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06-02-2020, 07:13 PM #1Junior Member
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2.5 Promax port side spark problem
I Have lost spark on all three cylinders on port side of engine....I also checked ohms on terminals both blue and red wires at both switch box's.... also switch wire's with white tracers to see if that worked (no spark) can anyone tell me how to further check switch boxes or could it be ECU.....Thank's
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06-03-2020, 03:45 AM #2
U can swap the boxes around and see if it moves to other side
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06-03-2020, 10:28 AM #3Junior Member
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06-03-2020, 01:23 PM #4Junior Member
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changed wires from one box to the other all wires on switch boxs
Changed wires from one box to the other, would not start at all...reverse back to original starts but runs starboard side only...Switch box bad ???????????
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06-08-2020, 01:33 PM #5
You need to switch boxes and check for spark,not try and start it. You may have 3 wet fowled plugs and that is why it would not run. Get a good spark checker or you can somehow make sure the plugs are in the boots and grounded to block, However be very careful to keep them away from in front of the spark plug holes or you could have a fire when fuel flys out of engine when cranking. First crank motor with key off,with plugs out, with a remote starter switch or jump the solenoid to crank with key off so it does NOT spark.
Last edited by perfmarine1; 06-08-2020 at 01:35 PM.
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