Jump to content
SAU Community

Need Some Help

mango

By mango,
in Engines & Forced Induction

 Share

Recommended Posts

mango Rookie

mango

Posted
Posted

grand son has a 1988 ti skyline with rb 30 motor, while the motor is idleing i kind of surges.

he has changed the leads and plugs and it still does it.

he has taken 1 lead off at a time and there is a difference in the motor as it ran rougher, except when he took off no 3 lead there was no difference.

he then took no 3 plug out and shorted it on the rocker cover and there was plenty of spark. the plug was black at the bottom, it was like it was not burning petrol, there is plenty of compression in the cylinder, because it is getting petrol i pressume that injector is ok.

he has also put fire injector cleaner in with the fuel, it has nulon motor flush in the oil, and new exhaust system on it.

the car had been sitting for about 6 months without being driven.

hope someone can head him in the right direction.

thanks,

mango.

Link to comment
https://www.sau.com.au/forums/topic/118970-need-some-help/
Share on other sites
Nosmo Enthusiast

Nosmo

Posted
Posted
grand son has a 1988 ti skyline with rb 30 motor, while the motor is idleing i kind of surges.

he has changed the leads and plugs and it still does it.

he has taken 1 lead off at a time and there is a difference in the motor as it ran rougher, except when he took off no 3 lead there was no difference.

he then took no 3 plug out and shorted it on the rocker cover and there was plenty of spark. the plug was black at the bottom, it was like it was not burning petrol, there is plenty of compression in the cylinder, because it is getting petrol i pressume that injector is ok.

he has also put fire injector cleaner in with the fuel, it has nulon motor flush in the oil, and new exhaust system on it.

the car had been sitting for about 6 months without being driven.

hope someone can head him in the right direction.

thanks,

mango.

Hey mate,

Had a very similar thing on an R31 GTS I was trying to tune...

Ended up being the distributor cap. I could not see anything wrong with it, however when I swapped it for another one the car came good, set the time and the thing goes like a dream!

However, the first thing I would do is find a nice quiet road and give it a bit of a work over. RB30's do not like sitting around much.

Other than that start looking at the all vacuum hoses, inlet tract etc.

Also try forum.r31skylineclub.com for more info.

Cheers!

Jamieson

Link to comment
https://www.sau.com.au/forums/topic/118970-need-some-help/#findComment-2205316
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

    • kike_kike
      Problem with a tachometer on a Skyline R33 with an RB25DET Neo engine

      By kike_kike · Posted

      Hello First, I apologize if this is not the correct forum. Let me know and I will move it to the correct one. I'm having a problem with the tachometer on my Skyline R33 with an RB25DET Neo engine. I'll tell you from the beginning. I'll tell you from the beginning. I have the RB25DET Neo engine installed in a Nissan Patrol GU, with a Link G4X control unit specifically for that engine,  and I have fitted a Skyline R33 tachograph to the original GU dashboard, but it doesn't work properly. I have the tachometer connected to the positive and negative terminals of the GU panel's wiring, and the signal cable is connected directly to the ECU output pin, but the rpm fluctuates widely. Can anyone tell me if the output signal from an R33 ECU is the same as the output signal from an R34 ECU, or if the voltage and signal type are different? Regards and thanks.  
    • Hexi
      Dumb rich kid tries modding for the first time

      By Hexi · Posted

      I guess it was the thought about "Oh if I were to drive this everyday". Then no, SL500 I wouldn't really consider lmao. 
    • Hexi
      Dumb rich kid tries modding for the first time

      By Hexi · Posted

      Yeah actually really fair point. Idk what I was thinking when looking at the SL500. Now that I think about it, I feel like I would have more enjoyment out of a shitbox that I would need to repair than some fancy merc. Although I must admit the SL500 does look quite nice. My bad hahaha.
    • Kinkstaah
      Dumb rich kid tries modding for the first time

      By Kinkstaah · Posted

      100% Also "Not wanting to spend money" is THE WORST IDEA IMAGINABLE when coming to a project car of any kind. They EXIST to BURN MONEY. Sure, gas money is a thing. A stock car with the worst fuel economy ever sold would probably be cheaper than modifying a car with FREE petrol for the life of your ownership of it, lol.
    • MBS206
      Dumb rich kid tries modding for the first time

      By MBS206 · Posted

      Amount of time you're being observed by law enforcement is so minute, that you could be a dumb shit 90% of your driving time, and never lose a demerit. You could also be the best driver ever and still get hit with a fine.   When you realise how quickly everything turns from "Wee, we're having fun!" To "oh f**k oh f**k oh f**k", you start to realise the only way to be a good driver, is to not be doing anything dumb or unexpected by normies on the road. You want to go fast, go to the track. Someone there in a 1990s slow POS will also show you how bad of a driver you are as they lap 10 seconds per lap quicker than you can in a car that should be considerably faster.
×
×
  • Create New...