NGK 9s
#1
Grumpy Lurker
Thread Starter
Join Date: Feb 2001
Location: LA
Posts: 462
Likes: 0
Received 0 Likes
on
0 Posts
NGK 9s
I am installing NGK 9's on all four plugs tomorrow.
Bought four trailing plugs from mazda.
Do i need to gap them? If so how do I do that?
My car is doing somethign strange and I suspect it's the current plugs. I bought the car back in July and haven't changed the plugs.
Thing is After the car gets run hard, or even a few light runs it starts acting up. Looses some power and makes fast clicks and I can't spool up boost as fast. I have to stay off the throttle a couple seconds and everythign goes back to normal. Are my current plugs fouling?
Bought four trailing plugs from mazda.
Do i need to gap them? If so how do I do that?
My car is doing somethign strange and I suspect it's the current plugs. I bought the car back in July and haven't changed the plugs.
Thing is After the car gets run hard, or even a few light runs it starts acting up. Looses some power and makes fast clicks and I can't spool up boost as fast. I have to stay off the throttle a couple seconds and everythign goes back to normal. Are my current plugs fouling?
#4
Senior Member
iTrader: (1)
Join Date: Mar 2001
Location: Bedford, MA, USA
Posts: 379
Likes: 0
Received 0 Likes
on
0 Posts
What mods do you have? With the weather getting colder up in the northeast, I've found that the car runs MUCH better with 7s and 9s. My car is mostly stock (downpipe, racing beat intake duct, K&N filter). Only when the temperature is above 80 does the car run better with 9s alone. In fact with just 9s in temps below 60 degrees, I get a "stumble" at or around 5-5.5k rpm.
Last edited by f2racer; 11-04-01 at 06:38 AM.
#5
Lives on the Forum
plugs would be good to try. never hurts.
i had this problem were it would clear up after i let off the gas then act up again. My car would start to stumble and no make boost after 4.5-5k when the car was warmed up. if i turned the car on in the morning and just wooped it. it was fine. made boost, was smooth. until i tried it again. my car would work great for the first 2 minutes of driving. My problem was a temp. sensor that was telling the ecu the car was runing extreemely hot. even when it was not. the next thing i will tell you was not my problem, but may be yours??? anyway this was one thing (among almost everythng in my car) i replaced trying to figure out my problem.
the other thing you may want to look into is a new wiring harness for the coils. the stock one has a ground on it that grounds very close to wires and causes arcing. the new one does away with the ground. you can get it from mazduh, i got mine from pettit for about $35-40
good luck
i had this problem were it would clear up after i let off the gas then act up again. My car would start to stumble and no make boost after 4.5-5k when the car was warmed up. if i turned the car on in the morning and just wooped it. it was fine. made boost, was smooth. until i tried it again. my car would work great for the first 2 minutes of driving. My problem was a temp. sensor that was telling the ecu the car was runing extreemely hot. even when it was not. the next thing i will tell you was not my problem, but may be yours??? anyway this was one thing (among almost everythng in my car) i replaced trying to figure out my problem.
the other thing you may want to look into is a new wiring harness for the coils. the stock one has a ground on it that grounds very close to wires and causes arcing. the new one does away with the ground. you can get it from mazduh, i got mine from pettit for about $35-40
good luck
#6
Lives on the Forum
Originally posted by martini
nope, no need to gap them.
why not use some ATF while you're down there and replacing the plugs?
nope, no need to gap them.
why not use some ATF while you're down there and replacing the plugs?
why martini? what in his problem sounded like he may need to put atf in the motor? the car starts. oh i know....you are going to say "to clean out the carbon deposits"
#7
Lives on the Forum
Re: NGK 9s
Originally posted by twinturboteddy
I am installing NGK 9's on all four plugs tomorrow.
Bought four trailing plugs from mazda.
Do i need to gap them? If so how do I do that?
I am installing NGK 9's on all four plugs tomorrow.
Bought four trailing plugs from mazda.
Do i need to gap them? If so how do I do that?
Trending Topics
#8
Grumpy Lurker
Thread Starter
Join Date: Feb 2001
Location: LA
Posts: 462
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the tip on changing the wiring harness to the coils.
I will definitely look into that.
"hey teddy, i dont know why, but i thought you were very good with the rotary. no?"
Doesn't hurt to ask questions right? I've owned RX-7's for over 2 years. But for one reason or another. I've never changed my own plugs. Someone else has worried about them.
I will definitely look into that.
"hey teddy, i dont know why, but i thought you were very good with the rotary. no?"
Doesn't hurt to ask questions right? I've owned RX-7's for over 2 years. But for one reason or another. I've never changed my own plugs. Someone else has worried about them.
#9
sold the FD...kept the FB
Originally posted by rxrotary2_7
the other thing you may want to look into is a new wiring harness for the coils. the stock one has a ground on it that grounds very close to wires and causes arcing. the new one does away with the ground. you can get it from mazduh, i got mine from pettit for about $35-40
the other thing you may want to look into is a new wiring harness for the coils. the stock one has a ground on it that grounds very close to wires and causes arcing. the new one does away with the ground. you can get it from mazduh, i got mine from pettit for about $35-40
Do you have a part number for that harness? I've been trying to get ahold of one but mazduh always says i have to buy the whole engine harne$$. Thanks
#10
Grumpy Lurker
Thread Starter
Join Date: Feb 2001
Location: LA
Posts: 462
Likes: 0
Received 0 Likes
on
0 Posts
Changed my oil and filter and plugs today.
