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Name:	Samdog -	Reply
Subject:	Ignition problem Mariner 90
Date:	6/15/2009 9:27:32 AM

I tested the spark at all 3 coils. Only the top one sparks. I replaced the ignition coils with known good coils. Same result only the top one sparks. BUT, when I run the boat sometimes it runs well with all cylinders firing. Sometimes only one is working. Yesterday I ran it for over an hour with all three working. Later in the day I cranked it and some were missing. Since I have replace the ignition coils what do I check next?

Name:	Kizma Anuice -	Reply
Subject:	Ignition problem Mariner 90
Date:	6/15/2009 9:03:22 PM

triggers

Name:	Samdog -	Reply
Subject:	Ignition problem Mariner 90
Date:	6/15/2009 10:13:24 PM

Any chance it could be the switchbox? Trigger coil is hard for a novice to replace since you must remove the flywheel.

Name:	Samdog -	Reply
Subject:	Ignition problem Mariner 90
Date:	6/28/2009 10:17:19 PM

I replaced the switchbox and it runs as good as a 20 year old Mariner can run.

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