Re: Timing and horn

Posted by Bob Carabbio on May 25, 1998 at 22:11:46

In Reply to: Timing and horn
posted by Scott Evans on May 25, 1998 at 10:08:23

FIRST:
remove the timing pin from the front housing of the engine, reverse it and while holding it in toward the timing gear tightly with one hand, turn the engine slowly with the crank.You should be able to feel the pin drop slightly into the timing depression in the gear. It's not a real obvious drop.Note which direction the rotor turn when the motor is rotating forward. if you can't find the depression see the post under "Botched timing" below.
Second:
Retard the spark all the way, make sure the distributer lever goes all the way in the body "Window".Loosen the cam screw in the center of the cam.Then move the cam BACKWARDS until the points just close, and the tip of the rotor points to the lead for #1 plug.Tighten the cam screw.
Third:
Make a mark on the crankshaft pulley. rig a pointer (I use coat hanger - but bailing wire is more historic) aligned with the mark on the pulley.Replace the timing pin.Turn on the ignition.position the coil wire close to the block (about 3/16" away).
Fourth:
Turn the engine with the crank One rotation, and see if the spark jumps at the angular position where the pointer, and the mark on the pulley coincide.If it doesn't, turn another rotation, and check again.If it's consistantly late, loosen the cam screw and move the rotor in the direction of rotation slightly and check again.If it's early, do the opposite.If it's inconsistant, the drive is questionable - worn gears, or drive tangs.
As far as the horn goes, the electrical resistance is very low.I'd suggest that the problem is more likely related to the horn button, and it's wiring, or the contact at the end of the column in the light switch.pull the rear housing off the horn, and apply the voltmeter to the terminal that goes to the horn button.It should show 6 volts.have somebody push the horn button - the voltage should drop close to zero.if it doesn't some portion of the button system is defective.
Bob Carabbio

E-Mail Comment to Webmaster