Car started and ran a lot smoother overall.
Idle is more steady.
I warmed it up good and did some short full throttle runs at only .76 bar and it ran great.
Playing around with my brother i forgot to shift and bounced off the rev limiter and 2nd gear. **** i always do that.
However, after filling up on some 76 gas I detonated once. Knock value at 195 (I never go above 100)
Car started and ran a lot smoother overall.
Idle is more steady.
I warmed it up good and did some short full throttle runs at only .76 bar and it ran great.
Playing around with my brother i forgot to shift and bounced off the rev limiter and 2nd gear. **** i always do that.
However, after filling up on some 76 gas I detonated once. Knock value at 195 (I never go above 100)
#11
Senior Member
Join Date: Jul 2001
Location: Columbus, Ohio
Posts: 596
Likes: 0
Received 0 Likes
on
0 Posts
So with mods like mine:
FMIC
Intake
DP
MP
Exhaust
ECU@14psi
and 110 octane
Would it be smarter to go with 9's all around? I am currently having a stumble and hesitation thru the RPM's so I was going to chnge the plugs.......
My current plugs have about 7k on them, do plugs go bad that quik?
FMIC
Intake
DP
MP
Exhaust
ECU@14psi
and 110 octane
Would it be smarter to go with 9's all around? I am currently having a stumble and hesitation thru the RPM's so I was going to chnge the plugs.......
My current plugs have about 7k on them, do plugs go bad that quik?
#16
sold the FD...kept the FB
Originally posted by RX7 RAGE
They look really black. Black means fouled.....somebody correct me if im wrong.
They look really black. Black means fouled.....somebody correct me if im wrong.
I thought that black means that you're running rich.
#17
Ex fd *****
Originally posted by FD Racer
I thought that black means that you're running rich.
I thought that black means that you're running rich.
#18
Lives on the Forum
Originally posted by FD Racer
rxrotary2_7,
Do you have a part number for that harness? I've been trying to get ahold of one but mazduh always says i have to buy the whole engine harne$$. Thanks
rxrotary2_7,
Do you have a part number for that harness? I've been trying to get ahold of one but mazduh always says i have to buy the whole engine harne$$. Thanks
#19
Senior Member
Join Date: Jul 2001
Location: Columbus, Ohio
Posts: 596
Likes: 0
Received 0 Likes
on
0 Posts
I JUST got done putting on NGK 9's all around, I'm getting grease on the keyboard as we speak. Anyway, the car runs a whole lot better with 9's, very smooth and responsive, and it's like 45 degrees out tonight, and they rev right up...the only thing I did notice was the car took a little longer to start.
#20
There and back again
Join Date: Feb 2001
Location: Camarillo, Ca
Posts: 967
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Pressurized
I JUST got done putting on NGK 9's all around, I'm getting grease on the keyboard as we speak. Anyway, the car runs a whole lot better with 9's, very smooth and responsive, and it's like 45 degrees out tonight, and they rev right up...the only thing I did notice was the car took a little longer to start.
I JUST got done putting on NGK 9's all around, I'm getting grease on the keyboard as we speak. Anyway, the car runs a whole lot better with 9's, very smooth and responsive, and it's like 45 degrees out tonight, and they rev right up...the only thing I did notice was the car took a little longer to start.
Here is a cool little fact sheet for you all.
http://www.ngksparkplugs.com/techinf...tnumberkey.pdf
Our plugs:
Trailing BUR9EQ
Leading BUR7EQ
#23
Grumpy Lurker
Thread Starter
Join Date: Feb 2001
Location: LA
Posts: 462
Likes: 0
Received 0 Likes
on
0 Posts
Re: Plugs....
Originally posted by Bern
TTT,
I run 7's and 9's and you know how my car runs!
Bern
TTT,
I run 7's and 9's and you know how my car runs!
Bern
This is Berny our Socal7 leader. Who thinks that he beat me down. No sweat, I am still loudest.
Next cruise event. I am targeting a Silver Turbo First gen!!!!
#24
Original Gangster/Rotary!
iTrader: (213)
Originally posted by Pressurized
So with mods like mine:
FMIC
Intake
DP
MP
Exhaust
ECU@14psi
and 110 octane
Would it be smarter to go with 9's all around? I am currently having a stumble and hesitation thru the RPM's so I was going to chnge the plugs.......
My current plugs have about 7k on them, do plugs go bad that quik?
So with mods like mine:
FMIC
Intake
DP
MP
Exhaust
ECU@14psi
and 110 octane
Would it be smarter to go with 9's all around? I am currently having a stumble and hesitation thru the RPM's so I was going to chnge the plugs.......
My current plugs have about 7k on them, do plugs go bad that quik?
I'm running 9s trailing and 10.5 leading...my R1 won't run on all 9s now. I was cutting out above 5500 rpms...