Taylormclean Posted December 27, 2014 Share Posted December 27, 2014 So I have had a misfire on #4 cylinder for a while and sometimes on #2 cylinder. I've done the intake o rings no real difference. I did a compression test and was at 135 on all cylinders and I only lose a quart of oil every like 3/4 of a quart of oil every 3000 miles. I've changed the spark plugs with ngk platinums and swapped coil packs and the misfire stayed on #4. Checked for vacuum leaks and found none. The only thing left was the injectors. I unplugged the #4 injector and nothing happened, I then unplugged #2s injector and it definitely effected it. So my question is should I replace the injector or should I do on the car cleaning? Link to comment Share on other sites More sharing options...
Drift Motion Posted December 27, 2014 Share Posted December 27, 2014 swap the injector and see if problem follows it... Link to comment Share on other sites More sharing options...
MrTris Posted December 27, 2014 Share Posted December 27, 2014 swap the injector and see if problem follows it... This. Link to comment Share on other sites More sharing options...
Taylormclean Posted December 27, 2014 Author Share Posted December 27, 2014 Rog. I'll do that tomorrow Link to comment Share on other sites More sharing options...
Taylormclean Posted December 30, 2014 Author Share Posted December 30, 2014 Swapped 1 and 4s injectors and still no difference. I still unplug #4 injector plug and car runs no different. The only time I can feel a misfire really is when its idling at a stop light or at 5th gear going 60 and want to speed up and its hesitant. Link to comment Share on other sites More sharing options...
Redryan98 Posted December 30, 2014 Share Posted December 30, 2014 you've ruled out spark plug, coil, or injector... than its time for a compression and leak down test. Link to comment Share on other sites More sharing options...
Taylormclean Posted December 30, 2014 Author Share Posted December 30, 2014 I did a compression check a couple months ago and it was 135 across the cylinders. Which isn't high but it's even. Link to comment Share on other sites More sharing options...
Taylormclean Posted January 8, 2015 Author Share Posted January 8, 2015 Ended up doing another compression test. Ends up #4 has 45. I am kind of at a loss right now. I leave for Germany in March so the car will be parked at my dads for 4 years. I can't really afford to pay for any repairs because I PCS soon and all my money goes to my savings account. Link to comment Share on other sites More sharing options...
MrTris Posted January 8, 2015 Share Posted January 8, 2015 Ended up doing another compression test. Ends up #4 has 45. I am kind of at a loss right now. I leave for Germany in March so the car will be parked at my dads for 4 years. I can't really afford to pay for any repairs because I PCS soon and all my money goes to my savings account. Not sure what that means, but I'm guessing that you need a new shortblock. Either sell it at a loss, or park for awhile and figure out what you wanna do with it.. Link to comment Share on other sites More sharing options...
MBrennan Posted January 8, 2015 Share Posted January 8, 2015 Same scenario here. Found burnt exhaust valves on the #4 cylinder. Having a valve job done now. Link to comment Share on other sites More sharing options...
Taylormclean Posted January 9, 2015 Author Share Posted January 9, 2015 I came up with a game plan. After reading build threads and getting pumped, I am going to keep the car run it until I PCS to Germany. Use my college tuition the air force gives to take classes on automotive repair. Come back and just start scratch with a freshly built engine. I feel fully confident of mechanic abilities. I am aircraft mechanic for the air force and I have worked on all my car since I was 16. I just need knowledge haha. Link to comment Share on other sites More sharing options...
Rhitter Posted January 9, 2015 Share Posted January 9, 2015 I came up with a game plan. After reading build threads and getting pumped, I am going to keep the car run it until I PCS to Germany. Use my college tuition the air force gives to take classes on automotive repair. Come back and just start scratch with a freshly built engine. I feel fully confident of mechanic abilities. I am aircraft mechanic for the air force and I have worked on all my car since I was 16. I just need knowledge haha. Honestly unless you are taking Subaru specific classes the knowledge you need is on this forum. Not in general courses on automotive repair. You probably know the basics well enough from being an aircraft mechanic - just don't assume this is how we do it on an airplane so this is probably how we do it on a car. Hammerdown and Tris's build threads are very good at outlining what needs to be done. Grab the service manual and post here when you run into problems. My OBXT build Link to comment Share on other sites More sharing options...
Taylormclean Posted January 9, 2015 Author Share Posted January 9, 2015 Aircraft engines have similar properties as a regular engine but completely different layout. But thanks. Tris's build is the one I have been overlooking the most Link to comment Share on other sites More sharing options...
MrTris Posted January 9, 2015 Share Posted January 9, 2015 Aircraft engines have similar properties as a regular engine but completely different layout. But thanks. Tris's build is the one I have been overlooking the most It's real easy. If you can snag a copy of the FSM, and bounce back and forth between that and here, there's no reason why you wouldn't be able to figure it out, especially if you wrench for a living. Link to comment Share on other sites More sharing options...
Taylormclean Posted January 9, 2015 Author Share Posted January 9, 2015 You da best guys. Link to comment Share on other sites More sharing options...
Taylormclean Posted January 9, 2015 Author Share Posted January 9, 2015 Quick question about doing the full legacy suspension swap on an outback, can I use NA legacy bits? Link to comment Share on other sites More sharing options...
MrTris Posted January 9, 2015 Share Posted January 9, 2015 Quick question about doing the full legacy suspension swap on an outback, can I use NA legacy bits? Depends on what it is, but, it probably won't be the same as the LGT. Link to comment Share on other sites More sharing options...
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