Spark plug question

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ned coed

ned coed

ArboristSite Member
Joined
Jan 24, 2006
Messages
80
Location
northwales
just did a comparison check of champion to ngk. from what i can make out the y. stands for a projected insulator which will mean that this plug will tend to run a little bit hotter than a standard cj. you could prob. use it if you where suffering from carbon deposits for example. the standard plug though is better suited if your constantly using high revs. regards, Ned.

p s; if you are using this plug beware you don,t suffer plug melt down.
 
wagonwheeler

wagonwheeler

ArboristSite Guru
Joined
Sep 15, 2005
Messages
661
Location
South Georgia
Plug Nomenclature

Just curious - which saw manuf recommend Champion? I'm accustomed to seeing Bosh and NGK recommended.

Anyway, something to note is the terminal connection for the plug wire. The NGK BPMR 7 A listed in my Stihl manuals has a one-piece (fixed) terminal. The NGK BPMR 7 my dealer carries has a screw-on terminal. The 'A' suffix is the difference and means there is a special condition. Obvioulsy the intent is to eliminate vibration from having any effect on that connection. Could be similar considerations on other plugs as well.

BPMR 7 A is actually: B (14mm) P (extended insulator) M (compact) R (resistor) 7 (heat range) A (special)

Check out:

http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf

This is NGK's nomenclature on plugs.

Chaser
 
Drive_1305

Drive_1305

ArboristSite Operative
Joined
Dec 14, 2005
Messages
132
Location
USA
I have a Super EZ auto, the acres site says use a DJ6J. When I got to the shop I asked for a CJ6J because I thought thats what it took. The guy said just use a CJ8. Do you think its ok to use it or should I get a different plug?
 
lovetheoutdoors

lovetheoutdoors

Addicted to ArboristSite
Joined
Feb 3, 2006
Messages
1,704
Location
nc
jonsered decomp button

I was getting ready to buy a jonsered 910 and the owner said the decomp button didnt work?? iwas wondering if this would be a problem?? thanks
 

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