Hey all
I can't take it anymore with the issue and its time for DIY and learn and save $$$. I drive a r34 4door rb25de neo manual
Firstly i would like to say last year before the end of November i bought new spark plugs and had them replaced because the rocket cover gasket needed to be replace so might as well change of the spark plugs as well. With this change the car has been running perfectly without a beat until last week.
I have been noticing the car was causing some issues after roughly 10-15minutes of driving from cold start, it was coughing and losing power, it took a bit to notice but then become a lot more noticeable during cold starts and honestly felt like it was misfiring. After some time driving and the tempt reaches normal the engine runs smoothly and no misfire at all.
So here it is, I would like to know how can i go on and diagnose the problem and try and fix it, without having the diagnostic tools and electronics.
From reading through different posts, the most common places to check are the spark plugs and the coil packs, that is all i know.
I do not own a lot of tools as well if it comes down to having something really specific to fix it. (I do have a torque wrench lol)