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Help please 1997 120 force

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Vincent70

New member
I have a 1997 force ran fine until recently, losing power in 2 and 4,did a compression check and 160 on all cylinders, before I go through and replace somthing that doesn't need to be replaced can someone please shed some light on what the problem is, thanks.
 
Spray a fuel/oil mixture into carb. that feeds those cylinders to see if it's fuel related, How did you ascertain 2+4 are not providing power? Have you pulled all plugs and inspected them? While running have you pulled spark plug wires one at a time,"Cylinder drop test" to see if rpms drop out? A timing light can also pinpoint an ignition issue. Place the light on all plug wires and look for an erratic pattern in light flashes>
 
Motor runs but barely pulled the 1 motor cuts off, pull two no change, three cuts off,four no change maybe stater bad not giving fire to two and four?
 
Motor runs but barely pulled the 1 motor cuts off, pull two no change, three cuts off,four no change maybe stater bad not giving fire to two and four?
 
Outboardignitiondotcom
They have test procedures for your electronic system.
An analog meter works best for the basic tests.
A special meter or an attachment for your meter for the more intricate tests is needed.

You have any fuel coming from the front of the carbs?

Move the coils around and see if the spark follows the coil?
The connectors on your motor can short out and stop firing.
Check the connections and inspect the regulator for burned/black spots?
 
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