Bosch or NGK?

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TK

Addicted to ArboristSite
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Jan 3, 2011
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Maine
Name brand plugs. Champion, Bosch, NGK, Denso, all good. The only name brand I don't like are Autolites. Torch and others have been bad plays in my book. I have found that it is very seldom that a plug goes bad nowadays. Far more likely for them to wear out and need to be replaced due to age/usage than to failure - unless the conditions are lean, engine is knocking, or other severe issues. I really haven't seen a spark plug fail under normal circumstances. Outside of that, it's hard to blame it on the plug.
 
Andyshine77
Joined
Jan 25, 2004
Messages
11,305
Location
Cincinnati, OH
Name brand plugs. Champion, Bosch, NGK, Denso, all good. The only name brand I don't like are Autolites. Torch and others have been bad plays in my book. I have found that it is very seldom that a plug goes bad nowadays. Far more likely for them to wear out and need to be replaced due to age/usage than to failure - unless the conditions are lean, engine is knocking, or other severe issues. I really haven't seen a spark plug fail under normal circumstances. Outside of that, it's hard to blame it on the plug.

I've had new Champion that didn't work, I've seen a couple bad Denso plugs as well.
 
jus2fat

jus2fat

Two Harley Fatboys
Joined
Jan 24, 2008
Messages
2,742
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Hoot Owl Hollar
I've had new Champion that didn't work, I've seen a couple bad Denso plugs as well.
My Advance Auto store doesn't even offer Champion plugs for sell via customer complaints..!!
I don't know about the whole chain..??

Back in my youth...Champion plugs were pretty much what everyone bought.

Same with Fram oil filters now...cheap crap...Purolator oil filters..much better..!!
:cheers:
J2F
 
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Log Hogger

Log Hogger

ArboristSite Operative
Joined
Oct 25, 2005
Messages
378
Location
Michigan
NGK in the Husqvarnas, Bosch in the Stihls.

I tried a Bosch in a Husqvarna once and it would not even start. Tried the same plug in a Stihl and it fired up in two pulls. Put an NGK in the Husqvarna, and it started in two pulls. Both plugs were new and gapped to .020". Anyone know an explanation for this???
 
dingeryote

dingeryote

Blueberry Baron
Joined
Nov 21, 2008
Messages
13,603
Location
Michigan
Whatever came in the saw to start with.

I reckon the Army of Engineers and nerds at Stihl and Husky picked the ones they did, for a reason.

Seems to work. Never had a any plug issues that weren't my own fault.

Stay safe!
Dingeryote
 

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