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Nissan Sylphy Club > Car Problems > Spark Plugs


Title: Spark Plugs
Description: Improved performance?


riz - December 2, 2009 02:53 AM (GMT)
Dear All, i will be going for my 40K service end of this month and will need to replace my sparkplugs. Any recommendation on performance spark plug out there that slyphy user out there have installed? Will installing these void any Tan Chong warranty? :ph43r:

fooyc - December 2, 2009 03:52 AM (GMT)
I understand from the Japan owner's manual, Sylphy is equip with platinum spark plug, which typical Nissan-NGK plats plug, do last up to 80-100K km range. Not sure the heat range, I have yet to receive the car, to dissect the engine.

As for performance plug, like any other car, you do felt a "crispier" response at throttle when its still new, some time down the road, once you get used to it, its back to NIL again. Again, can't comment much without a physical car to dissect with.

spkster - December 4, 2009 02:39 AM (GMT)
I was advised by SC that the plugs are platinum. In any case, since Sylphy engine runs mainly around 1,000 to 2,500 RPM, won't it make the plugs last longer as it is fired lesser times for the same mileage when compared to other vehicles?

So far, I only notice from the ignition cable that they are supplied by Bosch. Made me extremely itchy to change the original plugs to Bosch 4 prong Iridium Fusion. B)
However, don't know how to DIY change it yet as the plugs are under the engine air intake ducts. :(

Previously on my N16, was using Denso Iridium, it does improve the consumption and pick up of the car.

xtec - December 4, 2009 10:43 AM (GMT)
bro better stick to ori one, comfirn can last for 100k km, no problem.
as u know, now a day car spark plug current supply to spark plug are control by ECU. and if u notice the cableconnect to spark plug are small size.

riz - December 6, 2009 03:41 PM (GMT)
xtrec? can last till 100K one ah? i thot have to replace new set at 40K..?

spkster - December 7, 2009 03:11 AM (GMT)
The last time I used NGK Platinum plugs (in Nissan packaging), the plugs only lasted for 70,000 KM. The ceramic body on one of the plugs had hairline crack and I had to change them prematurely.

riz - December 8, 2009 04:44 PM (GMT)
spkster was that for MR20 engine?

xtec - December 21, 2009 05:43 PM (GMT)
yap, it's for MR20 engine.
btw which car are using NGK platiniun hair line crack? i'm using NGK platinium for my ceffy & is over 120k km with out any problem. ( NGK PFR6G-11 )

my bluebird till now still not yet change 68k km.

riz - December 22, 2009 03:06 PM (GMT)
i guess spark plug will have to wait for after 3 year warranty..sumone also told be that good sparkplug may damage engine chamber due to burn too hot? izzit true guys? B)

xtec - December 24, 2009 05:51 AM (GMT)
bro riz

1st is better spark plug use back original one,unless u know what plug type u need to use for aftermarket. eg. PLUG HEIGHT/GAP
and for nissan engine that using platiniun plug, normally are very chosy type, better stick to ori else it will give u engine ping noise.

as i know NGK spark plug had different cat for different model of car using.

eg. for cefiro
NGK PFR5G-11 (HOT)
NGK PFR6G-11 (COLD)
NGK PFR7G-11 (COLDER)

while the same plug usin in .eg. Z350 using the same plug.

NGK PFR6G-11 (HOT)
NGK PFR7G-11 (COLD)

so is depending which plug do u use in which car model.

FYI(US)

I installed the NGK PFR6G-11 spark plugs today & was amazed at the difference one step colder plugs can make! I did not change the stock gap, which is 0.044". I bought them from a local dealer for $11.00/piece

My Maxima has been supercharged for about a month. I was running stock plugs the whole time & saw my EGT's reach 1400+ at highway cruise in 5th gear. I had to keep the car below 90 mph (top gear only) to keep EGT's below 1400F. Not any more

With the step colder, I've noticed my EGT's have gone down about 1000 degress across the board. Also. the temps come down a tad quicker. I also did this by the book. Di-electric grease & anti-seize compound!

On a side note: My stock (OEM NGK) plugs which were less than 3 months old, had signs of fouling. Just an FYI to current & future BOOST people. Get the colder plugs...ASAP!

riz - January 2, 2010 03:10 AM (GMT)
from feedback guys i guess i will keep the ori installed sparkplugs..however during service interval does TC mechanic inspect the condition of your sparkplugs or do you need to request for them to do this? any additional charges? :)

fooyc - January 2, 2010 10:57 PM (GMT)
They do, at a specific interval only. If you have your own preset interval, better tell them to, or walk straight to the mechanic. My TCEAS mechanic, "by default", will inspect my car spark plug, when the car is there for 'major' service.




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