I got my 200 rebuilt and spinning, but does not fire. There is power from the switch to the coil but no spark. Question: to which side of the coil should the ignition wire connect, + or - with a positive ground? The points, condenser, etc have been completely replaced with new. Could it be the old coil?
- Thread starter LMack
- Start date
old
Well-known Member
- Location
- Camdenton Missouri
+ ground + goes to the distributor. Which ever ground you have that is also always the side of the coil that goes to the distributor. Now as for no spark take the cap off the rotor off and dust cover off. With the switch on open and close the points by hand, you should see a spark when you open them and here a pop sound. No spark at the points then you will have no spark at the plugs. New points can in fact be dirty and need to be cleaned at times
Hobby farm
Hobby farm
Janicholson
Well-known Member
A pretty common problem is to have the connection for the points grounded at the pass through. THe little nut is a pain, and if things touch the case, it will not run. Open the points and put a corner of a dollar bill in the gap. Let it close on the Dollar. Turn on the ignition and check for voltage at the outside of the distributor. If you have voltage, the connector is OK. If you dont, the points are shorted to ground. JimN
I will try this also. It did do Old's suggestion and there was no spark at the point gap. It may be next week before I can do any more since I have given up for today and put up my tools. If this one is shorted out it will be the first of many for me. Since the coil is so old and may be the original I am afraid it could be the culprit. If I disconect the coil from the distributor and check for power on the + terminal of the coil with the switch on will that tell me if the coil is bad?
Janicholson
Well-known Member
If you take the wire off of the distributor side of the coil, put a jumper lead on it, put a condenser on the other end of the jumper with its case grounded to the block (maybe another jumper), then touch the connection with the condenser lead in it to the ground and then pull it away, you will mimic a set of points. If the coil fires, it is fine. If it does not it may be bad. JimN
I was able to check to see if the points were shorted using a dollar bill. (I was certainly afraid of burning the thing up and I don't have any to spare.) The points were not shorted. I again checked the points using Old's suggestion and this time there was a definite spark at the points. So the points are not shorted and the points do spark when broken. I believe that leaves a bad coil. I will check this with a timing light next week. I'll post the results. Thanks for your help guys. LMack
Janicholson
Well-known Member
If they spark, pull the coil wire from the center tower of the cap, and place it's free end 1/4" away from the block and crank it. Spark (nice and blue) good coil. No spark, bad. JimN
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