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Author Topic:   Need help! 15hp on 11'
Erik posted 06-25-2001 12:52 AM ET (US)   Profile for Erik  
I have this 15hp mercury on a 11' standard and it dies on idle, runs moderate in high speeds, refuses to start with out starting fluid-spray. What could be the problem...or problems? Anyone had similary problem? Please Help!-thanks
Clark Roberts posted 06-25-2001 05:17 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Erik, this is an easy one since you say it won't start without starting fluid and dies at idle... the low speed carb jet is stopped up and you need to simply remove carb, clean with carb cleaner and reinstall... very simple carb but it has a primer/injector instead of a choke plate and the plastic linkages and idle/prime knob must be removed with great care... a shop manual will discribe but someone to advise (someone whose done it) is best! Once you've done it the mystery is gone.. Clark.. The Old Man and the Sea
Bigshot posted 06-25-2001 11:24 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Ditto! Carb hsa to be rebuilt. Do NOT use starting fluids on 2 strokes, strips oil from crank bearings, very bad!
Clark Roberts posted 06-25-2001 02:36 PM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Hot start also will start a "hot" fire and it burns with an almost invisible flame similar to alcohol... by the time you notice it the engine is on fire! I know from personal experience (dumb me) but caught it in time... now I always put fire extinguisher beside my tools when doing any work on an outboard that involves cranking over! I can still smell the stink from the almost disasterous event long ago.. Happy Whalin'... Clark.. Spruce Creek Navy
Erik posted 06-25-2001 05:03 PM ET (US)     Profile for Erik    
Well, I have a rebuild kit for the carb and a gasket kit for the came with it when i bought the engine second hand. Also I sprayed quite a bit of engine tuner in the carb and a friend said i should use old plugs when doing that cause the engine tuner will foul them up even after you clean them so i think ill change the plugs and rebuild the carb. Well thanks Clark and Bigshot...i'll post my results for reference.
Steve Leone posted 06-26-2001 07:46 PM ET (US)     Profile for Steve Leone  Send Email to Steve Leone     
What year is the Merc? Steve.
Erik posted 06-26-2001 11:11 PM ET (US)     Profile for Erik    
I have no idea of the exact year of the engine but i think it between '92-'94. If anyone knows how i can find out through the serial number or whatever that would be great. The serial number is OC142727. It has all the features of the newer engines but the cowl is a diffrent design.-Erik

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