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CrazyMotorcycleGuy
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Changing Spark Plugs on an 08 R1
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Booyaaaka
 
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Changing Spark Plugs on an 08 R1 - July 27, 2010, 08:26 PM

Has anyone ever change spark plugs on a 2008 Yamaha R1? I'm looking to do that on mine. Looks like the plugs are located closer to the front as opposed to directly accessible from under the air box. Looks like I'll have to remove some screws from the radiator to move it so I can have access to the spark plugs/coils. Any tips? Do I really have to remove the radiator? (pain in the azz) Thanks.


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whoa preppy......
 
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July 27, 2010, 08:27 PM

how many miles do you have on the bike? Plugs are usually good for 20k easy despite what the manual suggests.


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July 27, 2010, 08:35 PM

The bike is still fresh. Only 4,400 miles. Start up is kinda rough, now I'm having to engage twice to start. 1st gear is a little choppy and weak most of the time until the bike has been running for a bit. Idle seems ok, it's around 1,100-1,200. Sounds like a slight "clicking" noise coming from the engine too when in idle. Already did the basic maintenance like oil/oil filter change, coolant flush, and replaced the air filter. This actually happened before I did all the maintenance. I'm also planning to get it tuned and dynoed eventually.


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whoa preppy......
 
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July 27, 2010, 08:39 PM

the tick is probably the injectors. That's normal. You might get away with adding a bottle of Techron to your tank and going out for a several hour ride.


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July 27, 2010, 08:40 PM

Quote:
Originally Posted by Rocker77
The bike is still fresh. Only 4,400 miles. Start up is kinda rough, now I'm having to engage twice to start. 1st gear is a little choppy and weak most of the time until the bike has been running for a bit. Idle seems ok, it's around 1,100-1,200. Sounds like a slight "clicking" noise coming from the engine too when in idle. Already did the basic maintenance like oil/oil filter change, coolant flush, and replaced the air filter. This actually happened before I did all the maintenance. I'm also planning to get it tuned and dynoed eventually.
You should be good still... Sounds way to early for plug replacements. Ticking sound is prolly just the standard yamaha tick, mine does it too ( very noticeable/annoying in every gear and neutral). Though if you are concerned by all means get it looked at by a qualified pro


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July 27, 2010, 08:41 PM

Quote:
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the tick is probably the injectors. That's normal. You might get away with adding a bottle of Techron to your tank and going out for a several hour ride.
An entire bottle?? I thought that was good for 20 gallons. I have added 1/4 to 1/3 of a bottle after the winter nap. Just curious.


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July 27, 2010, 08:47 PM

the whole bottle is fine.


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July 27, 2010, 08:49 PM

Awesome. Thanks for the tip and info. I'll check out the Techron stuff, see if it does any better. Hope to get my 1st gear running smoother. I really notice the bike running rough and a little choppy when I go uphill in 1st gear from a cold start, even though I let it idle to about 150-160 in temperature. Any other ideas on the 1st gear choppyness?


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July 27, 2010, 08:59 PM

It's possible your TPS (throttle position sensor) is adjusted incorrectly or faulty. I'm not sure if the 2008 R1 has any sort of built in diagnostic. I know many newer bikes do however.


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July 27, 2010, 09:41 PM

Not too familiar with 07-08 R1's. Is your bike stock? Could be a bad map making it choppy, or if you've added exhaust and not tuned it. It's highly doubtful that it's your plugs. www.r1-forum.com would be a good place to ask as well.


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July 27, 2010, 10:06 PM

i had the similar symptoms and it was the plugs on my R6. check the coils for cracks. i don't think you have to remove the radiator, all you have to do is go from the top after removing the gas tank and filter assembly.


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July 31, 2010, 10:28 PM

When the engine is cold it will not be very smooth on the throttle.

If you have any mods to the bike and no dyno tune (if you're using a base map then get a baseline run to ensure your a/f is in order) then that will certainly cause a choppy feel with on the throttle.

The plugs are a PITA with the engine installed, you will need to remove the airbox and move the radiator to access everything. Go with NGK Iridiums.


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