Im trying all I know this weekend, My car a 2004 VW Polo 1.9tdi 100BHP, Is starting to missfire, it is quite a heavy missfire as if maybe an injector has went down.
Then..........It drives fine, mainly misses when it gets warm, and has only started on friday night. So mainly when you start from cold engine runs fine, then heats up and misses, the amount it misses can be from outright heavy chugging under acceleration, to just a little miss, but the hotter it gets or the longer journey the worse it gets. The Engine Management light will come on, and also go off eventually also.
i cannot see any visual issue, ive read about MAF Sensor and EGR Valve, Ive Also temoved the air flow meter? Which is a black box whit loads of what looks like fuel pipes, there are 6 pipes, and when you open up when the car is running there is no difference, and I feel that only two pipes have a vacum on this, on the plug side rather than the black box side if that helps.
The car has 100,000 miles on it with full service history, the fuel filter was last changed 2 months ago, and I also tried to empty the bottom of the fuel filter in case of water.
Any Idea? Is this a common issue and easy fix. Or dreaded mega cash? As Injectors appear to be mega cash
Then..........It drives fine, mainly misses when it gets warm, and has only started on friday night. So mainly when you start from cold engine runs fine, then heats up and misses, the amount it misses can be from outright heavy chugging under acceleration, to just a little miss, but the hotter it gets or the longer journey the worse it gets. The Engine Management light will come on, and also go off eventually also.
i cannot see any visual issue, ive read about MAF Sensor and EGR Valve, Ive Also temoved the air flow meter? Which is a black box whit loads of what looks like fuel pipes, there are 6 pipes, and when you open up when the car is running there is no difference, and I feel that only two pipes have a vacum on this, on the plug side rather than the black box side if that helps.
The car has 100,000 miles on it with full service history, the fuel filter was last changed 2 months ago, and I also tried to empty the bottom of the fuel filter in case of water.
Any Idea? Is this a common issue and easy fix. Or dreaded mega cash? As Injectors appear to be mega cash