Probably have a bad ignition coil Which cylinder is not firing?
A cylinder misfire can be cause by a bad spark plug or a bad fuel injector. Replace the spark plug to see if the problem is corrected.
injector problem
injector prob if a diesal
Stuck open injector, severe misfire, failed oxygen sensor, etc.Stuck open injector, severe misfire, failed oxygen sensor, etc.
It runs down past the piston rings. It may be a misfire or leaking injector.It runs down past the piston rings. It may be a misfire or leaking injector.
Theres three coil packs; one fires two cylinders. I suppose if one is bad then it could cause the two corresponding to misfire. I had one cylinder misfire, it turned out to be the fuel injector.
if its only on idle it sounds like a bad injector
It could.
the misfire is caused by oil getting into the injector wiring harness that is located underneath the rocker cover replace this harness cost from the dealers is around £40 pull the plug off of the ecu which is located behind the battery under the battery cover clean the ecu plug out with either brake or carb cleaner refit plug back to ecu this along with your new injector harness will cure the misfire a very common fault on the td5.
In the past I have had an engine misfire due to a bad fuel injector. hope this helps.
If it has a circuit malfunction, or is causing a misfire.
Could be a faulty spark plug or fuel injector for that cylinder. Try getting a new set of spark plugs and add premium octane fuel for a cleaner engine.