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                         Hi, I have a Renault Mégane 1.5 dci 2007/57 
The check injection keeps showing up, I have had the 4 injectors changed, changed all the glow plugs, changed the fuel filter and the air filter. The code was wiped. Happy that the problem was now sorted. I took my car, drove down the street.. and the check injection warning came back on. 
I have noticed that the engine sounds louder than before (the only way I can describe it is like a tractor) also when I put my foot on the accelerator the turbo seems to may a wooshing noise. This did not happen previously. 
The car seems to judder when idle. I don't feel like it has the power it used to.  
Any ideas? I love the car, and have spent so much on repairs over 3 years of having, such as new steering rack, new relays for back electric windows... 
  
I'm at my wit's end with it. 
  
                            
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