QuestionI am getting this bike out of warm dry 32 year storage.
It had spark but it disappeared before I got to checking carbs etc. There is continuity from +12 volts thru primary to points.I suspect the capacitor--- ohmmter check shows infinity instantly. Maybe I zapped it while checking point gap etc.What is valid capacitor test? Coil secondary test??? Where can I get ignition parts etc for this bike ?
Thanks in advance for dealing with so many questions.
AnswerClarke, First, clean the contact faces thoroughly, set the gap to about .014" at the high spot on the point cam and then move the plate until the points open at the F mark alignment of the rotor and stator marker.
A quick condenser test is to just spin the motor over with the key on, with the starter motor makes it easier and watch the points open and close. If there is heavy arcing across the points every time they open/close then the condenser is bad or the connector to it is loose, disconnected.
Primary resistance should show up around 4-5ohms. Secondary across the two spark plug leads should read very low to nothing. Ignition points were made be several companies for Honda, so look for an ND stamp or sometimes a K (Nippon Denso or Kokusan). You have to match the points to the base plate of the same maker. Parts are on Ebay all the time, usually. Variations were used on 160 and 175s through the years.
Check the spark plug caps for resistance values. The originals were non-resistors and hard to find, so people put 5k ohm replacements which may cause the coils to struggle a bit. Use fresh spark plugs, both grounded to the cylinder head, when checking for spark. The spark loop goes from center electrode to ground on one side and reverses polarity on the opposite plug.
Bill Silver
