R33 S2 Gtst Jolting Issues While Turbo Is Boosting

[Nanga312]

Hey guys,

i recently bought a 1997 S2 R33 gtst,

I have changed the coil packs and the cleaned the AFM along with buying a new pod filter.

Had the Cam Belts re done etc etc and she was running amazing except for when i go to boost it feels as though the power isnt there..

I then went and changed the spark plugs to NGK etc.

Now when im reaching high rev's about to hit boost the car just jolts... this has never happened be4. started happening after i changed the spark plugs. (note i have not re-gaped the plugs or anything)

My first thought was that maybe its the fuel pump but honestly no idea.

does anyone have any idea what the issue maybe.

Thanks in advance.

[Plattsy]

take plugs out.

measure them to .8.

put them back in.

[Nanga312]

Thanks Plattsy will do

[Plattsy]

keep us updated mate, but shoudl make a difference.

things will need to get a lot more specific if it doesnt work.

[Nanga312]

haha no worries Paul.. i am in the process of gapping my plugs atm so ill chuck em in tonight and go for a spin.. will let you know how i go.

[Plattsy]

1 other thought chap, did you install a boost controller? if you do, make sure it isnt set above 10-12 psi... if it is, just click it back a few.... you could be hitting the brick wall of boost cut.

[Nanga312]

Hey paul i dont have a boost controller atm. Plugs went back in tonight and she isn't jolting anymore although now it feels like she is cutting out while trying to boost almost as if it cant handle it. Any ideas? Im thinking ill have to send her down to the mechanics.

Cheers

[Plattsy]

if it is doing it at about 4500 rpm my man, its your coil packs. very common problem as with age they deteriorate.

find a spare set from some where and swap them out...

now bare in mind they are series dependant. s2 33 coils wont work on s1.

33 gtr coils will work on s1 but not s2. should be plenty around, if not check out amayama.com for a full set of replacement oem ones.

[Nanga312]

Thanks mate... changing the coil packs was the first thing i did when i bought the car... i have ordered spitfire coil packs which should arrive today or tomorrow so ill put them in and see how we go.. thanks for ur help.

[Plattsy]

righto!

if you have 12 coilpacks swap and change with them, find six that work. its a pain but always good to have em....

all good mate, do us a favour, WHEN you sort it, cos you will, pop back and give it an answer.

nothing worse than googling a problem, reading a thread, then finding out the OP didnt say what it was!

[Nanga312]

tell me about it... the spitfire coil packs just arrived so after wrk ill chuck them in and let you no how i go.. thanx

[Nanga312]

hey mate.. so last night i swapped all 6 coil packs to spitfire and shes running 100%.. very happy

Thanks for the assistance mate really appreciate it..

[Plattsy]

no problems mate!

do what i said with the coilpacks tho man..... rotate them thru so you can find the dead ones...

alsways good to have a spare set!

[Nanga312]

will do.. thanx man

[shubby0901]

Ive been having the same problem. Need to order some coipacks asap...good to know someone else had same problem and fixed it