Hi from Brisbane: I have a problem - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

arbess · 14th July 2008, 11:26 AM

Not the best way to greet you all in the General maintenace section of this forum, but its better than nothing.

I am an active member of skylinesaustralia.com in Aus and I have posted my problem there with not much luck, so I thought I might give it a go here.

My r32 gtr has been suffering a stutter/hesitation/misfire, one of those, for some time now. It has been doing this for around a year now. The first instance it happened was after I tried Shell V-power Racing (100RON BUT 5% ethanol), and after I got a my new 5-puck button clutch.

To put it quite simply, the car will do its stutter/hesitation/misfire under 1/2 to full throttle. At low rpm such as 2000-4000 its jumpy higher than that its like the car is farting all the way to 8000. The car will rev all the way out, but with the jumping and farting all the way.

Things I have done to try and fix and fail to fix it are:
New spark plugs
Changed coils
changed coil loom
changed coil ignitor
change air flow meters
changed transfer case fluid
change gearbox fluid

there about the major things. I have also tried a few other things without success.

My gtr is on stock boost, at times saw 12psi, exhaust system, intakes, blitz bov's, thats about it.

Any help towards this would be kindly appreciated as I have not enjoyed the drive for such a long time and its really depressing =)

Arb

frostmotorsport · 14th July 2008, 11:51 AM

what gap are you running your plugs at? there is another sub-loom that apparently fails with heat also, but somewhat uncommon. at 12psi I'd look for NGK racing plugs @ heat range 7 or 8 and a 0.8mm gap.

Also, check for leaks round all the intercooler/turbo/vacuum pipes too.

arbess · 14th July 2008, 11:58 AM

Ive got the factory recommended 1.1mm gap with the NGK iridiums heat range 6. Where is this sub loom you speak of?

btw, I am back to stock boost.

I will check again for any vacuum leaks. when you say around the turbo, have you got anywhere specific?
I installed a mint condition r32 intercooler so i know the joins are good.

thanks

trel · 28th July 2008, 07:22 PM

try re-gapping your plugs if you are running slightly higher boost gap to 0.8mm even 0.7

Cornhoolio · 28th July 2008, 07:52 PM

Plug gap mate, 0.8mm and you will be sorted. Would change to grade 7's if running 12 or so psi though

covak2002 · 29th July 2008, 10:17 AM

i was running standard boost and plug gap 1mm and normal idle was great boost and the world collapsed regaped to .8 and wow what a change also did all the things you did coils filters and afm pain in it lol

Piggaz · 29th July 2008, 10:26 AM

Have you tired cleaning you injectors? A mate had a similar problem... cleaned his injectors and it was all hunky dory!

Benji27 · 29th July 2008, 12:25 PM

Quote:

Originally Posted by arbess

Hi from Brisbane: I have a problem

Sorry, we cannot do anything against that.

Have you tried to move to the UK ?

Cornhoolio · 29th July 2008, 05:29 PM

14th July 2008, 11:26 AM	#1 (permalink)
arbess New Users Join Date: Jul 2008 Location: Brisbane, AUS Posts: 2	Hi from Brisbane: I have a problem Not the best way to greet you all in the General maintenace section of this forum, but its better than nothing. I am an active member of skylinesaustralia.com in Aus and I have posted my problem there with not much luck, so I thought I might give it a go here. My r32 gtr has been suffering a stutter/hesitation/misfire, one of those, for some time now. It has been doing this for around a year now. The first instance it happened was after I tried Shell V-power Racing (100RON BUT 5% ethanol), and after I got a my new 5-puck button clutch. To put it quite simply, the car will do its stutter/hesitation/misfire under 1/2 to full throttle. At low rpm such as 2000-4000 its jumpy higher than that its like the car is farting all the way to 8000. The car will rev all the way out, but with the jumping and farting all the way. Things I have done to try and fix and fail to fix it are: New spark plugs Changed coils changed coil loom changed coil ignitor change air flow meters changed transfer case fluid change gearbox fluid there about the major things. I have also tried a few other things without success. My gtr is on stock boost, at times saw 12psi, exhaust system, intakes, blitz bov's, thats about it. Any help towards this would be kindly appreciated as I have not enjoyed the drive for such a long time and its really depressing =) Arb

28th July 2008, 07:22 PM	#4 (permalink)
trel New Users Join Date: Jul 2008 Location: Melbourne, Australia Posts: 4	try re-gapping your plugs if you are running slightly higher boost gap to 0.8mm even 0.7 __________________ wow....

28th July 2008, 07:52 PM	#5 (permalink)
Cornhoolio Iggle Piggle is the man Join Date: Sep 2005 Location: Aberdeen Posts: 419	Plug gap mate, 0.8mm and you will be sorted. Would change to grade 7's if running 12 or so psi though __________________ Cheers Ian コーンホーリオ

29th July 2008, 05:29 PM	#9 (permalink)
Cornhoolio Iggle Piggle is the man Join Date: Sep 2005 Location: Aberdeen Posts: 419	__________________ Cheers Ian コーンホーリオ

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14th July 2008, 11:51 AM	#2 (permalink)
frostmotorsport GTR Register Member Join Date: Aug 2007 Location: Wellington, NZ Posts: 765	what gap are you running your plugs at? there is another sub-loom that apparently fails with heat also, but somewhat uncommon. at 12psi I'd look for NGK racing plugs @ heat range 7 or 8 and a 0.8mm gap. Also, check for leaks round all the intercooler/turbo/vacuum pipes too.

14th July 2008, 11:58 AM	#3 (permalink)
arbess New Users Join Date: Jul 2008 Location: Brisbane, AUS Posts: 2	Ive got the factory recommended 1.1mm gap with the NGK iridiums heat range 6. Where is this sub loom you speak of? btw, I am back to stock boost. I will check again for any vacuum leaks. when you say around the turbo, have you got anywhere specific? I installed a mint condition r32 intercooler so i know the joins are good. thanks

29th July 2008, 10:17 AM	#6 (permalink)
covak2002 GTR Register Member Join Date: Nov 2007 Location: helston Posts: 207	i was running standard boost and plug gap 1mm and normal idle was great boost and the world collapsed regaped to .8 and wow what a change also did all the things you did coils filters and afm pain in it lol

29th July 2008, 10:26 AM	#7 (permalink)
Piggaz GTR Register Member Join Date: Sep 2002 Location: Sydney, Australia Posts: 756	Have you tired cleaning you injectors? A mate had a similar problem... cleaned his injectors and it was all hunky dory!