Jump to content
SAU Community

Recommended Posts

Hi all,

Just imported a r34 gtt , its stock standard...done around 90,000.... just recently if i've got my foot planted it missfires pretty bad through 4.5-5.5k revs, and stops after that.... it doesnt do it if i accelerate more gently through those revs

Anyone have anyidea whats causing this?

Cheers

Link to comment
https://www.sau.com.au/forums/topic/324651-missfire-45k-55k-revs/
Share on other sites

Splitfires are a bit of a rip off now, around $600+ new from memory. Might be better off trying to source some barely used second hand ones from this forum, or alternatively go with a different brand.

Edited by Dani Boi

i had a very similar problem once, and despite everyone telling me it would be coilpacks, it turned out to be a bad connection to the CAS..

my suggestion is not to go out buying a bunch of gear you may not need.. take it to one of the garages from the consolidated workshop thread and they should be able to tell you the cause pretty quickly and it will save you money in the long run.

before you buy new coilpacks if u wanna save some money (this isnt a permanent fix) change your spark plugs and gap them to about 0.75mm - dont go less then 0.7 and dont go more then 0.8. sometimes this will stop the missing

600$ !! thats lame. let alone if i get somewhere like x-speed to do it, probably cost me around a grand =/

:P WOW! You got a Skyline and don't even want to pay $600 to repair it? Skylines are money pits, get used to it. Wait til your clutch goes...and even better wait til the turbo dies on its hole.

Bit of advice, if you don't want to pay workshop markup on parts, source out the parts yourself and just pay the workshop for the labour. Will save you quite a bit in the long run.

I'd be pulling out my plugs and checking the condition/replacing them. is the engine running higher than standard boost? if not re-gapping shouldnt be required. if that fails being the next cheapest option i'd do a upper cylinder purge (u.c.p.) personally i use a product called "injector max" to ensure the injectors are clear and fueling properly and the back of the valves/piston heads are clean, just did one today on my R33 and can really feel the diffrence it made! If that doesnt fix it i'd be focused on the coilpacks. (might be a good idea to buy just one known working second hand standard coil then swap it with the rest one at a time to see if this eliminated the problem as it could just be one dodgey coil pack behind the whole miss) it takes a little bit of time but its better than $600 for a set of splitfires ya know :D

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


  • Similar Content

  • Latest Posts

    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
    • Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
×
×
  • Create New...