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General => Technical | How To => Topic started by: Gnzbrg on June 02, 2018, 04:13:09 PM

Title: Iridium Plug Question
Post by: Gnzbrg on June 02, 2018, 04:13:09 PM: Based on suggestions from this forum, I got an Iridium plug for my new Like 200i, and will install it at the next valve adjustment. So my question is: do you set the gap differently when using one of these new fangled high tech gizmos, or is it the same as a normal plug? Inquiring Luddites wanna know...
Title: Re: Iridium Plug Question
Post by: big blue on June 02, 2018, 04:59:33 PM: Same plug gap applies with the iridium. They are supposed to come pre-gapped but it's always worth it to check. ;)
Title: Re: Iridium Plug Question
Post by: Stig / Major Tom on June 02, 2018, 05:58:11 PM: Quote from: Gnzbrg on June 02, 2018, 04:13:09 PM
Based on suggestions from this forum, I got an Iridium plug for my new Like 200i, and will install it at the next valve adjustment. So my question is: do you set the gap differently when using one of these new fangled high tech gizmos, or is it the same as a normal plug? Inquiring Luddites wanna know...
You going with a Denso, or NGK?
I actually tried but removed a Denso Iridium plug. Dont remember why - but found an engine behavior difference in the two. Put the NGK back in. Don't change the heat range, or the gap if that card tube is in place and unmolested.
Don't know what others found, but I found a slight increase in idle speed and idle stability - something I really appreciate when sitting stopped in heavy traffic!
Stig
Title: Re: Iridium Plug Question
Post by: Gnzbrg on June 02, 2018, 06:34:40 PM: NGK CR7HIX is the plug I chose, Stig, as per your suggestion. I'll be sure to check the gap and set to spec before installing. Smoothing out the idle is precisely what I'm hoping for...
Title: Re: Iridium Plug Question
Post by: big blue on June 02, 2018, 06:36:55 PM: The idle was definitely smoother with the iridium on my scoot. After 3000 miles I removed to check and the gap was unchanged and heat color was a lovely tan. I have not removed it again.
Title: Re: Iridium Plug Question
Post by: Stig / Major Tom on June 02, 2018, 11:34:14 PM: Quote from: big blue on June 02, 2018, 06:36:55 PM
The idle was definitely smoother with the iridium on my scoot. After 3000 miles I removed to check and the gap was unchanged and heat color was a lovely tan. I have not removed it again.
Glad to hear this - one wonders if it was just my imagination.
Also, hate fooling with these tiny and delicate little plugs. The fewer times I have to remove and install them in these engines the better for me!
Stig
Title: Re: Iridium Plug Question
Post by: hypophthalmus on June 03, 2018, 01:50:28 AM: You should gap them like normal, but remember that the Iridium electrodes are especially delicate. Take extra care not to put any pressure on them.