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1988 merc crusier 305 5.0 stern drive 2 barrel carb

igrowedupaz

New member
I need somebody to direct me on how to check the ECM or the spark control module. I've been told two different ways and one way it shows bad the other way it shows good if the expensive module and is there another way of eliminating that module and going to a HEI distributor or something because the boat was fine I changed the carburetor and now it's not getting no spark so if somebody could help me out appreciate it... And also the part in the distributor is that supposed to have resistance or no mo
 
An '88 should have the ThunderBolt-IV system...the factory tests are the best and they have been posted here many times - try the search function...

There is no way to eliminate that module....other than changing the ignition system...
 
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