Jump to content
SAU Community

Misfiring RB25DE sounds like WRX

DarKZer0

By DarKZer0,
in General Maintenance

 Share

Recommended Posts

DarKZer0 Community Regular

DarKZer0

Posted
Posted

Hey people

I've been having a problem with my R32 RB25DE for a while now thinking it was just spark plugs that need replacing. I replaced them yesterday however it did not solve the problem. What happens is that the car is misfiring virtually all the time and sounds like a WRX (nice sound but car goes like shit). We are sure one of the cylinders is not going. Could this be due to a faulty coil pack?. I've searched for answers on forum already and most lead to faulty coil pack however I would just like it confirmed. Also posted by revhead, I should spray the faulty coil with silicone spray and 9/10 it solves the problem, is this true?

Can anyone confirm this and provide any extra help if possible? Greatly appreciated!

Thanks in advance guys

Link to comment
https://www.sau.com.au/forums/topic/43237-misfiring-rb25de-sounds-like-wrx/
Share on other sites
blind_elk Grand Master

blind_elk

Posted
Posted

If it is misbehaving at idle, it is a simple procedure to identify the offending coil.

While the engine is idling, simply disconnect each coil plug one at a time. If the note of the engine does not change, then that coil or plug or cylinder is at fault.

Move the coil to another cylinder, and repeat the test. If the same coil shows no difference, then it is the coil at fault. If it is the same cylinder, then it is a spark plug, or worse the cylinder (pooped piston).

If you identify a cylinder as the culprit, you can repeat the test after moving the spark plug to another cylinder.

If you identify the coil as the culprit, it is possible to simply clean the dirt and grime off the rubber boot, maybe give it a spray with silicone, and the problem might go away. Often dirty rubber boots provide an easier path to earth than does a spark plug.

DarKZer0 Community Regular

DarKZer0

Posted
  • Author
Posted

hey guys thanks for the help however I opened them up today and have disconnected and cleaned every single one, as well as sprayed the outer edges and insides with silicone spray. Still same problem. Maybe I need to spray some other part?! I did notice that one coil pack had a split right at the bottom (the outer hole cover). I am awaiting night-time so I can test them all one by one. I did test the one with the split and it seems to fire out sparks near the middle where the rubber meets the plastic housing thing. Then I sprayed it more between the middle plastic and the rubber where the gap is and it went away wht no more large sparks. Do you guys know where I can get them tested proffessionally if necessary?

Thanks for your time guys

DarKZer0 Community Regular

DarKZer0

Posted
  • Author
Posted

no I dont think so... If it was, wat could be the problem then?

there is no water spiting out the exhaust either unless idling and reving for a long time so its not the head gasket. Getting a compression test 2moro to check exactly which cylinder/coild could be at fault.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      KW only offers a set for the R32 GTR. Popular options are D2 racing, Ksport or Öhlins. I have a D2 Racing coilover set, though I don't know for sure which one.
    • GTSBoy
      Unpeeling the Orange

      By GTSBoy · Posted

      Well, the good news is you have more than one very good option for new coilovers in and around your country. Worth the drive over to KW to talk about GTR stuff.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Fair enough, I am in no way a tire expert so I'm not familiar with all the terms and conditions. I'll definitely note down the AD09 to potentially try in the future. Rain is not too big of a concern for now as I will probably only drive in the rain when I have to. And considering I still lack experience driving the GTR I'd more than likely take it easy too. I have coilovers in the car but as I barely got to drive so far I never bothered to even check if they are adjustable haha. The suspension is almost entirely old and worn as well so I suppose when I eventually fix that in the future that would make a huge difference.
    • PranK
      My BMW 335i

      By PranK · Posted

      There's not a great deal to report here .... except ...... FOR .... LSD!!!  I bought a Quaife LSD from the UK and shipped it here .... Wish I'd just bought locally cause the shipping and duty was $700! But there were so many diffs used in the E90s I just wanted to be absolutely certain I was getting the right one so I spoke with a supplier in the UK who builds race cars and they have heaps of experience with the E90s.  I pulled the diff out which was seriously awesome - I've never done anything like that before, I must have watched 1000 videos on YT about it as well as consulting the Bentley manual. It was super easy in the end. The diff was delivered to the awesome folks at Hornsby Diffs and will be back in a few weeks. I also replaced the diff bushings with some Nolathane ones.  Really looking forward to getting it back and getting back to the track or even the skidpan.
    • Dose Pipe Sutututu
      Unpeeling the Orange

      By Dose Pipe Sutututu · Posted

      yeah... the 13kg/mm springs weren't always in there, I had 10kg/mm but doing a few SMSP commanded heavier front springs. It's so good now going into T1 and T2, just need more seat time and real tyres.
×
×
  • Create New...