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  1. Civic Si
    2009 civic si fa5, sk2 alpha header, injen intake, 307xxx kms Bought it with a "misfire" and a couple other codes. Did o2's map,maf, injectors, coils and sparks, turns out when i was installing coils i have no spark to cylinder 2, swapped multiple coils in place and no spark each time...
  2. 8thcivic.com Site News
    I've been experiencing trouble with my manual 2006 civic, check engine start blinking. At first replace the valve cover gasket since i found oil in one coil. Then i replaced all spark plugs but the problem was there yet. It shows all p0301,02,03,04 codes. Nevertheless i dissconected the coils...
  3. Mechanical Problems & Technical Chat
    how's it going everyone? I got an 2008 DX sedan 5spd with the 1.8l in there that has a mystery that can't be solved. It throws a code for all 4 cylinder misfires with the added p0300 "random misfire" code. I have done multiple things to try to resolve this that I will list down below; Removed...
  4. Mechanical Problems & Technical Chat
    Recently started getting a misfire at high rpm in my 2011 supercharged civic si. It started happening when it started to get hot out and it’s progressively getting worse the hotter it gets I tried changing spark plugs and I’m wondering if I it’s a coil pack or injector issue. It could also be a...
  5. Mechanical Problems & Technical Chat
    Title says it all. My 06 Civic DX has a idle misfire and I cannot pin it down. I've changed plugs, coils, and injectors. The only thing that I think it may be is maybe carbon buildup on the cylinder that is misfiring. Thoughts?
  6. Mechanical Problems & Technical Chat
    Hey good morning, or afternoon. So, last night driving home from work my 2007 civic SI decided to turn into a Christmas tree. The CEL and VSA light turned on, and the TC turned off. Tldr I drove home just fine car didint idle funny, it revved well, power was still their. Etc. So come morning I...
  7. Mechanical Problems & Technical Chat
    My 2006 honda civic just started misfiring on cylinder one while just sitting in a parking lot. I was wondering if there were any "usual" items that could cause this that I should check. I've done spark plugs and checked the coils.
  8. Mechanical Problems & Technical Chat
    I'm reviewing the freeze frame from my OBD2 reader and I'm curious what everyone thinks. Do these results indicate that my EGR valve is bad? or do I have something else going on, let me know what you think. Engine Load = 43.137 %Engine Coolant Temperature = 77 °FFuel Trim Bank 1 Short Term = 0...
  9. Articles - Engine, Core
    Hey I’m new here and need some help. Not sure if this is the right place to post this but I’ve been having some trouble with my 2008 si sedan. I recently got a retune and everything was going fine and about 3 weeks later I got an engine code. I pulled the code using hondata and it said all 4...
  10. Mechanical Problems & Technical Chat
    As stated, I am looking for confirmation if a lighter than stock flywheel will cause a misfire code on an 8th Gen Si I seems strange to me but it is clearly stated as such on K-SeriesParts website and they restated the same to me again on the phone today. The only fix is stated as a FlashPro to...
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