No spark Our Farmall M has spark from Coil wire to Distrubutor but no spark from Distrubutor. Have all new parts.

Have you lost the chip out of the ignition key ,failing which please post make model and year as this might help me to give a answer

Check whether the COIL WORKS, and also CHECK or replace the CAPACITOR next to the coil----it's cheap.

The coil wires may be inter changed or the one coil might not be friing. the intake cam in the most senseitive so if one coil is'nt firingyou can switch the coils as they are the same part and put it in the other coil wire and the other set of primary wires and put it all back together If it now fires on the exhaust side the coil is bad and just but a new coil if it still only runs on the same side you may be having troble with the distrubuter pickup. If you are a reman distrubutor from an auto parts store is the way to go as they have a warrentee to be good and the common man has the skill or the tolls to rebuild the distrubutor with a new pickup.

There's a fuse for the igntion, if it's blown it would cut power to the coil, check to see if the coil is firing by putting the coil wire [ make sure the ciol wire is good, they are known to fail ] close to a grounded part of the car. if it's working, then it may be a bad rotor, if not it may be the coil.


It would be good to list what the vehicle is.

to test whats wrong you need a test light 12 volt. It's an ice pick like tool with a clear handle and a ware with an alligater clip. hook the clip to ground near the ciol then with the key on the ciols small wires will be hot ( lights the light ) unplug the small wire plug at the coil and one wire will be hot the other cold. the one thats cold connect the test light and reconnect to the coil. crank the engine before cranking with the key on it should be lit cranking it should flash off and on quickly. All of this presoposes that the battery is well charged and cranks the engine good. if it just stays on then you need to verify that the distrubutor is turning, ( cap off look it it with it cranking it should turn if not the timing chain whent out. no flash and the distrbutor turns the crank senser 9 DISTUBUTOR PICKUP OR THE INGTION MODULE failed any of the wires can break too. Most auto parts stores can test the module before you buy a new one. module failure is common well motor no start. the pickup is not as common and if your not a regular mechanic then changing the distrubutor is easier. make sure that you put the new one in the same as the old one or it won't run. turn the engine till the rotor points straight to somewhere (front) pull the old on watching it turn as it comes out so you can turn the new one in at the same place put the cap back on and fire it up. The rebuilt distrubutor will have a new pickup and module. The coil can fail but not like a light switch. if the the ciol has power and the other side flases and theres no spark the coil is bad.

Depends on if it a 1.9 or a 1.8. The 1.9 is simple, follow the coil wire coming out of the distrubuter thats not going to a spark plug and remove the wire from the coil the electrical connerter that has two small wires and the bolts that hold the bracket to the cylinder head. on the work bench saparate the bracket from the coil and put it on the new coil then bolt it on the engine then plug in the wires and go. The 1.8 is the Mazda derived motor and the coil is inside the distrubuter heald on with 2 bolts and nuts and 2 bolted on wire connections. Be careful as the parts are expensive and seldom fail so the parts store may have to sell you the whole expensive distrubutor to get it going. Coils selodom fail. You did'nt ask what to do if you don't have spark. the coil is unlikly to be the cause on an engine that ran OK last time you drove it. Timing belt breaking and the cam and dist. not turning, are real common.

check for sprak take one plug and put one of the wires on the plug, lay it on the block. make sure its on metal. turn over you shpuld see spark if not take cap off and look at the points use a small screewdriver and slide in between the points key on should see spark if not its the coil

bad advise from shop get your money back

most likely its your pickup inside the distributor.