Best spark plugs for CL9 Accord Euro (2003)

**denot** · 02-09-2009 10:30 AM

is there any effect in changing the OEM plugs to something better. I was thinking of replacing mine (CU2) to NGK iridium before, but since aarong said it comes as OEM with CL9. I shouldnt be bothered anymore right?

**Type R Positive** · 02-09-2009 11:46 AM

Originally Posted by denot

is there any effect in changing the OEM plugs to something better. I was thinking of replacing mine (CU2) to NGK iridium before, but since aarong said it comes as OEM with CL9. I shouldnt be bothered anymore right?

No, not really. Only if the ones you got have had it.

Take one out and have a look at what it is. NGK iridiums are good plugs, I run them in my dirtbike. They just last shitloads longer than cheapo plugs.
There was no way I could tell any performance difference between a hotter or colder plug, different types of plugs, or different brands of plugs.

**craze** · 02-09-2009 01:46 PM

i think you might get better fuel consumption by changing the spark plugs

**aaronng** · 02-09-2009 02:56 PM

Originally Posted by craze

i think you might get better fuel consumption by changing the spark plugs

Changing them to which plugs? That is the question.

Iridiums already have one of the best sparks out there with their fine tip.

**craze** · 02-09-2009 08:35 PM

Originally Posted by aaronng

Changing them to which plugs? That is the question.

Iridiums already have one of the best sparks out there with their fine tip.

yeah that's true thanks aaron

**corn_flakes** · 16-04-2011 02:24 PM

my car has done about 45k in 5 years...do i or should i change the spark plugs???

i took them out today to inspect them and they still look ok...a bit dirty and brown but not black or fouled. is it worth replacing them or do they still have alot of life left? they're stock NGK iridiums btw.

i don't like the fact that my euro takes a good amount of cranking before it fires up, sometimes it takes even more cranks. it just feels really sluggish when starting up. so i'm trying to see what i could possibly change to make it crank better. the battery definitely isn't the problem since i have a new supercharge gold in there. what else could it be?

also wondering, these bottles of 'injector' cleaners that they sell...do they really do what they're supposed to? or am i wasting my money?

**SPQR** · 16-04-2011 04:37 PM

They make sharp popping sound... But because they're burried in a head and the big bang follows fast, you don't hear the plugs.

**Fredoops** · 16-04-2011 06:16 PM

Originally Posted by corn_flakes

my car has done about 45k in 5 years...do i or should i change the spark plugs???

i took them out today to inspect them and they still look ok...a bit dirty and brown but not black or fouled. is it worth replacing them or do they still have alot of life left? they're stock NGK iridiums btw.

i don't like the fact that my euro takes a good amount of cranking before it fires up, sometimes it takes even more cranks. it just feels really sluggish when starting up. so i'm trying to see what i could possibly change to make it crank better. the battery definitely isn't the problem since i have a new supercharge gold in there. what else could it be?

also wondering, these bottles of 'injector' cleaners that they sell...do they really do what they're supposed to? or am i wasting my money?

Injector cleaners do work. Especially if your car is getting old.

About Starting up problems... whens the last time you got your battery checked? I used to have the same sort of problems when my battery starts to die.

**tony1234** · 16-04-2011 07:23 PM

Originally Posted by corn_flakes

my car has done about 45k in 5 years...do i or should i change the spark plugs???

i took them out today to inspect them and they still look ok...a bit dirty and brown but not black or fouled. is it worth replacing them or do they still have alot of life left? they're stock NGK iridiums btw.

i don't like the fact that my euro takes a good amount of cranking before it fires up, sometimes it takes even more cranks. it just feels really sluggish when starting up. so i'm trying to see what i could possibly change to make it crank better. the battery definitely isn't the problem since i have a new supercharge gold in there. what else could it be?

also wondering, these bottles of 'injector' cleaners that they sell...do they really do what they're supposed to? or am i wasting my money?

I changed mine at approx.45K and yes it did make a bit of difference.Car was a bit more responsive.I wouldn't worry about using those injector cleaners in a bottle.Get a mech.to do the injector cleaner that is sprayed into the inlet manifold or get the Subaru injector cleaner in a spray can.It's really good stuff.

**dtngo** · 02-05-2011 11:45 AM

Does anyone have thoughts on buying the plugs from the US via eBay? They're around $65 delivered for a set of four. I haven't checked local prices but I'm sure they'd be $80+.