Spark plug change?!?!? - Suzuki GSX-R Motorcycle Forums
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post #1 of 18 (permalink) Old 11-29-2007, 09:15 AM Thread Starter
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Spark plug change?!?!?

quick question...took out my spark plugs to inspect and are perfectly fine...should i still run them for the next season??? my bike only has 2500 miles on it...and should i get hotter or colder ones, no discolor of the spark plugs(white or burnt)????
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post #2 of 18 (permalink) Old 11-29-2007, 09:43 AM
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Re: Spark plug change?!?!?

I can't remember if the manual has Inspect or Replace at that mileage. I replaced mine a little earlier but that was due to track miles.


Was the gap still within spec?
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post #3 of 18 (permalink) Old 11-29-2007, 09:48 AM
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Re: Spark plug change?!?!?

inspect around 4,000 replace at 7500. if they looks good I would leave them alone personally but if you do alot of racing most would say replace every season probably.

Last edited by MdBikerBoy; 11-29-2007 at 09:50 AM.
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post #4 of 18 (permalink) Old 11-29-2007, 12:35 PM
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Re: Spark plug change?!?!?

If you only put on 2500 a season and they look fine I wouldn't change them until the end of next season
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post #5 of 18 (permalink) Old 11-29-2007, 12:48 PM
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Re: Spark plug change?!?!?

Fuck you have em out, u might as well change em so you dont have to do it all over again...
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post #6 of 18 (permalink) Old 11-29-2007, 01:22 PM
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Re: Spark plug change?!?!?

Go to Advance and pick up some NGK Iridiums they will give you a better spark...should be a CR9EIX or whatever number you have on the plug in your bike right now just add IX to the end of the number....runs a little cleaner...should be around $7.99 a piece
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post #7 of 18 (permalink) Old 11-29-2007, 04:19 PM
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Re: Spark plug change?!?!?

I would replace them just because you have it all apart anyways...
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post #8 of 18 (permalink) Old 11-29-2007, 04:23 PM
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Re: Spark plug change?!?!?

replace with iridium but you dont want a hotter plug unless you need one.

by the way any feedback on these?
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post #9 of 18 (permalink) Old 11-29-2007, 08:06 PM
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Re: Spark plug change?!?!?

i was looking at those plug too.. looks pretty sick.. dont know if you will feel a difference... maybe there is some.. but very small i guess... i already did my plug change at 8000 with race filter...NGK.. they seem to work pretty good..
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post #10 of 18 (permalink) Old 12-01-2007, 09:59 PM
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Re: Spark plug change?!?!?

what color where the plugs when you took them out? if they are the color of a paper bag put the same cr9e back in the bike if the plug was wet and black put a cr8e in the bike. you want the plug to be the color of a paper bag and not wet or black! but since you have already taken them out go ahead and replace them. and for the iridium plugs it is a waste of money
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post #11 of 18 (permalink) Old 02-20-2008, 09:50 PM
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Re: Spark plug change?!?!?

YOu have my attn - What is a cre8? I just bought a 06 gsxr 1000 and the plugs are black at 7500 miles. ngk cr9e is what is in them now. Whats the difference?
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post #12 of 18 (permalink) Old 02-21-2008, 01:23 AM
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Re: Spark plug change?!?!?

CR8E is a hotter version of the CR9E std plug. If your plugs are black and wet then change to the CR8E. However if you've just bought the bike then id suggest you stay with the CR9E until you see what they are like from YOUR riding.
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post #13 of 18 (permalink) Old 02-21-2008, 01:23 AM
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Re: Spark plug change?!?!?

CR8 is a hotter plug. Same design, just runs one level hotter, which should burn better if you are running rich.

I blackish plug would indicate a rich mixture, or oil going up there. A hotter plug can cure some of that.

Cons: You got to watch your detonation. You may have to switch to higher octane gas as regular may explodes before its time due to the heat.

Also make sure that is the cause. For example, you may have a dirty air filter not allowing enough air. Consequently more fuel than air goes in and the plugs foul or get black.

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post #14 of 18 (permalink) Old 12-10-2008, 10:38 PM
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Re: Spark plug change?!?!?

I am slipping I have to repalce mine now
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post #15 of 18 (permalink) Old 12-10-2008, 10:45 PM
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Re: Spark plug change?!?!?

along with the plugs.....Who puts antisieze on the threads and why?
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post #16 of 18 (permalink) Old 12-10-2008, 10:55 PM
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Re: Spark plug change?!?!?

I don't put antisieze on my plugs, never have and never had a problem but most recommend it so you don't strip the threads in the block.

To the OP if your plugs are fine why spend the extra money? Service and Owner's manuals say to replace every 7,500 or so miles. You can replace if you want at 2,500 to but there's really no point if the bike is still running good and they don't have any abnormal wear.
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post #17 of 18 (permalink) Old 12-15-2008, 07:45 PM
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Re: Spark plug change?!?!?

hey guys,

how difficult is it to change the plugs yourself?? my plug change is pending to instead of taking it to the dealer i was planning to do it myself, i usually prefer woking on my bike myself...beeing a professional aircraft mech it usualy turns out fine...
so what u think? it ok to DIY?? also do we have the plug sized wrench in the tool kit?
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post #18 of 18 (permalink) Old 12-15-2008, 07:46 PM
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Re: Spark plug change?!?!?

besides i can borrow some antisieze from the work place too
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