SolomonShawn Posted April 13, 2020 Share Posted April 13, 2020 (edited) This is in my 2002 Legacy four-banger. The short of it is that I've changed the plugs (new NKG, gapped at 0.044), new plug wires (NKG again), and swapped in a coil from a car that didn't have this particular error, and still I have a consistent po303 and po304. omegle discord xender When this started, I had misfires on all four cylinders. I checked the plugs, and they looked awful, so I put in new plugs. All was well for a day or so, then the problem came back. I swapped in a coil from a 2001 Impreza which was a good runner until its head gasket went. All was well for a day or so, then the problem came back. Then the new wires arrived from Rock Auto, so I put them in. All was well for a day or so, then the problem came back, but now it's only cylinders three and four that are misfiring. I'm starting to think I have some non-ignition problem which might be intermittent. What should I try next? Edited April 15, 2020 by SolomonShawn Link to comment Share on other sites More sharing options...
ocei77 Posted April 13, 2020 Share Posted April 13, 2020 Check your timing. O. 1 Link to comment Share on other sites More sharing options...
bodhicheetah Posted April 14, 2020 Share Posted April 14, 2020 If you haven't already, I'd read this: https://forums.nasioc.com/forums/showthread.php?t=2318069 Fuel injector replacement isn't that difficult or expensive, might be worth a try. I bought a set of reman OEM injectors for my wrx from KM Racing on ebay. They seem legit. I think these are the right ones for your car, but you should confirm that: https://www.ebay.com/itm/4x-OEM-2000-2006-Subaru-2-5L-NA-Fuel-Injectors-Flow-Tested-Cleaned/153500205940?hash=item23bd534374:g:HJIAAOSwLnBX7tXg#viTabs_0 Good luck!!! Link to comment Share on other sites More sharing options...
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