Jump to content
SAU Community

Recommended Posts

Hellow everyone,

I hope am posting in the right section of the forum.

I have R33 Series II GTST that has a Front Mount intercooler , Boost controller , Pod filter intake , Bov, Haltech Pro Plus ECU, 3" exhaust , upgraded turbo etc etc.

Now am having trouble with the car during startup. The car takes about 5-10 seconds of ignition.

I have already cleaned intake and throttle body and AAC valve as well.

My R33 has very different throttle body and half of the wires / plugs are not connected.

AAC valve is also different on this car and the wires having no plugs attached to it.

Please see this pictures attached.

Any help will be highly appreciated

thanks

post-75024-0-37037700-1336270805_thumb.jpg

post-75024-0-73547200-1336270865_thumb.jpg

Link to comment
https://www.sau.com.au/forums/topic/399457-cold-start-up-problem/
Share on other sites

Has it always had this issue or just started? Is there plenty of fuel getting to the fuel rail?

Does it start with some throttle applied?

Few possibilities is the fuel pump, fuel pressure regulator. With the reg u could try crimping the return line as u are attempting to start it

Thanks for the reply

its just the ignition Issue

Nah it doesnt get started by applying throttle its just long long startup!!

Its tuned @14 psi , it was perfectly fine till last week! , I don't know whats wrong I just cleaned intake and sensor thought it could be that.

Should I try replacing a fuel pump ?

BTW it has Cusco Fuel Catch can too (this thing is too complicated compared to one nice stock skyline I imported last year) :rolleyes:

Ok that tells me it is a fuel supply issue. Try crimping the retun line before starting.

Also take fuel line off before the rail and the amount of flow when priming.

If u are near me i could check it out with my pressure and flow gauge

I guess that could have been the problem

Okay let me explain

2 weeks ago I added Nulon Fuel Injector cleaner , Drove car back and then parked ( sunday)

Monday morning 7.20 am I started the car 1 failed attempt

2nd attempt it took about 5 second of starter motor's effort to give me a hope that this thing is going to turn on

3rd attemp was successful

So now after I wrote the reply went to Caltex and got about 20 litres of Vortex ( last time i used BP ultimate)

Car was warm and it started smoothly

so it can be a fuel issue too I suppose

I've got it service like a 1000kms ago and had changed oil filter , fuel filter , pod filter , engine oil (10w50) and other necessary things.

I shall see tomorow morning if it work properly

thanks again for the help mate. appreciate it

am in melbourne and you seem to be pretty far :(

Fuel cleaner could have dislodged some crap and its stuck somewhere else now.

Hope its not blocking an injector. that would be bad.

I had issues with my cold start circuit, so i stuffed half a Nerf dart in the pipe. Much better but not fixed.

If you wait for the fuel pump to prime the rail, does it start easier?

thanks mate

Yes I know now what the problem was!

It was that crappy Nulon Fuel injector cleaner

I used it 2 weeks ago and since then I had that problem

Yesterday I even cleaned intake of my car and then went for a drive , filled 20 litres of vortex ( last time I used bp ultimate)

and this morning car started normally!

Thanks guys for your help really appreciate it :)

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

    • Sounds like you've got an interesting adventure ahead here with local support if you have trouble! My guess is that, unboosted, you will be OK with a small upgrade like -9. What will happen is that once the stock ECU sees more airflow than it expects it will add a heap of fuel and pull a heap of timing to be safe because it can't understand how it could get that much air without there being an issue. You will see clouds of black smoke and it won't pull hard through the midrange and top end. So, overall it will be a bit frustrating but should be OK. If you are still nervous set the base timing back 2o through the CAS, but it will be even more sluggish everywhere. As said above through...this is not my guarantee your engine won't be blown into a million pieces, leaving you looking for very hard to find parts A better idea is get a computer with logging ASAP, wire in a wide band O2 sensor and a use remote tuner. I've done multiple cars this way and while it is not as good as a specific tune on a dyno they can get it 90% right. I'd suggest if you can afford an R33 GTR these days you can afford an ECU and tune. And if you can't afford that you sure won't be able to afford the rebuild if it goes bad in the meantime,.  
    • Yeah it would be nice if someone took the time to put that sort of information together, but there are a lot of variations in looms. I think you are making this way hard for yourself if you just want to get it running....sourcing an SR20 with the right wiring will be a billion times easier than matching the RB loom to an S15 chassis. If you do end up going this way, you just need to trace every wire in the loom with a multimeter, 95% of them will go to a location you can confirm at the ECU.....and then post it up for the next person who needs it  
    • Just top it up with water, and keep a general idea of how much you added. It is normal for water to be pushed into and pulled out of the reservoir through the cap, and it should not be more than half full or it will be likely to overflow when hot. Any decent mechanic can do a pressure test of the cooling system to confirm if you have a leak. Keep in mind if it is only leaking a little and when hot it may well evaporate before you see it hit the ground
    • I'd ask the shop what they used and use that. Mixing coolants is sometimes OK, sometimes not, and you have know the details of each coolant to know whether it's a good idea or not.
    • Is it alright to top up with just another green coolant?
×
×
  • Create New...