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Electronics-Stereo/GPS/Chartplotter/Electrical etc

Mercury sport jet XR 120 no spark on one cylinder

Thread starter Ajatruck
Start date Jul 4, 2020

Ajatruck

Member

Jul 4, 2020

Hi there everyone. I have a 97 Sea Ray sea rayder F-16 with a Mercury sport jet XR 120 I picked up last fall. I rebuilt the carburetors replace all fuel lines compression is excellent in all four cylinders but I don't have spark on cylinder number 3. But if I switch wires between two coils I get spark on cylinder 3 does anybody have any ideas the point me in the right direction. Thanks so much in advance

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