Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 51,575
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
you don't need the cap and rotor on when you check with a test lamp. in fact.. it's easier to see the points open and close
without that on.
when points are closed, lamp is on.. when points are open, lamp should go out. if so, you know the points, condensor and insulator and copper strip are not shorted tot he dizzy housing.
it's normal to get a 3-5a draw on the ammeter when you turn the key on, or jump from bat - ( hot ), to the incoming side of the coil.
when you chck with a test lamp, disconnect the wire from the coil to the dizzy.. etc.
it's a pretty basic kettering ignition.
power to coil primary.. thru coil primary to points and condensor and then ground.. points closed, coil charges, points open, coil discharges, makes spark. condensor keeps points from burning and prevents arcing.. ats as a switch debouncer till points are far enough open that they won't arc.
if no spark with that.. check rotor cor cracks and that it fits tight.. and check cap for carbon tracking.. virtually HAS to work in those test contitions.. IE.. manually opening and closing points with an insulated tool.
many times there is an issue and points look closed but arent... ..
post back
soundguy
when points are closed, lamp is on.. when points are open, lamp should go out. if so, you know the points, condensor and insulator and copper strip are not shorted tot he dizzy housing.
it's normal to get a 3-5a draw on the ammeter when you turn the key on, or jump from bat - ( hot ), to the incoming side of the coil.
when you chck with a test lamp, disconnect the wire from the coil to the dizzy.. etc.
it's a pretty basic kettering ignition.
power to coil primary.. thru coil primary to points and condensor and then ground.. points closed, coil charges, points open, coil discharges, makes spark. condensor keeps points from burning and prevents arcing.. ats as a switch debouncer till points are far enough open that they won't arc.
if no spark with that.. check rotor cor cracks and that it fits tight.. and check cap for carbon tracking.. virtually HAS to work in those test contitions.. IE.. manually opening and closing points with an insulated tool.
many times there is an issue and points look closed but arent... ..
post back
soundguy