Jump to content
SAU Community

Recommended Posts

Hi,

I've got a SII skyline with just an exhaust (full). With this exhaust it was running 9psi (without upping the boost). I then put in a bleeder valve ,(GFB brand) and ran it at 10psi. It was running perfect on all gears without any "cutting out". Then the next day it started cutting out very often. I have since removed the bleeder value and the engine is only running a measly 7psi (with the exhaust) but still cuts out... Does anyone have any ideas what is wrong and maybe what i can do to fix it? any help would be much appreciate it.

thanks,

Steve

also u may wanna get ur actuator (wastegate) leak tested ... coz if that is leaking it will boost normally at a certain rpm then will suddenly cut or jerk ar higher rpm ... (cut out)

juzz get the tube from the actuator going to the IC piping and let it blow into the tube with a air compressor and listen for air leak .. if its tight (the air blowing) that means your actuator is still good ...then back to the square boards..

hope dat helps..

  • 3 weeks later...

Hi,

I have tried what you guys have said but still no luck.... It's taken me so long to repsond as I was trying to put a cooler in.

I forgot to mention that the jerking happens from about 3000rpm to 7000rpm (roughly when the turbo start to spool) in all gears.

Any more help or opinions are much appreciated. Thank you.

Steve

you Ecu Computer has blown get it fixed or buy a new one =]  

i had that problem before !

Let’s all just jump to the worst scenario and start throwing money away.

Check all vacuum lines to and from the turbo, plenum, etc. What year is your car? This can also be caused by coils, or the igniter pack. B4 buying big dollar items I would personally go to a good import mechanic and give them a go at finding the problem.

Hi,

I've read the post about the misfiring.... I'd say my car is in the same scenario.. I havent yet looked at the coils but will be doing so.

I'm reluctant to say its the ECU because the boost was only changed to 1 psi more than what the mods had given it (ie exhaust gave it 2 psi more to make it run total of 9psi and then i winded it up 1psi to make it 10psi) and that when the problem started happening. Thanks for you input.

I'd like to take it to a good mechanic but there arent a great deal of mechanics in the area i live in that would have probably worked on imports....

Lastly, my car is a SII R33 Skyline GTST.

Once again thanks again.

Steve

i also had this happen the way you are describing once, and turned out to be oxidation on the coil packs. When I pulled them out, one of them was green where the coil pack makes contact with the spark plug. Cleaned them all with WD40 and car has never run smoother. Many people I've spoken to overlook this point.

Cracked coils usually dont make a big difference on standard boost, but if you are getting it as low as 3000 rpm, I definately suggest looking for any oxidation.

  • 1 month later...

I'm getting a miss right when it comes on boost about 3000rpm, actually More like just a hesitation and have also felt a cut at about 3000rpm in 4th. Put new plugs in at 0.8 gap - no change

Anyway. I am running the car without the sparkplug cover on, I can see arcing on 5 if not 6 of the coils. So I'm hoping this is the problem. You can only see it if it is VERY dark and helps if the car is warm...

I thought it was only No.1 coil but after a closer look - ALL of them

I was thinking it was an ECU cut out. But I don't think so anymore. I'll let you know once I get new coils or fix these ones.

  • 1 month later...

Hi,

I found that by taping the coils, my hesistation, backfiring goes away so I know i've got cracked coils however, if in 4th or 5th gear I and decide to overtake, sometimes it will just cut right off and then go again so i dun know whats going on there.

