Jump to content
SAU Community

Car Won't Start (R32 Gtr)

cadelac

By cadelac,
in Engines & Forced Induction

 Share

Recommended Posts

cadelac Newbie

cadelac

Posted
Posted

Hi all,

A "car won't start" thread. Hopefully you all can point me in the right direction.

Car: 1991 R32 GTR

Condition: Car turns over (cranks) but won't start.

Car died while driving. It was low on gas at the time so I assumed the fuel had run out. Topping it up with 10L didn't help, so I assumed fuel pump or fuel filter. Clean fuel is coming out the top of the fuel filter and the fuel pump primes, so it's OK there.

Facts:

  • First three cylinders have spark (only tested the first three)
  • Injectors are clicking (simple metal to injector and listen test proves that they are doing some work)
  • Fuel is pumping from the top of the fuel filter
  • ECU shows no error codes (all fine)
  • All fuses are OK

I considered AFM or air being an issue, but that wouldn't stop the car from firing up. The fact its turning over, fuel is pumping and the spark plugs have spark indicate that the ECU must be OK.

Does anyone have an idea of the next place to look?

Link to comment
https://www.sau.com.au/forums/topic/438667-car-wont-start-r32-gtr/
Share on other sites
Hadouken Grand Master

Hadouken

Posted
Posted

This might sound silly, but, were you driving hard when it cut out? Only reason I am asking is, if you have a big air leak, ie intercooler hose popped off, then it will crank and crank but almost never fire.

Another thing when you checked for spark, how did the spark plugs look? clean?

And try to take off the fuel line and prime the car, fuel will come out.

But by the sounds of things, I think you are not getting fuel.

Another thing, do you smell fuel in the bonnet after cranking it?

Blackkers Experienced

Blackkers

Posted
Posted

I'd be checking for air leaks or the afm wiring seeing as you have fuel and spark. Even if your fuel pump was stuffed but still providing some pressure you will get it to start, maybe not idle after that though.

Anyway, check all intake joiners Id reckon

cadelac Newbie

cadelac

Posted
  • Author
Posted

Thanks for your input!

#@Hadouken I was actually giving it a bit of boost when it cut, so you might be on the money there.

I've had a good look around and can't spot any big holes in the air hoses around the front area of the car. Its had a Trust intake upgrade at some stage, but a few of the joiners are showing wear. No big holes though.
I'll jack it up and check the back end (turbo area) and properly look over the AFM tonight.

Spark plugs look in good condition. Have run around 2000km on them (NGKs).

I've pulled the fuel rail and injectors off and fuel is definitely getting through the injectors (the fuel poured out of the first injector when the fuel pump primed). Will get them flow tested while they're out.
I've also tried manually turning the CAS with the injectors unplugged and a little fuel in the block and it's detonating, so I'm guessing CAS or air is the right place to be looking.

I'll update you when I can.

cadelac Newbie

cadelac

Posted
  • Author
Posted

Would that not be your problem? Fuel should not pour out of an injector that is not supposed to be open.

Good point...! I'll need to double check whether it was pouring out when priming or when cranking.

What do you mean it's detonating when you turn the cas by hand? Why do you think something is wrong with the cas?

CAS was suggested above. There is a little fuel leftover and when turning the CAS the fuel is being ignited. Detonating is probably the wrong word - its igniting with a bang and burning up the fuel (flames out the injector holes) which I expected.

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

    • Turbodoc
      Noobie Stagea owner..

      By Turbodoc · Posted

      Hey Dave, welcome aboard! Good to see another soon-to-be Stagea owner here. The wagons are awesome — plenty of space, still got that Skyline DNA, and loads of potential if you’re into mods. Definitely post up pics when you get it, everyone here loves seeing new builds. What model/year are you looking at?
    • GTSBoy
      Duncan's V37.......race car?

