Car Gets Hot Starts To Break Up

[ragnrok]

My 32 gtr starts and runs excellent when its cold, but as soon as it get's hot say maybe 10mins into driving it feels like it drops a cylinder and runs rough as hell. It blows black smoke when it does this, and continues for about 10mins then clears up, then goes back to the same thing. Ive changed the plugs and the coil packs, was thinking it could possibly be the igniter. Has anyone come accross this problem before?

[sl33py]

Get thee to a mechanic.

[GeeTR]

Could be faulty igniter (PTU) with heat as a catalyst. Could try zip tying to the firewall to see if the issue is less pronounced.

[GTR 400]

Hey Ragnrok,

I have just come from this exact situation, when i finally installed all of my mods cams,injectors, cooler everything when we put it on the dyno my car ran like shit after 10 min when she cooled down bingo went away, i spent hrs pulling of coils changing plugs earth straps etc,etc,etc ,anyway make it short i changed the IGNITOR and presto she ran perfect once again just like i remember it.

Borrow one of someone just to see if it works then you know your problem, this problem was really bad more so when i was driving on the street than the dyno.

I am 90% sure the ignitor is your problem seems common on our older skylines now parts are getting old and we are pushing more power out of what they ever had to do standard.

Hope this info helps you.

Cheers,

Dave.

[GeeTR]

...this problem was really bad more so when i was driving on the street than the dyno.

On the dyno, you've more then likely got your bonnet up, which aids air flow to the back of the motor

[ragnrok]

cheers for that guys. Found another igniter and its all sweet now. Was one of those little anoying things so glad its all sorted now, runs like a dream

Edited November 28, 2007 by ragnrok

[White GTS-T]

I'm having the exact same problem aswell. I went into Nissan today, and apparently a new igniter costs $700!

What do you guys think about doing something similar to this?

http://www.skylinesaustralia.com/forums/Ti...at-t195167.html

I will be hooking my car up to the consult tomorrom at Nissan so hopefully i can shed some more light on the situation. Nissan also said that you can send them away to be bench tested to determine exactly if it is a faulty igniter. Has anyone bothered to go this far?

And lastly does anyone know what igniters go for second hand?

Edited November 29, 2007 by White GTS-T