Hello again - thank you for your reply.. thats fine.. and the info too which is very helpful..
There are a couple of different things that can be causing what you have here..
Given all that you have described, the air flow meter comes to mind straight away..as a common cause of such problems...
Yes, you could
have injector trouble - but its just as likely to be the MAF ( air meter )
You can try disconnecting that and see if that improves / cures it - take the electric connector off - the engine may run badly on idle etc - but if things are better power wise, its a good indication of the Maf being faulty. ( This is the unit in the large air tubing from the air filter )
If its not that - then I have to recommend have a plug in diagnostic test done. This will check for fault codes if it has any -and if not - it can check the live readings as the car is driven - hence any faults will become apparent "on screen".
MOst small garages have the equipment to do these tests for you so you dont need to use a dealer.. Certainly as there are several other things it could be - if its not the Maf.., it makes sense to do that because that will find the fault rather than replacing items which gets very expensive and is a waste of time and money.
So try that with the Maf first..If that cures it - great. If not - have the diagnostics done.. that is the best , quickest and most cost effective way forward on this one for you ..
I'm very pleased to have helped you - but do ask me if you need anything more..
Kind Rgds, MIKE
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