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Scooters - 125 to 300 => Agility 125 => Topic started by: Vision on August 31, 2014, 01:44:22 PM

Title: Spark Plug Change
Post by: Vision on August 31, 2014, 01:44:22 PM: Anybody know of a video/blog post on changing these?

What brand is best?
Title: Re: Spark Plug Change
Post by: tortoise on August 31, 2014, 03:59:28 PM: Also consider performing a compression test . . requires 10mm adapter (http://www.harborfreight.com/quick-connect-compression-tester-95187.html).

How to install a spark plug on a gy6 qmb139 chinese scooter / moped. (http://www.youtube.com/watch?v=XfjHTeIxAiA#ws)

Example of low compression scooter won't start (http://www.youtube.com/watch?v=pHJrA9NNcDM#ws)
Title: Re: Spark Plug Change
Post by: Jim Moore on September 01, 2014, 12:25:58 PM: Speaking of plugs, my bike came with a spare plug, an NGK CR7HSA. The book calls for a Champion P-RZ9 HC. Are those compatible?

Thanks,
Title: Re: Spark Plug Change
Post by: Jim Moore on September 01, 2014, 12:36:09 PM: Quote from: Jim Moore on September 01, 2014, 12:25:58 PM
Speaking of plugs, my bike came with a spare plug, an NGK CR7HSA. The book calls for a Champion P-RZ9 HC. Are those compatible?

Thanks,

The internets says "YES!." Anyone got any practical experience?
Title: Re: Spark Plug Change
Post by: Stig / Major Tom on September 01, 2014, 02:00:26 PM: Quote from: Jim Moore on September 01, 2014, 12:36:09 PM
The internets says "YES!." Anyone got any practical experience?
I'd put the NGK back in ...or go to the Iridium NGK ($3 vs $7 for the Iridium)
Most autoparts stores can get you that NGK overnight.
This is the same plug my scoot uses.
Stig
Title: Re: Spark Plug Change
Post by: BettinANDlosing on September 01, 2014, 04:23:12 PM: Quote from: Jim Moore on September 01, 2014, 12:25:58 PM
Speaking of plugs, my bike came with a spare plug, an NGK CR7HSA. The book calls for a Champion P-RZ9 HC. Are those compatible?

Thanks,
NGK all day!!!!! Make sure you start the plug by hand, it's very easy to cross thread the aluminum and of you do its a sh** ton of work to get the head off and helicoil it.
Title: Re: Spark Plug Change
Post by: Vision on September 01, 2014, 08:51:56 PM: Quote from: Stig on September 01, 2014, 02:00:26 PM
I'd put the NGK back in ...or go to the Iridium NGK ($3 vs $7 for the Iridium)
Most autoparts stores can get you that NGK overnight.
This is the same plug my scoot uses.
Stig

What Iridium NGK is comparable to the CR7HSA? I don't see it.
Title: Re: Spark Plug Change
Post by: BettinANDlosing on September 01, 2014, 10:54:57 PM: Quote from: Vision on September 01, 2014, 08:51:56 PM

What Iridium NGK is comparable to the CR7HSA? I don't see it.
CR7HIX is the right iridium, they last FOREVER!!!!
Title: Re: Spark Plug Change
Post by: Stig / Major Tom on September 02, 2014, 10:30:26 AM: Quote from: BettinANDlosing on September 01, 2014, 10:54:57 PM
CR7HIX is the right iridium, they last FOREVER!!!!
Yep, that's the one I'm running in my Like200i.
Will likely boost your idle by a few RPMs.....gave me a slightly more reassuring idle while waiting at lights.
Stig
Title: Re: Spark Plug Change
Post by: Vision on September 29, 2014, 01:28:00 AM: So this weekend after an oil change I replaced the regular NGK with 3k on it with an Iridium.

I'm impressed. I don't know if the improvement came from a fresh plug, the Iridium, or both, but the bike has a little more power. There is more pep on the low end and with the throttle wide open. I'll get a surge of power on long hills where there wasn't any before the change.

Great stuff. Thanks guys. I'm surprised.
Title: Re: Spark Plug Change
Post by: bluescoot125 on October 30, 2014, 07:37:04 PM: Quote from: BettinANDlosing on September 01, 2014, 10:54:57 PM
CR7HIX is the right iridium, they last FOREVER!!!!
im going to get this plug for my agility 125 last time I went to advanced auto I asked if they could find iridium to replace the CR7HSA and he did know how or something. This is the same plug in an iridium though?