2011 merc proxs with 2014 power head model#1B974945 wot 5200 rpm 25 fury not a prop problem. Had sleeves checked, they are ok. runs good but cant get over 5200 any expert advice would be appreciated
2011 merc proxs with 2014 power head model#1B974945 wot 5200 rpm 25 fury not a prop problem. Had sleeves checked, they are ok. runs good but cant get over 5200 any expert advice would be appreciated
Was the 14 tuner used with the powerhead?
04 521VX 250 Pro XS
14 521C 250 Pro XS
Not sure. Why?
Anybody check to see if you're, in fact, achieving Wide Open Throttle?
That was simply a rotating assembly (powerhead)- so there would not have been any need or reason to change the exhaust tuner.
Start with the BASICS:
-Compression Test
-Spark Test
-Fuel Quality, Delivery, and Air/Fuel Pressure Tests
-Record fuel and air pressures at idle, under acceleration, and 5/10/15 seconds after shutdown
-Verify engine reaching WOT at linkage
-Test tensioner spring with INCH lbs torque wrench. Set at 70 lbs/in, it should click before reaching end of travel (if not, REPLACE SPRING AND BELT)
-Inspect Reeds
-Inspect exhaust tuner and powerhead gaskets (rough view with bore scope with gearcase removed)
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
ill have him check all of that and get back. Thanks
checked tuner and gaskets, all ok tech found 1 bad fuel injector and compressor had over 1000 hrs on it so im changing that out. crossing my fingers
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