UK Car Repair Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.My info is somewhat limited on your model here but I had seen no one else has responded and would like to see if I can help here.If at any time you feel that I cannot help with this please let me know.
If the injectors have been tested and found to be o.k. I dont think this is the cause here.Usually if they were at fault if they were tested properly this would point out the fault for them.
I have seen issues with a failed fuel pressure regulator on some models that have this regulator as well as fuel rail pressure sensor that can cause hard starting and smoke issues.If these have not been checked/tested at all this should be done to see if either of these are the cause here needing replaced.If the place you had the injectors tested is a reputable facility most likely the injectors are all o.k. but I have come across some facilities that test them and say their o.k. and find out later that one or more was at fault needing replaced.
If you are using any engine oil at all with this issue this may be a fault with piston rings leaking allowing oil into the cylinders causing the smoke here and hard starting.This would have to be checked into further to be sure and to locate and repair the fault.
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