When driving I experience occasional juddering (not every trip) which clears itself after a while. I first noticed it when it was cold, wet and foggy. Turning off the heater and the fog lights made the problem go away reappearing when turned back on. I tested the battery and whilst ok it did have loss of voltage and at nearly 5 years old I replaced it for a new mazda one. This did not fix the problem.
The juddering feels like a loss of power or fuel blockage, changing gear makes no difference, the car picks up after a few minutes and is fine. The juddering is not present when I first start the car it occurs after driving for a number of miles.
Mileage is 43,500 (For the last two years we have only done about 5,000 miles per annum) The car is UK 63 (September 2013)
I'm after suggestions about what it could possibly be and remedies, so far I have
1) Water in the fuel filter - replace fuel filter
2) Dirty blocker fuel jets - clean jets
The juddering feels like a loss of power or fuel blockage, changing gear makes no difference, the car picks up after a few minutes and is fine. The juddering is not present when I first start the car it occurs after driving for a number of miles.
Mileage is 43,500 (For the last two years we have only done about 5,000 miles per annum) The car is UK 63 (September 2013)
I'm after suggestions about what it could possibly be and remedies, so far I have
1) Water in the fuel filter - replace fuel filter
2) Dirty blocker fuel jets - clean jets