Hello Everyone,
I just did a service on my Mazda Demio, a month later it is acting up, very slow on pick ups, and after crossing a speed hump, it has something like cutting when going uphill, I am suspecting spark plugs, but is there anyone who might help on what to attend first?

Again when moving on gravel road, or on a road with potholes it makes a disturbing noise coming from the front wheels?

Please help anyone

Kind Regards
Mack