spark plugs

[lgower]

what isrecommendedd by all for a 0540 carbed.thanks, Lee

 

[OVER BUDGET]

I use champion D-16

Tom

 

[harvey]

I'm running Denso L 14U

 

[mwood7800]

if you use the denso be sure to use the a/c copper washers. I had some come loose using the washers that came with them, cylinders ran so hot the valve seats came loose. Never had a problem with any other plug. Also the Denso seems to resist rust better.

 

[Mike Thurman]

I suggest you use a Champion UD-16 gapped at .020.

 

[hmgm123]

I suggest you use a Champion UD-16 gapped at .020.

Do you recommend the same thing for a super charge 0540 Mike?

 

[FP1201]

NGK makes a "W" series plug that's 18mm, they work great in old snowmobile and farm tractor engines, and wouldn't be a bit surprised with excellent results in other applications. The higher the number, the colder the plug, "9" are used in two stroke snowmobile engines running WOT most of the time.