what is the right spark plug

[svo58]

what is the the right spark plug for my big red 84 200es.One book says DR8ES,one said DR7ES and one said DR8ESL,what one should i use,or there is no difference.I was useing DR8ES,they fouled out fast.what plug do you guys use with your 84 B.R. thanks

[trikerider2oo7]

i am running a DR8ES in mine...seems to work fine...check you air/fuel mixture

[broook]

what is the the right spark plug for my big red 84 200es.One book says DR8ES,one said DR7ES and one said DR8ESL,what one should i use,or there is no difference.I was useing DR8ES,they fouled out fast.what plug do you guys use with your 84 B.R. thanks


It should use the DR8ES if everything is running right.

The DR7ES is one grade hotter and the (L) denotes a half grade between.

Try the DR7ES but it sounds like you could need new valve seals or rings if it is fouling the 8ES.