Jump to content
SAU Community

Car Misfiring When Hitting Boost

soultz

By soultz,
in Engines & Forced Induction

 Share

Recommended Posts

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

[quote name=ClutchBurndout-:(' timestamp='1326786705' post='6192170]

coilpacks

my worry is, why wouldnt he fix it himself? some lecky tape around the coilpacks is a quick fix... why would you sell a car with issues?

Cause he didn't know what the issue was?

Not everyone knows what causes a misfire in Skylines.

rondofj Veteran

rondofj

Posted
Posted

Just a quick reference, splitfire is the only correct fitting replacement, all the others only use 1 bolt and sit slightly angled as the bolt holes are wrong.

Bulshit. I installed YJ on my RB25neo a few weeks ago- perfect fit, sits straight and uses 2 bolts per coil.

soultz Community Regular

soultz

Posted
  • Author
Posted (edited)

hey guys!

bought the car, im in LOVE. i was about to order splitfires tomorrow, but i stumbled across a brand called superspark? the boys at autobarn sell them and they recommended them as a direct replacment for the coilpacks?? 1 guys uses them in hes rb25det and he loves them, they are 495 a set...

has anyone heard of these??

Edited by soultz
lilcrash Veteran

lilcrash

Posted
Posted

Bulshit. I installed YJ on my RB25neo a few weeks ago- perfect fit, sits straight and uses 2 bolts per coil.

maybe they finally pulled their finger out and got some made properly. it was 4 years ago that i went through all this garbage with my car.

GTSBoy Grand Master

GTSBoy

Posted
Posted
<br />just bought some yellow jackets! cant wait for them to arrive!<br /><br /><br /><br />does anyone know how to change them over?? i cant seem to find where to start lol??<br />
<br /><br /><br />

Do you know how to expose the place between the cam covers where the coils live? Cross over pipe off, cover off, undo coil retaining bolts and disconnect the wiring plugs (bloody carefuly because they go brittle in the heat). It's easy. You need 8 an 10mm sockets and spanners, pliers for some of the hose clamps, etc etc. Only takes an hour or so.

Dasmbo Collaborator

Dasmbo

Posted
Posted

Been using them for about a year now perfect fit with no problems also double check your ignition timing too advanced can cause a similar problem when air is cool and dense

just bought some yellow jackets! cant wait for them to arrive!

does anyone know how to change them over?? i cant seem to find where to start lol??

dont_ask Collaborator

dont_ask

Posted
Posted

I have also been using yellow jacket coils for a year no problems at all. Just make sure you more then an hours time and also change some of the hoses on the cross pipe they are most Likely getting old as well.

Dre678 Explorer

Dre678

Posted
Posted

There's a guide here:

http://www.skylinesaustralia.com/forums/topic/42819-rb25det-changing-the-spark-plugs/

If you're changing the coilpacks, consider changing or re-gaping the spark plugs (depending on your future mods etc).

Took me more than an hour haha.. the intake pipe going into the throttle body will get in the way of one of the coils as it crosses directly over it.

You can either remove a few pipe clamps/bolts and move it out of the way or completely remove it to access the coilpack.

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted (edited)

It's not too hard to get at the coils.

Mine arrived today but I had them delivered to work...and I work from home on Wednesdays....

I got one of the guys I work with to bring them home as he only lives 10 minutes away so I get em at about 630. They should be in by 8.

Also a tip, leave the valley cover off. That way you don't have to stuff around with it every time you want to change your plugs.

Edited by Cowboy1600
Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

Yeeeeehaaaaa!

My problem is fixed and for the first time since I have owned the car (nearly 10 months) it's running flawlessly. I pump it up to 11psi and floor it and it just pulls.

Here's hoping you get the same results.

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

its akways a good ideah to mate to do your plugs to ngk BCPR6ES

also while its all out do a compression test

I put a set of Iridiums I had kicking about in at the same time.

Compression test can go root a boot. I'll do that if I ever have any concerns that it might be down. The car doesn't get driven hard enough or often enough for me to want to do a preventative comp test.

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

Just a quick reference, splitfire is the only correct fitting replacement, all the others only use 1 bolt and sit slightly angled as the bolt holes are wrong.

Just a quick reference, you're very, very wrong.

YJs went in perfectly. No angle, bolts lined up perfectly. Fitting was a breeze.

soultz Community Regular

soultz

Posted
  • Author
Posted

hey guys,

installed 5/6 coil packs tonight, i was working on installing them and the 6th one had a different bracket for the screws to go into, 5 were the same direct fit, where as the 6th one was completely different therefore i could not put it in :( so ive contacted yellow jackets and am awaiting a reply...

on the good side....MY MISSFIRING PROBLEM IS FIXED!!! i changed the 5/6 and used a old one to test the packs and no more misssfiring! so happy!

thank you to everyone who helped aswell :)

i just hope i get to fit the last one soon :(

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

    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      I seem to the be only person that is using a Haltech 2500 on an NA motor, I've installed a Bosch DBW throttle body to the OEM intake manifold and am having problems maintaining AFR even with the wideband o2.  It will run extremely rich at idle and up to redline, but under load it will go extremely lean in the 20s and i'm essentially having to rev it over 4k and feather the clutch to get it up to speed.  I've read a few other threads of about the butterfly, it seems removing the vacuum to it is supposed to have it remain open, i've noticed no difference under 4k with the vacuum line to it plugged.  I'm hoping someone here has had luck using the NA manifold with Haltech, and if they happen to have a tune for it.  
    • sonicii
      Could it really happen......

      By sonicii · Posted

      I don't know any details, but I really wouldn't be surprised if they do it as a LHD only version, at least initially.
    • Gareth87
      What should I do next to hold the head on

      By Gareth87 · Posted

      Thanks for the replies everyone. Definitely a coolant push. Oil catch can is empty and always has been. As the engine is out now I'll be having a good look over things. I do have some detonation on the piston tops from a trigger issue back about 5 years ago. I felt it and shut off then bought a new ecu and changed the trigger. Never been an issue since. It never hurt the power, its made almost 80hp more since that incident but I will pull the bearing caps to take a look. If the bearings are damaged I will do a bottom end refresh. Head is being re conditioned at the moment and the block will be cleaned and checked to ensure it's flat. I'll go with a kameari gasket and see how it ends up. The other thing I'm not super keen on is the cylinder colours. I suspect this is from the inlet manifold. The plan will be to put it back together, retune and then stick a plazmaman billet inlet on it and retune. I'm happy with the power, if it makes a little more, then great, but I would rather just make everything more efficient at this stage.
    • MBS206
      Could it really happen......

      By MBS206 · Posted

      Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • MBS206
      R34 25GT Engine Light 21

      By MBS206 · Posted

      Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
×
×
  • Create New...