Vasilis 1 Report post Posted November 30 Hi guys I have a problem with my engine and can’t figure it out. A couple a couple of days after our tuning session I tried starting up the car and it seemed like it was running on 3 cylinders. I unplugged the coils one by one and the number 4 coil didn’t seem to work. I swapped coils, plugs and injectors between cylinders and still when I disconnect number 4 coil doesn’t affect how the engine runs. I replaced the coils with new ones and still no effect. When I perform an ignition test I can hear the plugs clicking. My tuner suggested to perform a compression test. Pclink doesn’t show any errors. Thanks Quote Share this post Link to post Share on other sites
wastegate 1 Report post Posted December 2 Turn off fuel in the ecu for spark test Take the coil out put a spark plug in it (earthing it) and try to start, see if there is spark. If not, since you say you have replaced the coil, check wiring. If you do have spark then check injectors, make sure you can hear each one ticking. Check the plugs and wiring to the ecu. Start your troubleshooting with the basics then work up. Quote Share this post Link to post Share on other sites
Brad Burnett 78 Report post Posted December 2 I second the compression test. If you have tried swapping coils and injectors around with no success it is possible that it is a mechanical issue. Quote Share this post Link to post Share on other sites