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

    • Yeah, thumbsup from me. The distant shot of the bay just looks same-same as before.
    • Dad had a court case drag out with them from 1998 to 2004. He was in a not at fault accident, NRMA were the ones who covered the other person. They tried to blame his neck injuries on the fact he'd had an injury in 1981 on his extreme lower back where he slipped a single disc right near the bottom. Had been all cleared from that injury for years. This accident destroyed his shoulder, and f**ked a heap of discs in his neck, and he still has major problems with it to this day. Sarah's sister while on her L plates had a small Suzuki Alto, she had stopped to give way to an ambulance, and someone changed lanes behind her because there lane was also slowing, and rear ended her at 80km/h. (She had been stopped for a few seconds already too!). Car was completely f**kED. NRMA sent the vehicle around to 3 different workshops as they kept claiming "We believe it can be repaired, and not written off, we just need to find the correct workshop". It took 3 months, and a lot of arguing before they'd concede and wrote it and paid out. About two years later her sister had a Lancer, someone pulled out of a stop sign without stopping (in an 80 zone). Her sister swerved, hit the front of the other persons car (Instead of dead t-boning the drivers door), which ramped her Lancer, and made it roll multiple times down the road. It hit every panel on the way through. Her sister had slid her self out of the car, and remembers the ambos walking to the accident (They'd been sitting at a set of lights just down the road and witnessed it) and they were saying "Well, this ones going to be a fatality, no way you can walk away from that". Well, she did. And then NRMA sent two assessors out to look at the car, both of which wrote it off. They tried to send another assessor out, except a HUGE uproar was raised, and they FINALLY paid it out. That was on a car, that had damage to EVERY panel, you could see from 100m away the whole car was also twisted, roof bowed etc. Nah, we'll try get out of needing to payout on a $10,000 car... Her sister ended up with major shoulder reconstructive surgery being required, and was permanently limited in her ability to do her job as a nurse after that, as she can't (And was told before surgery too this would be guaranteed to happen) regain full strength in that shoulder. However, there was no choice to not have it, as she could barely use her arm, which was her dominant one, and was in near constant major pain. (And she's the type of person that would try and walk off a broken leg!) NRMA did the biggest run around on the personal injury side too for about 18 months, even to the point of trying to put 100% blame of the accident on Sarah's sister, even though the other driver admitted she didn't look, and didn't stop, and was charged by the police. Sarah used to have a Barina insured with them. It was a policy setup, paid all 12 months in advance. At the end of the 12 months, Sarah was living with me, I reviewed the renewal, it clearly stated "If you do nothing, your policy will cease on XYZ date". We did nothing, as we moved her insurance in with all of mine and I was with Shannons. We find out 10 months later, NRMA decided, because he DAD had a car insurance policy at the same address as what Sarah's mailing address was (Garaged address had been changed), that they'd put Sarah's (What should have been non existent policy) onto her Dad's month to month charges on his credit card. We had to jump through hoops, to get a refund. They didn't care that we actually found the letter that said "If you do nothing, your policy will cease" they made us prove we had NON COMPULSORY insurance else where before they'd issue the refund, and after they agreed to the refund, it still took another 6 weeks and 3 more phone calls for them to actually process it. They also had two insurance claims from storm damage, and they were an absolute cluster to get resolved as well (one vehicle, one house). Some how, up until about 3 years ago, her parents were still loyal to NRMA too, and we were like "How the hell are you so loyal to staying with them, when other places are so much cheaper, and they've f**ked you over every time you've ever had to make a claim?"
    • I got the four AN10 fitting welded up to the cam covers and started up making the head to sump breather/drain lines. The front passenger side cover I used a 45 up top and a 90 at the bottom into the stock VCT head drain spot (3/4" BPST to AN10 adapter) thats unused on the RB25DET NEO with some speedflow flame shield to protect it from the manifolds heat.   back passenger side was a 90 up top with some flame shield and 45 at the sump end. The rear drivers is 45 at both ends   the front drivers fitting is capped off for now but ready to go if i want to try moving the breathers around. I was told by the fabricator to leave all the welds raw for now to make sure there are no pin hole leaks. A lot of cleaning up, re bundling looms and degreasing to go as well as final assembly on the cam cover baffles. The first real test will be 28th March at a Circuit event. added complexity and more spots for leaks but overall looks relatively neat imo
    • Yeah i think the dash needs to come out. To get the loom or maybe just climate control and radio cluster. My mirrors are done i think the motors don’t work so well after flood haha i need the ac fan, you said you wanted to keep it for your 31 and interior loom not including boot. The wiper motor. I’m not sure how good the window surrounds are on the exterior on the pintara.  I will message you to get your bank details shortly 
    • Just another barrier put up to stop cars being modified. When we're all driving Chinese sewing machines, you won't want to modify it anyway, and you'll likely already have slashed your wrists and be locked up in a padded room for your own protection.
×
×
  • Create New...