Spark Plug Change

[Vision]

Anybody know of a video/blog post on changing these?

What brand is best?

[tortoise]

Also consider performing a compression test . . requires 10mm adapter.

How to install a spark plug on a gy6 qmb139 chinese scooter / moped.

Example of low compression scooter won't start

[Jim Moore]

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,

[Jim Moore]

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?

[Stig / Major Tom]

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

[BettinANDlosing]

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.

[Vision]

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.

[BettinANDlosing]

What Iridium NGK is comparable to the CR7HSA? I don't see it.

CR7HIX is the right iridium, they last FOREVER!!!!

[Stig / Major Tom]

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

[Vision]

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.

[bluescoot125]

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?