Quick Spark Plug Question

[ClutchBurndout-:(]

Hi all, im just pulling my spark plugs out today and noticed the guy who serviced the car has put the following spark plugs in

NGK BKR5E 11

now from my knowledge this means that its heat range is 5 and the spacing is 1.1

my question is, is this ok for a stock (apart from pod filter) RB25DET R33?

if not, what should i be putting in there? can i use the current spark plugs and close the gap? im also having a slight miss firing problem on idle, can this be the reason why?

any help is great ta!

[BundyBear]

Hi all, im just pulling my spark plugs out today and noticed the guy who serviced the car has put the following spark plugs in

NGK BKR5E 11

now from my knowledge this means that its heat range is 5 and the spacing is 1.1

my question is, is this ok for a stock (apart from pod filter) RB25DET R33?

if not, what should i be putting in there? can i use the current spark plugs and close the gap? im also having a slight miss firing problem on idle, can this be the reason why?

any help is great ta!

chutch, I changed mine b4 chrissy and my mechanic said go 4 the 5z. 6z if ya got a few modsand hi boost (12psi+), I think the 1.1mm is OK, Close the gap if ya have misfire probs.

Which plug you use comes down to the mods. I run 5z ($3 each NGKz, changed every 3500km) & have no probs in my R33S2 with a 3" turbo back, pod,9~10psi & mines ECU (just pours more fuel in) , Oh & standard coil packs... Daily driver 2

how was it running b4 you pulled the plugs??

Hany Chart VVV

[blind_elk]

BKR5E-11 is the recommended Iridium plug for the RB25DET. If you like, you can close the gap a bit, say 1mm.

[ClutchBurndout-:(]

it was running a bit rough, it would go up and down slighty (the revs) and it also paused the revs like brrrr brrrrrrrrrrrrrbrrrrbrrrrrrrr un eavenly, should i close the gap? to .8 or something? i have no mods apart from a pod

ta

[BundyBear]

it was running a bit rough, it would go up and down slighty (the revs) and it also paused the revs like brrrr brrrrrrrrrrrrrbrrrrbrrrrrrrr un eavenly, should i close the gap? to .8 or something? i have no mods apart from a pod

ta

Sounds like the clasic lack of backpresuer in the exhause ??? you said standard but so....

I'd look at plug packs or maybe blocked injecter...

a consult program like ECUTalk/Nissan DataScan would show up faulty AFM's etc, could be worth a look (datascan can shut off each cylinder, you might be able to tell if its one/two pots misfiring(plugpack) or random(sensor)

[ClutchBurndout-:(]

my exhaust is mostly stock, except the last owner has put a 3 inch pipe after the dump and front pips till the stock axel pipe/muffler, would this cause the no back pressure?

ive run a injector cleaner through, but i dont think there blocked because when your accelorating its fine, it only seems to do it on idle

[BundyBear]

cluch,

just did a quick search (rough idle) n found these

http://www.skylinesaustralia.com/forums/Ro...=r33+rough+idle

http://www.skylinesaustralia.com/forums/Ro...=r33+rough+idle

http://www.skylinesaustralia.com/forums/Id...=r33+rough+idle

also check the vacume lines around the turbo & BOV 4 splits and reset the ECU ( they self learn )

cheers bundy

Edited January 10, 2010 by BundyBear