Loose power when A/C switch on

Asked by Apr 16, 2017 at 08:11 AM about the 2008 Chevrolet Spark LS

Question type: Maintenance & Repair

I have spark 0.8 manual 2010 .
I have changed idle sensor
Fuel pump
Spark plug
Plug cable
Fuel filters
Injectors
But still engine not runing smmothly
And there is no spark on 2nd number ignition coil.
When start engine .the engine start with half round
of starter,but when I switch on ac engine knocking
and reduce the speed and power

1 Answer

76,335

#2 cylinder needs to get fixed. Check the cylinder compression to be sure there is not a internal problem, and have the coil checked at an auto parts store. Also check the wiring to the coil to make sure it is getting power.

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