Purchased a 69Z-has not been cranked in at least 12 years... Motor turns but not firing. Pulled plug and watched as somebody turned motor and no spark on plug. Changed coil. No fire. Next step I assume is inside distributor? What direction do I take? Thanks
I can almost guarantee it is the points. Sitting that long the points get oxidized and corroded. With Key in off position, Remove distributor cap, 2 push down releases, take off rotor (2 screws) exposing points below. Take a small file (nail file will work) and put it between the contacts (apply a little pressure by pushing on the movable arm with your finger or screw driver) . Now, many manuals say NOT to file points, but they are not dealing with old, sitting idle stuff, so ignore that advice. After you file points, bump starter to close gap. Run (drag) a business card through the contacts a few times. This insures they are clean with no residue. Turn key on and crank engine watching for a spark jumping across points and looking for contact movement in and out. You may not see a visible spark easily, but with contact closed (key in on or run position)you can take a screw dr. and gently pry the contact arm and you should see a spark. Put everything back together and crank checking for spark at plug. A cheap inline spark tester from harbor freight is good for this task. To check point gap is adequate, bump starter till points are in open position. Use a matchbook cover and set gap to cover thickness. A young fella may not have access to a dwell meter and this is a farmer's way and darn close.
Although I would go ahead and get a meter.. I cant tell you how many times I have used this little thing.http://www.amazon.com/Actron-CP7605-Tachometer-Voltmeter-Analyzer/dp/B00062YUUS