Spark Plug Question
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Joined: Sep 2006
Posts: 63
Likes: 0
Okay, that was silly. Sorry about that, Chief!
Maybe this will be a little more useful:
Spark Plugs
http://www.dansmc.com/sparkplugs1.htm
(be sure to click on the links to get his pix)
or:
Verrill: Plug Color Chart
http://www.verrill.com/moto/sellingg...colorchart.htm
or here:
All About Your Engine's Spark Plugs
http://www.centuryperformance.com/spark.asp
or you could browse this Google search:
Here
It's a Good Idea, in my experience, to set your gaps as wide as your ignition will allow to still reliably fire at the highest RPM you run. Trucks, boats, motorcycles, cars, lawnmowers, all have benefitted from wider gaps than "stock", especially with a "hotter" coil. Okay, it's not NO2, but every little bit helps.
That's assuming a lot, but it's just my two cents worth...
Maybe this will be a little more useful:
Spark Plugs
http://www.dansmc.com/sparkplugs1.htm
(be sure to click on the links to get his pix)
or:
Verrill: Plug Color Chart
http://www.verrill.com/moto/sellingg...colorchart.htm
or here:
All About Your Engine's Spark Plugs
http://www.centuryperformance.com/spark.asp
or you could browse this Google search:
Here
It's a Good Idea, in my experience, to set your gaps as wide as your ignition will allow to still reliably fire at the highest RPM you run. Trucks, boats, motorcycles, cars, lawnmowers, all have benefitted from wider gaps than "stock", especially with a "hotter" coil. Okay, it's not NO2, but every little bit helps.
That's assuming a lot, but it's just my two cents worth...
Instructor
Joined: Mar 2006
Posts: 233
Likes: 0
From: Fishers IN
I just replaced a set in my '77 because it was running like sh*t. Idle & revved fine, put it in drive and it missed like crazy. Plugs looked dry and not burned, but electrode (hooked part) was as white as snow.
Looked it up, found out this is called "high speed glazing". It causes misfiring under power. Replaced plugs and wires. Runs like a champ!
Was going to post my own thread with pics, so someone could explain this to me...now I'll just use Leapin' Lizard's links. Thanks LL!
Looked it up, found out this is called "high speed glazing". It causes misfiring under power. Replaced plugs and wires. Runs like a champ!
Was going to post my own thread with pics, so someone could explain this to me...now I'll just use Leapin' Lizard's links. Thanks LL!
Drifting
Joined: Sep 2006
Posts: 1,986
Likes: 21
From: Columbus MN
Arcing to header?
I had a similar problem that was caused by a cracked spark plug wire on #1 and a cracked spark plug boot on #7.
The wire and boot had been fried by heat from the header. The misfiring was intermittent at first because the wire or boot didn't alway arc to the header.
The wire and boot had been fried by heat from the header. The misfiring was intermittent at first because the wire or boot didn't alway arc to the header.
