this car run's really lumppy when cold and has a severe flat spot i think it just has poor quility engine oil to thick so it has sticky valves got to service the car any way but going to use thinner oil anyway 5w/30w

 

itll have a coolant temperature sender which detects the temp... ECU interprets this and adds more/less fuel dependant on the signal...

its old shitty management systemns like KEjet that have cold start valves