Check Engine code reads misfire in cylinder #7
08-20-2009, 04:17 PM
#24
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08-20-2009, 10:11 PM
#26
If you have trash in the injector, sometimes you can pull it and look in with a flashlight. If there is trash you in the screen try spraying it out with some carb cleaner. Use the straw and blast that crap out. Doesen't always work but it might be worth a try. Follow that with some seafoam or lucas fuel treatment in the tank.
08-21-2009, 06:22 PM
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so i pulled the fuel rail off today on the side with the misfire and emptied its contents into a clear container and there is definately some trash in there. there was alot of small black particles in the fuel rail im assuming this is most likely my problem. would i just need to go ahead and replace the #7 cylinder injector or should i just clean it and install again to see if code continues? also whats the best approach to cleaning these things? should i leave them on the fuel rail or remove? thanks!
08-21-2009, 06:51 PM
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I'd swap #7 with #1 to see if the DTC changes from P0307 to P0301. That will confirm that the injector is bad. Replace the "O" rings while you have it apart(2 per injector). $10 for 8 "O" rings. Put some mineral oil on the "O" rings before you pop the injectors back into the fuel rail and seat them into the manifold. Also put a little oil on the manifold and fuel rail before you install the injectors. You want these things to pop into place. Make sure they're good and slippery.
08-21-2009, 08:10 PM
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I'd swap #7 with #1 to see if the DTC changes from P0307 to P0301. That will confirm that the injector is bad. Replace the "O" rings while you have it apart(2 per injector). $10 for 8 "O" rings. Put some mineral oil on the "O" rings before you pop the injectors back into the fuel rail and seat them into the manifold. Also put a little oil on the manifold and fuel rail before you install the injectors. You want these things to pop into place. Make sure they're good and slippery.