2017 175 opti pro xs
1175p73ey
2b362257
Just changed it my plugs and they looked pretty ugly. Is there anything abnormal I need to worry about or is this normal and they just needed changed. They were not properly gapped. Seemed to be gapped at .030 like they come out of the box.
pretty normal , you idle alot???
.................................................. ...the scariest thing in life is the unknown ...................................
Sure looks like they saw a lot of idle or low rpm time.
_______
Phil
'09 Hewescraft ProV
'09 150 Optimax
Not much idle. Usually just run hard and shut down and fish. But I've only put 50 hours of the 478 it's got.
Bet the next set will look better since you'll gap correctly.
_______
Phil
'09 Hewescraft ProV
'09 150 Optimax
Well I've been out a few times since the plug change and I've seem to have lost some top end. I'm hitting 62 @ 5600 rpm when I used to see 65 solo and a half a tank of fuel and fishing tackle and 67 when I'm real light. I also changed the fuel/water separating filter on the engine, air filter, and separator filter on the boat before the engine. Boat is a 206 Storm bass boat. It feels to be running and idling smooth though..... Is it a good idea to just get the injectors done? I'm not sure if they have ever been serviced. I'm not the original owner of the engine.
Before you start tearing into things:
1. What season and temps was it when you ran 65 solo? Temperature and humidity can reduce engine output by as much as 14% at the propshaft.
2. What season is your FUEL from? Fuel blends change (intentionally) from season to season, and fuel from as little as 2 weeks ago may not be particularly well suited to today's needs.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Wow, didn't realize temp and humidity could affect performance that much. As far as fuel blend, I add fuel probably every other trip out so maybe both could just be causing this which puts my mind at ease. I'll take note of performance when it gets cooler and dryer out. I'm sure being in south Florida with temps and humidity recently sky rocketing in the last couple months my performance is affected. Maybe having a prop a pitch down for summer and tournament loads is good idea to lighten the load on the engine as well.
Thank you again Don.
+1 on a summer-months (1 pitch lower) prop.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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