merc 3.0 dies

dubb4611

Recruit
Joined
Jun 1, 2010
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2
I have a 1991 Searay 170 with merc 3.0...2nd owner bought few months back.all was great until this past wk end..she will start easy idle fine then cruise thru no wake throttle up to mid she'll plane fine just ehen u think all is fine I rpm up past 3000-4000..it dies like i turned the key off..the 1st day it happened it would fire back up but die at same rpm...i replaced coil,points, suppressor,wires plugs all but cap(not in stock)..took out yesterday it died sooner and wouldnt start back until we paddled back to ramp put on trlr then tryed it fired right up.when i replace the cap if that dont fix..where to go from here...?could it be a block vent.vapor lock?...any suggestions would help..thanks in advance
 
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