Topic: pre ignition trouble shoot question. 78 stock f3

[lostmykeys]

 I took about a 40 mile ride today it was about 85-90 degrees.
 I noticed the bike ping alittle when I would leave from a stop light it was hard to hear but I heard it.
 I am using 91 octane,new d8ea plugs,new filter in stock airbox,new oil and filter,points gap set at 14,valves and cam chain adjusted.
 I turned the points plate counterclockwise just  a hair to retard the timming and this made no difference.
 My points and condensers look brand new but I did notice a tiny spark on the 3-4 points very hard to see.
 Can lacquer thinner be used to clean points?I just used a small file and then ran a piece of business card trough them.

[scottly]

 I turned the points plate counterclockwise just  a hair to retard the timming and this made no difference.

To retard the timing, turn the points plate clockwise. Better yet, set the timing with a timing light.