4.3l spark problem

antb

Recruit
Joined
Jul 14, 2009
Messages
4
need some help here bought boat 1989 regal 4.3l cracked block replaced
engine. having no spark only time i can get spark is when i first turn key switch or remote start button. it will spark just one time when cranking the spark goes away. replaced coil replaced dist. module replaced cap and rotor
plugs and wires. have 12v at both purple and gray wires at coil with key on and cranking also have 12v w/r wire coming out of dist. tried grounding w/g wire coming out of dist. to get spark still no spark. removed dash cluster replaced all connectors and wires for all switches and breakers still no spark
removed gray wire from back of tach. make sure tach was not bad causing
coil to ground out still no spark. im out of things to check i have worked on cars all my life but this boat is kicking my butt....please can someone help me.
 

fuzzybob

Petty Officer 1st Class
Joined
Oct 26, 2008
Messages
213
Re: 4.3l spark problem

antb, welcome to iboats. Looks like your post got lost in the shuffle. If you go to the top of the forum page and look in the "adults only" thread you should be able to download an oem merc manual for your engine... free! There's also lots of good info located there. If nothing else this should give you a bump back to the top and one of the pros may jump in with some ideas. Good luck
 
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