cornish6544 Posted May 14, 2017 Share Posted May 14, 2017 I have 440 yellows on my classic wrx but when i bought them they were second hand. Recently the car has had a rough idle when warm and sometimes struggles to start and needs encouragement from the accelerator. Seems maybe a tad down on acceleration also. These all point to my injectors needing professionally cleaned am i right? Quote Link to comment Share on other sites More sharing options...
cornish6544 Posted May 14, 2017 Author Share Posted May 14, 2017 Also does carbon cleaning clean out the injectors? Quote Link to comment Share on other sites More sharing options...
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