#1
IP: 107.190.208.42
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Engine just quit, yep.
Engine just quit while running. Replaced points, condenser, coil, plug wires, plugs. Still no go. Ran a hot from solonid to coil positive and no spark. The neg from the coil to the distributor is fine. I noticed the wire from coil positive to alternator seemed melted at one point, I replaced it and it melted again. Unplugged wire from alternator and engine still turned over but no spark.
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#2
IP: 24.152.132.65
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Check for proper points gap. Sounds to me like the points may be closed all the time. If true, the new coil should not be trusted. Might be an alternator problem too. I'd leave the excite wire disconnected until this is sorted out.
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others Last edited by ndutton; 03-05-2017 at 10:45 PM. |
The Following User Says Thank You to ndutton For This Useful Post: | ||
Desmond (03-10-2017) |
#3
IP: 98.171.160.56
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Desmond
Welcome aboard. The ignition system has two parts: The boat's part and the engine's part. The first step is to be sure you are getting power to the coil. Turn the key on and take a voltage reading at coil +. Don't leave the coil powered up when the engine isn't running for more than minute or so or it will be fried. Did you file the new points? They may not be conducting. Be sure the points are properly gapped then: Disconnect the wire to the distributor from coil -. Inspect this wire to be sure it is not grounding where it enters the distributor. Close the points and take a a resistance reading from the end of this wire to the breaker plate in the distributor. S\B zero ohms. Then open the points and take the same resistance measurement. S\B an open circuit. Remove all the wires at coil+ as suggested except the wire from the key that brings power to the coil. Power up the coil and close the points. Pull the big wire out of the center of the distributor cap and hold it near the engine to ground. Flick the points open and let them snap closed. A 3/4 to 1 inch blue white arc is good. Put the wire back into the distributor cap. Pull a lead off a spark plug and put a screw driver in the boot and see if you can jump an arc to a spark plug(s) while you turn the engine with the starter. You now have spark. TRUE GRIT Edit: The melting wire sounds like something is grounded that shouldn't be. Take a resistance reading from the end of this wire to ground. Last edited by JOHN COOKSON; 03-06-2017 at 10:46 AM. |
The Following User Says Thank You to JOHN COOKSON For This Useful Post: | ||
Desmond (03-10-2017) |
#4
IP: 73.240.100.80
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It will be a month before I get back to the boat, I will give it a try.
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#5
IP: 50.163.158.204
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When the engine quits, follow ye procedure...
Is it getting gas? spark? compression? |
#6
IP: 73.240.100.80
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There is no spark, and what does the wire from the coil positive to the alternator do.
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#7
IP: 72.194.218.130
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Supplies electricity to the alternator field windings.
You could take this wire off coil + and run on just the battery until you get spark. As I recall you said this wire was melting the insulation. Maybe it is bleeding so much voltage that there is not enough left to fire the plugs. TRUE GRIT |
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