Re: OT: Outboard Motor Charging System.

Sounds like it's working as it should...

I found this rather quickly on Google...

http://www.tenkillermarine.com/boatparts/chrysforcetrouble.asp

sjm1

Battery CD Ignitions


A large portion of the problems with the battery CD units are caused by
low battery voltage and/or bad ground connections. Low voltage symptoms
are weak fire or weak erratic firing of cylinders. Warning: Battery
reversal will cause severe damage to the CD units and to the rectifier.
While the Chrysler/Force battery ignitions are similar to OMC's, care
must be taken with regards to the color codes of the wires. The
following list will assist you as a general guideline.


Red: +12V direct battery connection
Blue: +12V ignition switch
Gray: + Terminal of coil
White: OEM Tach
White/Black stripe: Points or preamp
Black: Engine ground

1) Check all battery and ground connections. Maximum battery voltage is
16v DC.
2) Check the voltage on the blue wire at the CD unit. If the voltage is
less than 9 1/2 volts during cranking, there is a problem in the
battery circuit. These units require at least 9 1/2 volts to fire
properly. Connect a jumper wire directly from the + battery terminal to
the CD and retest. Warning: If the motor starts with jumper wire
connected, you will be required to remove the jumper to kill the motor.
If motor starts with jumper connected, there is a problem with voltage
in blue wire. Repair as necessary.
3) Disconnect points/sensor wire. Strike the points/censor wire against
engine ground. The CD unit should fire every time. If the CD unit fails
to fire, check the ignition coil for cracks or poorly grounded
condition. A poorly grounded ignition coil can burn out a battery CD.
Connect a spark gap tester directly to the coil. If it doesnt fire,
replace the coil with any known good CD coil. If the CD unit still
fails to fire, it is normally bad.
4) Check the DVA voltage on the gray wire primary input wire to the
coil. Using a DVA meter, readings should be 200 volts or more.
Magnapower II CD Systems


Disconnect the white and blue kill wires from the CD and connect a DC
voltmeter between the kill wires and engine ground. Turn the ignition
switch on and off several times. AT NO TIME SHOULD YOU SEE THE BATTERY
VOLTAGE ON A KILL CIRCUIT.
Connect a spark gap tester to all ignition coils and test with the
spark plugs in and out.If the coils fire only with the plugs out, check
compression with all spark plugs removed. A blown head gasket on these
engines can cause a no fire problem if the plugs are installed. NOTE:
This is an unexplained situation, but experience has shown that it can
occur.
Check the DVA voltage on the T1 and T4 terminals using the Fluke meter
with the peak reading adapter (CDI #511-9773), or CD 77, by cranking
the engine over and stopping to read the voltage. You should read
between 170-270 volts.
If either T1 or T4 has a low reading, disconnect the trigger module
wires (white/blue and green/white) and retest. If the readings are now
correct, the trigger module is probably bad. If there is still a low
reading, use a set of jumpers and swap the green and white capacitor
leads. If the low reading stays on the same terminal, the CD is bad. If
it follows one lead of the capacitor, then the capacitor is bad.
Check to see if the ignition coils are wired properly. On a 2 cylinder
engine, #1 is connected as NEGATIVE ground and #2 is POSITIVE ground.
With a 4 cylinder, #1 and #2 are NEGATIVE ground and #3 and #4 are
POSITIVE ground.


FORCE/U.S. MARINE Alternator Driven Ignitions
For P/Ns:116-3301, 116-5301, 116-8301, 475301-1 (300-F475301-1), 653301
(300-F817974A1), 658301-2,685301-1 (300-F658301-2)

(NOTICE: Maintence-free batteries are not recommended for use with
these systems)

DVA readings should always be taken with everything connected.
Check for broken wires and terminals, especially inside the plastic
plug-in connectors. We recommend that you remove the pins from the
connectors and visually inspect them.,
Check the flywheel for broken or loose magnets.
Disconnect the kill wires from the CD and connect a DC voltmeter
between the kill wires and engine ground, turn the ignition switch on
and off several times. If, at any time, you see voltage appearng on the
meter, there is a problem in the harness or ignition switch. AT NO TIME
SHOULD YOU SEE BATTERY VOLTAGE ON A KILL CIRCUIT.
Visually inspect stator for burned or discolored areas. If found,
replace the stator.If the areas are on the battery charge windings, it
indicates a possible problem with the rectifier.
If no fire on any cylinder: Disconnect kill wire AT THE PACK. Check for
broken or bare wires on the unit, stator and trigger. Using the Fluke
meter with the CDI 511-9773 Peak Reading Adapter, or CD-77 and CDI
511-9770 Piercing Probes, measure DVA voltage of the stator between the
output wire sets. With everything connected, readings should be
approximately 180 volts or more. The OEM stator resistence between the
blue and yellow wires is 700-900 ohms. CDI/Rapair stators should read
300-500 ohms. Disconnect the rectifier. If the engine fires, replace
the rectifier.
No fire or intermittent on one cylinder: Check stator and trigger
resistence. Trigger wire sets read approximately 50 ohms between the
wire sets(DVA-5V or more), OEM stators read 700-900 ohms (DVA 180V or
more) from blue to yellow, while CDI/Rapair stators read 300-500 ohms.
If readings are good, disconnect kill wire from one pack. If the dead
cylinder starts firing, the problem is likely the blocking diode in the
other pack.
No fire on two cylinders: If two cylinders from the same CD unit will
not fire, the problem is usually in the stator. Test per 5 above.
Engine will not kill: Check kill circuit in the pack by using a jumper
wire connected to the kill wire coming out of the pack and shorting it
to ground. If this kills the pack, the kill circuit in the harness or
on the boat is bad, possibly the ignition switch.
Coils only fire with the spark plugs out: Check for dragging stator or
low battery causing slow cranking speed. DVA test stator and trigger.
High speed miss: Using the Fluke meter with the CDI 511-9773 peak
reading adapter (or CD-77) and CDI 511-9770 piercing probes, DVA check
stator voltage to each pack at high speed. If it exceeds 400 volts,
replace the pack. Disconnect the rectifier and retest. If the miss is
gone replace the rectifier.

.

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