Manual Vti stuttering jerking on acceleration.

[Mbeya]

Hi
Car is a 2006 Manual VTI with 160,000k on the clock. Recently the car exhibits the following symptoms: Jerking/hesitating under acceleration. This happens mainly when going uphill, and/or with the air con on, and/or with 4 people in the car. The car also feels underpowered with a flatspot in acceleration at the low end.

I have no engine warning lights or error codes, and idle is perfect.

Does anyone have suggestions as to how I can narrow the problem to the fuel system, or the coils or plugs, or other possible causes.

Thanks

[curtis265]

get an OBDII adaptor and see if all the readings from the sensors are normal looking

Have you examined the plugs?

Do you have a full tank of fuel?

[amant02]

This has been solved.

Igintion coils.

Wrap em electrical tape till you can replace.
Repco sells em cheap.

All credits to other kunts.

I think they are shit, cos this spark plug change the 3rd coil looked really pink. Done under 125 km.