85hp force outboard no fire

L

lockdoc1093

Recruit
Joined
Jul 18, 2014
Messages
5
The motor turns over but it doesn't get no spark to start. All spark plugs are good as well as the wires What else can I check to see why its not getting spark? 85 force outboard. TIA
 
J

Jiggz

Captain
Joined
Oct 23, 2009
Messages
3,909
What year is the motor? Anyways, try to make sure the kill switch or lanyard switch is not activated. If it is not, try disconnecting the white wire from the engine cowl terminal board (one that is connected to the CD modules or power packs) and try again. If it starts, it tells you the white wire is getting grounded somewhere.
 
SkiDad

SkiDad

Lieutenant Commander
Joined
Jul 18, 2010
Messages
1,518
if what Jiggz says doesn't help try looking at your stator - you can test the wires without taking flywheel off- look at http://www.outboardignition.com/forcesearch.asp?cat=itemname&cval=3&hval=30&val=8 the 1986 is a white engine - looks like there might be several 1986 types - check the last digit of your engine model.

I had to replace my stator a few years ago and this helped me decide it was bad b/c it failed the test of proper Ohms. if you do replace it make sure you torque the flywheel nut to the proper 90 foot lbs.
 
jerryjerry05

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,183

  1. 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.
  2. Check the flywheel for a broken or loose magnet.
  3. 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 appearing 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.
  4. Visually inspect stator for burned or discolored areas. If found, replace the stator. If the areas are on the battery charge windings, it indicated a possible problem with the rectifier.
IF NO FIRE ON ANY CYLINDER:
  1. Disconnect kill wire AT THE PACK.
  2. Check for broken or bare wires on the unit, stator and trigger.
  3. Measure DVA voltage of the stator between the output wire sets. With everything connected, readings should be approximately 180 volts or more. Resistance readings between the stator wire sets range from 680 - 800 ohms.
  4. Disconnect the rectifier. If the engine fires, replace the rectifier.
NO FIRE OR INTERMITTENT ON ONE CYLINDER:
  1. Check stator and trigger resistance, trigger wire sets read approximately 50 ohms between the wire sets (DVA-5V or more), stator reads 680-800 ohms, DVA 180V or more from blue to yellow.
  2. 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 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 starter or low battery causing slow cranking speed. DVA test stator and trigger.
HIGH SPEED MISS:
  1. DVA check stator voltage to each pack at high speed. If it exceeds 400 volts, replace the pack.
  2. Disconnect the rectifier. If the engine fires smoothly, replace the rectifier.
Two Cylinder Engines with Combination CD Module with Built-in Ignition Coils
(1984-1988)
NO FIRE OR INTERMITTENT ON ONE CYLINDER:
  1. Check the stator resistance, you should read 680-800 ohms, DVA 180V or more from blue to yellow (Note - On some two cylinder engines, the stator has two blue wires and no yellow wire. The stator will read from blue to blue). All stator wires should read open to engine ground.
  2. Check the trigger resistance, trigger wire sets read approximately 50 ohms between the wire sets (DVA-5V or more), and open to engine ground.
  3. 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
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, or possibly the ignition switch.
  • Prestolite ADI Ignitions 1984-1992 (Continued)
    Two Cylinder Engines Using Separate Switch Boxes and Ignition Coils

    1. 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 appearing 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.
    2. Check the flywheel for a broken or loose magnet.
    3. 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.
    4. Visually inspect stator for burned or discolored areas. If found, replace the stator. If the areas are on the battery charge windings, it indicated a possible problem with the rectifier.
    IF NO FIRE ON EITHER CYLINDER:
    1. Disconnect all kill wires AT THE PACK.
    2. Check for broken or bare wires on the unit, stator and trigger.
    3. Measure DVA voltage of the stator between the output wire sets. With everything connected, reading s should be approximately 180 volts or more. Resistance readings between the stator wire sets range from 680 - 800 ohms.
    4. Disconnect the rectifier. If the engine fires, replace the rectifier.
    NO FIRE OR INTERMITTENT ON ONE CYLINDER:
    1. Check the stator resistance, you should read 680-800 ohms, DVA 180V or more from blue to yellow (Note - On some two cylinder engines, the stator has Iwo blue wires and no yellow wire. The stator will read from blue to blue). All stator wires should read open to engine ground.
    2. Check the trigger resistance, trigger wire sets read approximately 50 ohms between the wire sets (DVA-5V or more), and open to engine ground.
    3. 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.
    ENGINE WILL NOT KILL:
    • Check the kill circuit in the pack by using a juniper wire connected to the white kill wire coming out of the pack and shorting it to ground. If this kills all fire from the pack, the kill circuit in the harness or on the boat is bad, or possibly the ignition switch.
    COILS ONLY FIRE WITH THE SPARK PLUGS OUT:
    • Check for dragging starter or low battery causing slow cranking speed. DVA test stator and trigger.
    HIGH SPEED MISS:
    1. DVA check stator voltage to each pack at high speed. If it exceeds 400 volts, replace the pack.
    2. Disconnect the rectifier. If the engine fires, replace the rectifier.
    3. 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.
    4. Check the flywheel for a broken or loose magnet.
    5. 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 appearing 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.
    6. Visually inspect stator for burned or discolored areas. If found, replace the stator. If the areas are on the battery charge windings, it indicated a possible problem with the rectifier.
    Three and Four Cylinder Engines Using Separate Switch Boxes and Ignition Coils
    IF NO FIRE ON ANY CYLINDER:
    1. Disconnect kill wire AT THE PACK.
    2. Check for broken or bare wires on the unit, stator and trigger.
    3. Measure DVA voltage of the stator between the output wire sets. With everything connected, reading s should be approximately 180 volts or more. Resistance readings between the stator wire sets range from 680 - 800 ohms.
    4. Disconnect the rectifier. If the engine fires, replace the rectifier.
    Three and Four Cylinder Engines Using Separate Switch Boxes and Ignition Coils (Continued)
    NO FIRE OR INTERMITTENT ON ONE CYLINDER:
    1. Check stator and trigger resistance, trigger wire sets read approximately 50 ohms between the wire sets (DVA-4V or more), stator reads 680-800 ohms (factory) and 200- 300 (CDI/RAPAIR) DVA 180V or more from blue to yellow.
    2. 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 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 starter or low battery causing slow cranking speed. DVA test stator and trigger.
    HIGH SPEED MISS:
    1. DVA check stator voltage to each pack at high speed. If it exceeds 400 volts, replace the pack.
    2. Disconnect the rectifier. If the engine fires, replace the recfifier.
Page 5 - Index - Page 7
 
MickLovin

MickLovin

Master Chief Petty Officer
Joined
Feb 18, 2013
Messages
822
Well Jerry jerry you aren't leaving anything out there :p
 
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