Hi everyone I have recently towed my caravan on Holliday with my 2005 sharan 1.9 tdi 130 and when climbing any hills I get what seems to be a misfire and when I ease off the accelerator it improves until I accelerate again I know the car is very low geared but concerned about the misfire has any one had this problem and how to sort it out, is it built in to indicate the strain on the engine many thanks bazz
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