Jump to content
SAU Community

Recommended Posts

Hi all, l didn’t want to put anything on the forum, however l am unable to work this out and am extremely frustrated, hopefully someone can give me some good direction.

the car blew a cooler hose, since then it has developed a miss at approx 5,000 rpm upwards.

the strange thing is that it now fowls only plug number 6.

all others are fine.

changed coil packs around and same issue.

new coil loom, same. Car runs, idles and drives fine, as long as you don’t go past 5.000 rpm.

running apexi fc. Has had tune. Developed this after the tune. However was running amazing until the hose blew off. 
Boost is a conservative 15.

if anyone can give me some direction it would be greatly appreciated.

regards.

 

 

 

Link to comment
https://www.sau.com.au/forums/topic/483695-r33-s15-missing-at-5000rpm-onwards/
Share on other sites

Sounds like it had a boost leak ( the cooler hose about to pop off) and was tuned to suit that. Now boost leaknis gone tune is wrong.

 

Did you pressure test the cooler pipes before the tune?

 

Yes, plugs changed, several sets now.

has had new cooler piping both sides.

turbo  side to air filter done pre tune. Intake done only a week ago. Still same problem.

 

Car ran perfect after tube, 232rwkw. @ 15psi.

drove it 250kms after tune, no issue. Gave it a few short drives and it, again, was perfect.

blew the intake pipe to plenum off. 

once this happened it ran like shit.

changed plugs as they were all Fouled. 
since then it has had the issue.

Appreciate everyone’s input.

 


 

I have seen a car foul plugs mysteriously more than others, and it turned out to be the diaphragm in the FPR that had failed, sending fuel into the plenum into two cylinders specifically.

Something mechanical has let go in the cylinder that is fouling. It would be very suprising to somehow make a tune that only fouls 1 cylinder unless you are playing with cylinder trims, which I don't think is very common on a powerFC.

You need more data available to you. Is the problem spark related? Fuel related? You may need a dyno to figure this out.

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

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...