spark plug gap?

pb3 · August 27th, 2011, 10:49 AM

.3mm correct?

Racer x · August 27th, 2011, 11:59 AM

0.7~0.8mm(0.03~0.04 in.)

CZroe · March 16th, 2012, 02:48 AM

This is the only relevantly titled thread when searching for "Spark Plug Gap," so I believe this goes here:

Don't use a Harbor Freight gap tool on NGK CR8E plugs. The gap opener portion of the tool simply can't grab the ground electrode. It's like the walls are too steep and cannot grab the electrode. I even looked up a YouTube video to make sure I was doing it right. If Harbor Freight can't get that right, I do not even trust their gap measurements.

It's also telling that the round UPC sticker was touching the outside instead of being centered, which adds it's thickness to anything measured in that portion if you don't fully remove it and the adhesive. I didn't remove it because 0.03" was just before that point and my plug clearances were tighter than that. I'm glad I didn't remove the sticker because now I have to return it!

Why can't Harbor Freight at least get this stuff right?! It wasn't even that cheap (about $4).

CZroe · March 18th, 2012, 12:49 AM

Well, it turns out that my plugs were actually already at 0.030" and the HF tool also measured wrong. I checked it against three Autozone ones that were less than half the price and had FUNCTIONAL gap openers!

August 27th, 2011, 10:49 AM	#1
pb3 ninjette.org member Name: parker Location: STL Join Date: Apr 2009 Motorcycle(s): 09 n250, 14 n300, 22 n400 Posts: 98	spark plug gap? .3mm correct?

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August 27th, 2011, 11:59 AM	#2
Racer x ninjette.org certified postwhore Name: Eric Location: Iowa City Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot. Blog Entries: 54 MOTM - Sep '18, Feb '16	0.7~0.8mm(0.03~0.04 in.)

March 16th, 2012, 02:48 AM	#3
CZroe CPT Falcon Name: J.Emmett Turner Location: Newnan, GA Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.	This is the only relevantly titled thread when searching for "Spark Plug Gap," so I believe this goes here: Don't use a Harbor Freight gap tool on NGK CR8E plugs. The gap opener portion of the tool simply can't grab the ground electrode. It's like the walls are too steep and cannot grab the electrode. I even looked up a YouTube video to make sure I was doing it right. If Harbor Freight can't get that right, I do not even trust their gap measurements. It's also telling that the round UPC sticker was touching the outside instead of being centered, which adds it's thickness to anything measured in that portion if you don't fully remove it and the adhesive. I didn't remove it because 0.03" was just before that point and my plug clearances were tighter than that. I'm glad I didn't remove the sticker because now I have to return it! Why can't Harbor Freight at least get this stuff right?! It wasn't even that cheap (about $4).

March 18th, 2012, 12:49 AM	#4
CZroe CPT Falcon Name: J.Emmett Turner Location: Newnan, GA Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.	Well, it turns out that my plugs were actually already at 0.030" and the HF tool also measured wrong. I checked it against three Autozone ones that were less than half the price and had FUNCTIONAL gap openers!