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Problems starting
I have a 66 f100 with a 352 in it, all stock(except for a few thing that don't relate to my problem). I had a spark plug that was not firing so I replaced all the plugs and plug wires. I use Bousch wires and Bousch plat. plugs. Now i don't get any spark from any of the plugs. When i replaced the wires and plug I did them one at a time so the firing order is still the same. What am i over looking or what could i have done to make this happen. Any ideas would be great since this is my primary transportation right now other than my motorcycle.
Thanks,
Jimmy
Thanks,
Jimmy
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Check for 12v on plus side of coil. See if 12v pulses on the negative of coil when engine cranks. If all is OK pull high voltage wire out of center of distributor and see if you have spark.
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[font size="1" color="#FF0000"]LAST EDITED ON 15-Jun-01 AT 00:07 AM (EST)[/font][p]Jimmy,
Dave is right, check the power feed first. Had a problem with my Econoline pickup once, Would go dead then be ok. Was the feed between the coil and distributer. Drove me crazy for a while.
You will find the problem and it will be relatively simple. Just go back to the basics. Let me know.
Jim
Dave is right, check the power feed first. Had a problem with my Econoline pickup once, Would go dead then be ok. Was the feed between the coil and distributer. Drove me crazy for a while.
You will find the problem and it will be relatively simple. Just go back to the basics. Let me know.
Jim
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you should not have 12 volts going to the coil if i remember right . the coil gets its power from the ignition switch. the wire coming from the switch is a resister wire. if the truck has points. if it was converted to electronic is should have 12 volts. i had an intermittant problem with my 65. it wiuld breakup at high rpm's and after changing from points to electronic and back again 2 times,and rebuilding the carb 3 times, twice by me and once professionally, i finally found the resister wire had multiple breaks in it. the part under the dash was cracked. i replaced that wire with standard wire (ie not resister wire) and that solved the problem, i figure when the wire heated up the connection broke. i fixed that a year ago and have not had a problem since.
matt
matt
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Right you are! Thanks for catching that. It should be in the neighborhood of 9 volts when running, but still should be 12 volts when cranking. The 12volts comes from the wire on the starter solenoid to give hotter spark for starting. The resistor or resistor wire keeps the coil from overheating.
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