Taiwwa Posted April 30, 2019 Report Share Posted April 30, 2019 Cylinder 1 misfire in my car. I've already replaced spark plugs and coil. That leaves the fuel injector. How difficult is this operation? I may give it a go before relenting and taking it to a mechanic. Quote Link to comment Share on other sites More sharing options...
BluenoseCmax Posted September 15, 2019 Report Share Posted September 15, 2019 I also had a misfire #2 for a few days, which then morphed to a #2 injector open circuit message on the OBD. I also changed the plug and coil first ($70C) on #2 with no joy. This was before the open circuit message that came after the running test of the coil. The injector ($50C) was not as difficult as I thought it would be. After removing all the "stuff" removed for the coil access the injector rail is just forward. removing all of the plugs for the coils and injectors as well as the two bolts on the rail and access was available. The rail on this 6year old Cmax (163000KM) was pretty stuck in place so careful prying and pulling was needed. The injectors themselves are only held in by their o-rings (2 per injector). Make sure you order 2 o-ring kits as there are 8 in total and each kit only had 4ea. If you only remove one injector then you will need two for that one and then 1ea for the bottom of the other 3 injectors. Fuel will trickle out when its removed so rags handy. Also I believe I saw where the battery is recommended to be disconnected, likely to prevent the fuel pump from blasting out under pressure if someone inadvertently hit the start button. One other note is that there are misconceptions around the cylinder numbering from the front (normal) or the transmission. When I asked the Ford dealer actually mentioned that #2 was from the transmission. NOT! at least for OBD messages. I replaced their recommendation only to have to do the real #2 from the front of the engine. Quote Link to comment Share on other sites More sharing options...
Arpit Posted January 9, 2021 Report Share Posted January 9, 2021 I also had code for the #2 injector. And I am planning to do by myself, i also bought parts form the dealership and it comes with one O ring. My question is that it is necessary to replace the 4 O ring for the seats at the bottom of the injectors Quote Link to comment Share on other sites More sharing options...
SillyGoose64 Posted August 22, 2023 Report Share Posted August 22, 2023 What were you guys doing about coding the ECU after fuel injector replacements? I have a 2013 and am wondering if/when its necessary. Planning to replace #1 injector, had #3 replaced 3-4 years ago by FORD and don't want to fork another $800+ over right now if I can get this done myself. Quote Link to comment Share on other sites More sharing options...
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