Jump to content
SAU Community

Missfiring

lukeskidz
 Share

Recommended Posts

lukeskidz Apprentice

lukeskidz

Posted
Posted

Hey guys, so i was at drift prac yesterday and my car started to missfire.

It was fine for the first 2 laps, boosted hard and ran awesome. off the limiter fine. then my car died in the ass. felt like a boost leak, reved to 4-5k rpm and just spluttered burbled and died, wouldnt build more boost. went back into the pits - no boost leak at all.

So went back out and it was fine again for the first 2 laps / same story. so then i started thinking something to do with heat soak.

back to the pits, took coil packs and plugs out, the plugs had fair amount of calcium (i think) build up on them. and when the 5th coil pack came out the spring fell out of it -___-. but even if this was the problem wouldn't the car still run on 5 cylinders? - hadent changed the plugs my self yet - only had the car 2 weeks

hmm so thats pretty much what happened. havent had a chance to put new coilpacks in, or plugs as yet. but not that keen on forking out 550 dollars for split fires if its not the problem..

Cheers, Luke

Link to comment
https://www.sau.com.au/forums/topic/363501-missfiring/
Share on other sites
lukeskidz Apprentice

lukeskidz

Posted
  • Author
Posted

/ IT STILL MISSFIRES...Back to the drawing board... Replaced all the plugs and put in an AU falcon coil pack set up - all brand new so ive pretty much eliminated ignition as a source for the problem.

So.

-runs fine when its cold. when it reaches optimum operation temperature, i can drive it as hard as i want to for about 5 minutes / dies in the ass

-Ignition has pretty much been ruled out.

-no boost or vaccum leaks.

-not a fuel problem as it only happens when the car is hot.

so.

Tonight im going to Replace the AFM.

After that i might look at the sensors / oxygen sensor? or water temp sensor not letting the ecu change maps (is this even possible, dont know much about rb20's)

Link to comment
https://www.sau.com.au/forums/topic/363501-missfiring/#findComment-5803670
Share on other sites
lukeskidz Apprentice

lukeskidz

Posted
  • Author
Posted

Has the fuel pump been replaced?

How did u fit the au coils? What ecu are u running?

Do u have any pics of the spark plug tips? U said that had calcium.

The au coilpacks are easy as to fit, just suss the write up on 31 club, you need to cut your coilpack loom up and merge it with the falcon plug, cost me about 200 for the set up + new plugs - all brand new!

And the problem was the ignitor pack.

Link to comment
https://www.sau.com.au/forums/topic/363501-missfiring/#findComment-5805605
Share on other sites

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

    • The Bogan
      MLR's Bogan cruise ship

      By The Bogan · Posted

      No......not yet Minister for War and Finances has stated that the Commodore has to go first Not that I am going to modify the NC any more than what it is already modified now.....
    • drifter17a
      Alpha omega racing bracket

      By drifter17a · Posted

      Thanks again, really helpful chap from alpha omega wanted to speak to me, little concerned if this is meant to he aero alloy/ airospace quality and car sitting on drive has caused this.  Airplane are subject to much more changing temp and conditions than road salts! My caliper, many other components much older have surface rust but never eating part of the metal   Had I not seen it , could have been a disaster! specifically on rear part of bracket coming off like biscuit will update on what they say, helpful people so far
    • MBS206
      MLR's Bogan cruise ship

      By MBS206 · Posted

      January or Feb is it booked in for turbo fitment?
    • The Bogan
      MLR's Bogan cruise ship

      By The Bogan · Posted

      The MX5 has had some annoying rattles in both front doors over bumps So I installed fancy pants door bushings, which stopped all of the rattles with the windows up, but........with the windows down there was still rattles, so after some googling,  and a chat with MX5 Mania, I got some new door to glass weather seals, all the rattles, windows up, or down, are gone now Shout out to MX5 Mania, the weather seals were on sale, and when I head to Dural to pick the up they even fitted them for me for free I did see a "really" nice Blue NA sitting out front   and this Black NC PRHT that looked like it has sat in the sun for its whole life and never had a wash, the clear coat was non-existent, an it looked horrible, really horrible, but, it had a nice turbo kit with over 200kw, the thing went like a cut snake, bagging the rears through the gears and dosing like a champ 😍 But, as I've always stated, I am keeping my NC na, I'm happy with the current power the car makes In other news: MX5 Mania do a drive in drive out turbo kit, the only minor additional part recommended for boosting my car, as it sits now, is a oil cooler, and that bonnet vents are definitely required for track use Aftermarket version look a bit to "racecar" spec I wonder how Focus RS bonnet vents would look?????
    • GTSBoy
      Alpha omega racing bracket

      By GTSBoy · Posted

      Paint is only structural when applied to the outside of Chinese and Indian cars. Otherwise it should never be present between mechanical joints that were intended to be metal to metal. Pain slips, slides, cracks, compresses, and add thickness that wasn't intended to be there. It comes firmly under the category of "just no".
×
×
  • Create New...