changed spark plugs in stock 36 engine
 

and i get a sparking sound when engine is running, and you can see a small spark at the top of the plug, only 4 of the new plugs do this, i was hoping some one could shed some light on this, than you, bob

Re: changed spark plugs in stock 36 engine
 

Is the wire pushed firmly down on the plug?

Re: changed spark plugs in stock 36 engine
 

Ive had good luck with champ D-21's for going on 20 yrs. Maybe you have old or cheap wires that are leaking to ground. ken ct. Also in a 36

Re: changed spark plugs in stock 36 engine
 

If you have carbon radio resistor type wires this happens when they get old and break down. Start your engine in the dark and see if you can see sparking along the plug and coil wires.