UK Car Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** you for the question. Can you tell me if the check engine light is coming on when this issue occurs? How many miles are on the car?
And is it doing this pretty much every time you drive it?
Thank you. One last question so that I can see where we can go with this. Does you scan tool read live engine data?
If you still have the original spark plugs then it can be those. Also, if the timing belt has not been replaced then that is a common cause of this when it gets stretched out.
I typically do not recommend just replacing coils as that gets expensive. I would replace the plugs and fuel filter first and see what that does.
Let me know what happens.
Did you replace the coils also or just the plugs? I only ask because this oil can short out the coils.
The reason I ask is because the oil that was in the spark plug tubes will cause the coils to work harder and can cause these issues. I hate to just replace coils though. Were the rubber boots on the coils soft?
If anything at least spraying the boots out with elecectrical cleaner.
How is the car idling at this time?
During the work you have performed on the vehicle have you ever removed and checked the PCV valve?