1996 7.4 Has Low Spark From Coil
#4
Charter Member
Charter Member
Not a good serial number you should have a zero and a letter before the numbers. Probably has Thunderbolt 4 or 5. Weak spark would probably be the coil, the module in the dist will either work or not and the amplifier usually doesn't cause weak spark. Are wires and plugs replaced?
#7
Charter Member
Charter Member
Didn't see the 0F, this engine has the Delco ignition, not Thunderbolt. These coils also go bad and there is a module inside the ignition that goes bad also. This is an automotive ignition and parts are available anywhere.
#8
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Join Date: Oct 2008
Location: Auburn, Michigan
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Merc part # for the coil is #898253T27 and they are $115.20 each and the module which I'm betting is the problem is #811637001 and cost is $133.25 and don't use automotive parts on a boat that's just asking for trouble.