BoatBanter.com - View Single Post

wrote:
I have an early 1980's modle 318 Chrysler engine installed in a
mudboat. About 2 years ago I developed a problem with the Ignition
coil burning up. The engine has the original electronic ignition
system installed, but has been completely rewired by a Dodge
dealership, the control module, ballast resistor, and the distributor
pick-up assy. have been replaced. However, I continue to have the
problem. The engine runs perfectly for about 3 months and then without
any warning, will backfire and die. There will be no ignition fire
until the coil is replace, then the engine will start up and run fine
for another few months. Any help or suggestions with this problem would
be GREATLY appreciated.

Thanks
Ronnie

2 years ago the coil might have just died of old age, we all will:-)
but then ......

The rewire ??? Hmmm check the ballast resister is actually in the
circuit when the engine is running, the coil is designed to run on 7-8
volts via the resistor, save when the starter is engaged the resistor is
supposed to be left out of the supply so the coil can get extra for
start or at least whatever is left over after the starter is fed.

If the rewirer goofed then the coil will start OK all the time of
course but once the engine is running the supply voltage won't be
getting cut back to 7 or 8 volts. Giving the coil 12 volts all the time
will kill it over time.

K