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Best type of spark plugs for chainsaws

Started by tbrickner, April 10, 2011, 10:56:12 PM

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realzed

#25
September 25, 2021, 08:43:15 PM
I had read about a brand of plug that was somewhat known for the electrode tips occasionally breaking off to create havoc inside especially chainsaw cylinders..
That would obviously make quite a mess before one of those bits finally got ejected or wedged into the squish area!  
I thought it was the NGK brand - but I'm not sure now - it's been a while since I read about it.
Seems to me that was the reason why I went on a mission a few years back to try and find appropriate Bosch plugs for all of my small engine equipment..
I'll have to try a Google it for a follow up  

barbender

#26
September 25, 2021, 09:46:13 PM
I had an NGK plug do just that in my Jonsered 2171, pretty well destroyed the piston and cylinder. 
Too many irons in the fire

Sauna freak

#27
September 25, 2021, 10:14:12 PM
Nagasakis in all my small engines except the outboard.  I still prefer the champions for backtrolling there.  Splitfires ran really good in the 15 Johnson, but the 25 Merc hates them.
Sauna... like spa treatment, but for men

sawguy21

#28
September 26, 2021, 11:46:58 AM
I like NGK, never had a problem with them and they are readily available. I remember having problems with Champion, at least one out of every box would not fire or would quit in the first ten minutes but that was many years ago. I hope quality control has improved. Bosch is also very good but I seldom see them outside the bike and snowmobile shops.
old age and treachery will always overcome youth and enthusiasm

barbender

#29
September 26, 2021, 12:27:54 PM
I would never use a Champion plug on purpose. They used to let me down all the time in ATVs.
Too many irons in the fire

Real1shepherd

#30
September 28, 2021, 11:30:35 AM
Champion was a great plug company, once upon a time....nothing better. Then sometime in the late 70's they started to have reliability issues. I starting running Autolite plugs in my rigs without even a burp.

Original German Bosch plugs in my saws would last so long that I just replaced them as a matter of course...not from failure.

Landscape changed and I went to NGK in my small engines. Thought I got a bad lot when they were slowly going bad in my J'reds 80. Turned out to be a coil issue, but in the interim, I found an original lot of NOS German Bosch plugs on eBay. So that's what I'm using in my saws.

I can't see how a spark plug could 'age' not being used. 

Kevin
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