cylinder 1.



Also, there is a coolant leak, as it needs topping up daily, but it is not going into the engine, as the dipstick level is non changing. Therefore I think it's unrelated to the misfiring.

There is slight condensation cream on the dipstick, but none under the engine oil cap or visible in the engine. This may be due to unburnt petrol getting into the engine, due to the misfire.



What do you guys suggest as the next course of action or part replacement?



I've seen mention of changing HT Cables, o2 Sensor, and variable valve timing unit.



Any help will be much appreciated!

from the last news http://ift.tt/1ATCPeI

via IFTTT