      By GTSBoy · Posted

      See if you can thermal epoxy a heatsink or two onto it?
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      The other problem was one of those "oh shit we are going to die moments". Basically the high spec Q50s have a full electric steering rack, and the povo ones had a regular hydraulic rack with an electric pump.  So couple of laps into session 5 as I came into turn 2 (big run off now, happily), the dash turned into a christmas tree and the steering became super heavy and I went well off. I assumed it was a tyre failure so limped to the pits, but everything was OK. But....the master warning light was still on so I checked the DTCs and saw – C13E6 “Heat Protection”. Yes, that bloody steering rack computer sitting where the oil cooler should be has its own sensors and error logic, and decided I was using the steering wheel too much. I really appreciated the helpful information in the manual (my bold) POSSIBLE CAUSE • Continuing the overloading steering (Sports driving in the circuit etc,) “DATA MONITOR” >> “C/M TEMPERATURE”. The rise of steering force motor internal temperature caused the protection function to operate. This is not a system malfunction. INSPECTION END So, basically the electric motor in the steering rack got to 150c, and it decided to shut down without warning for my safety. Didn't feel safe. Short term I'll see if I can duct some air to that motor (the engine bay is sealed pretty tight). Long term, depending on how often this happens, I'll look into swapping the povo spec electric/hydraulic rack in. While the rack should be fine the power supply to the pump will be a pain and might be best to deal with it when I add a PDM.
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      And finally, 2 problems I really need to sort.  Firstly as Matt said the auto trans is not happy as it gets hot - I couldn't log the temps but the gauge showed 90o. On the first day I took it out back in Feb, because the coolant was getting hot I never got to any auto trans issues; but on this day by late session 3 and then really clearly in 4 and 5 as it got hotter it just would not shift up. You can hear the issue really clearly at 12:55 and 16:20 on the vid. So the good news is, literally this week Ecutek finally released tuning for the jatco 7 speed. I'll have a chat to Racebox and see what they can do electrically to keep it cooler and to get the gears, if anything. That will likely take some R&D and can only really happen on track as it never gets even warm with road use. I've also picked up some eye wateringly expensive Redline D6 ATF to try, it had the highest viscosity I could find at 100o so we will see if that helps (just waiting for some oil pan gaskets so I can change it properly). If neither of those work I need to remove the coolant/trans interwarmer and the radiator cooler and go to an external cooler....somewhere.....(goodbye washer reservoir?), and if that fails give up on this mad idea and wait for Nissan to release the manual 400R
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      So, what else.... Power. I don't know what it is making because I haven't done a post tune dyno run yet; I will when I get a chance. It was 240rwkw dead stock. Conclusion from the day....it does not need a single kw more until I sort some other stuff. It comes on so hard that I could hear the twin N1 turbos on the R32 crying, and I just can't use what it has around a tight track with the current setup. Brakes. They are perfect. Hit them hard all day and they never felt like having an issue; you can see in the video we were making ground on much lighter cars on better tyres under brakes. They are standard (red sport) calipers, standard size discs in DBA5000 2 piece, Winmax pads and Motul RBF600 fluid, all from Matty at Racebrakes Sydney. Keeping in mind the car is more powerful than my R32 and weighs 1780, he clearly knows his shit. Suspension. This is one of the first areas I need to change. It has electronically controlled dampers from factory, but everything is just way too soft for track work even on the hardest setting (it is nice when hustling on country roads though). In particular it rolls into oversteer mid corner and pitches too much under hard braking so it becomes unstable eg in the turn 1 kink I need to brake early, turn through the kink then brake again so I don't pirouette like an AE86. I need to get some decent shocks with matched springs and sway bars ASAP, even if it is just a v1 setup until I work out a proper race/rally setup later. Tyres. I am running Yoko A052 in 235/45/18 all round, because that was what I could get in approximately the right height on wheels I had in the shed (Rays/Nismo 18x8 off the old Leaf actually!). As track tyres they are pretty poor; I note GTSBoy recently posted a porker comparo video including them where they were about the same as AD09.....that is nothing like a top line track tyre. I'll start getting that sorted but realistically I should get proper sized wheels first (likely 9.5 +38 front and 11 +55 at the rear, so a custom order, and I can't rotate them like the R32), then work out what the best tyre option is. BTW on that, Targa Tas had gone to road tyres instead of semi slicks now so that is a whole other world of choices to sort. Diff. This is the other thing that urgently needs to be addressed. It left massive 1s out of the fish hook all day, even when I was trying not too (you can also hear it reving on the video, and see the RPM rising too fast compared to speed in the data). It has an open diff that Infiniti optimistically called a B-LSD for "Brake Limited Slip Diff". It does good straight line standing start 11s but it is woeful on the track. Nismo seem to make a 2 way for it.
×
×
  • Create New...