Swift hesitates / jerks while accelerating

[shanii89]

Aoa everyone

From last 2 weeks i noticed that my swift 2011, jerks/ hesitates or lags whenever i change the gear (up and down) and accelerate. It jerks 2 3 times and then runs smoothly.
Idle rpm are fine , no missing.
So i got my throtle body services and also cleaned the plugs and also got the rubber tubes (2 were damaged)
That are in front of coils.
Now my mechanics says it could be weakened coils.
My question is
Can coil get weak like this ? If yes then how can we check which are faulty ?
Or should i check any other thing?
Thanks to all

[saimxiddiqui99]

Assalam o alikum.

The jerk in your Suzuki swift is because of the plug coils. The way to check the coil is

the insulator becomes yellow..

The another way to check the coil is to just remove the coils with the help of pliers and see if the car jerks. If the car jerks when you pull out the coil a little it means the coil is working fine but if its faulty it'll jerk less and catch the current from the sides.

I just got it recently changed my one plug coil was week and this is the same one. Rest of the other has white insulator and is working fine.