Chumpion Spark Plugs

[Tim(NY)]

The B&S 6.5 hp motor with only about 10 hours on it in my leaf sucker suddenly would not start. After trying everything fuel related I replaced the Champion RC12YC with a used one from my drawer, and it lit right up. So obviously I need to go plug shopping. Is there a better choice than the Champ, and do you know what the plug number is?

 

[old]

The B&S 6.5 hp motor with only about 10 hours on it in my leaf sucker suddenly would not start. After trying everything fuel related I replaced the Champion RC12YC with a used one from my drawer, and it lit right up. So obviously I need to go plug shopping. Is there a better choice than the Champ, and do you know what the plug number is?

I use NGK plugs due to the champs and a few others being made in the land of almost right

 

[stdsch40]

NGK are the best.

 

[M-MAN]

I would put the Champion back in. They are fine on small engines.

 

[Mule Meat]

NGK 7599 CMR5H

 

[T.R.K.]

How long since it ran last? Here in NC most leaf suckers don't see much use from December to about September.
Lots of old stale fuel problems get blamed on champion plugs.

 

[chris142]

There's a lot of counterfeit plugs out there right now. Amazon and eBay are the top culprits but it's happened with Rock auto and even worldpac recently.

Make sure to buy plugs at a known vendor location like Napa or AutoZone.

I went through heck with some counterfeit autolites in my jeep last year. The ground electrodes melted off in 500 miles.

 

[buickanddeere]

Resistor plugs will have the internals fail . That is why non resistor plugs are used around here .

 

[Blackhole49]

The B&S 6.5 hp motor with only about 10 hours on it in my leaf sucker suddenly would not start. After trying everything fuel related I replaced the Champion RC12YC with a used one from my drawer, and it lit right up. So obviously I need to go plug shopping. Is there a better choice than the Champ, and do you know what the plug number is?

Did you try wire wheeling the plug and reinstalling before dis-guarding? I to prefer NKG. That being said, can't remember ever having a Champion fail except when the electrode was burnt off.

 

[Brian G. NY]

Did you try wire wheeling the plug and reinstalling before dis-guarding? I to prefer NKG. That being said, can't remember ever having a Champion fail except when the electrode was burnt off.

If you fill the plug with carb cleaner while holding it upside down and use a tip cleaner or similar stiff wire to scrape all of the carbon loose and then blow it our with compressed air you will get many more hours out of a fouled plug.
I leaned this back in the early days of snowmobiling before oil injection and modern 2-stroke oils.
I do this now and again with my chain saws too.
Small engine plugs rarely "wear out". Keeping them clean keeps them going.
I know.......a lot will say "just go out and but a new plug" but I'm not only old but I'm also "old school" and don't spend money (even small amounts) when there is no need to.
JMHO

 

[timcasbolt]

Another option for extending the life of a spark plug is to pick up an air powered spark plug cleaner.

 

[Don B.]

Nothing wrong with champion spark plugs. I rarely run anything else. Cats trucks, small engines. Been running them for years. I do occasionally get a bad one but hey they're cheap

 

[Phil B.]

While sometimes you could get a bad one, plugs are a lot of times blamed for or are fouled by a poorly tuned engine.

 

[Brian G. NY]

I would put the Champion back in. They are fine on small engines.

I agree, a little carb cleaner and a fine piece of wire will loosen all the carbon and a healthy blast of air will bring that plug right back into good working order.