e3 spark plugs are they any good? I serviced a 19.5hp Briggs engine.I used an E3 spark plug. When the engine gets hot it doesn't want to run.

e3 spark plugs are they any good? I serviced a 19.5hp Briggs engine.I used an E3 spark plug. When the engine gets hot it doesn't want to run.

That depends on who you talk too. A well known builder I know and trust swears at them, and not by them.

Hi,
I have had little luck with them in these types of engines, and none in a two stroke.
Peace,
Clarke