Reed valves, gaskets, etc

[basstron11]

OG883468 serial num

this is for a 1999 merc 175 efi

having issues with motor bogging down when trailering or when taking off to get on plane. Every once in a while it will miss when on plane but generally I have a full bank of power once on plane.

I did have two head gaskets replaced recently. That seemed to help initially and the motor is idling a lot betrrr now but seems to idle a little fast

could it be my fuel mixture?
eeed valves?
other gaskets?

I want to try to DIY this project to save $$ so I can get back in the water. Overall it runs great but I a long run worries me a bit.

any suggestions are helpful and appreciated.

[revlimiter]

Do a full link n synch procedure first to verify everything is where it should be. Check your sensors by the book, easy to do. Once you know everything's setup right then you can troubleshoot.

[JOE54]

+1^^^^^^^ EVERYTHING , full trigger movement/ timming advance, fuel psi , what boat what prop and pitch

[basstron11]

+1^^^^^^^ EVERYTHING , full trigger movement/ timming advance, fuel psi , what boat what prop and pitch

its on a 1999 ranger r81 sport. I’ll check prop but think it’s a 25 3blade quicksilver

I’m probably over my head with this. I don’t have any testers or programmers to see current levels.

super hard to find a mechanic that will test everything all at once and just fix instead of just patching here and there.

[JOE54]

^^^^^^^^ i understand completely,,,,, pull fuel filter off dump it in jar look for brown particles report back possible fuel line degraded restricting fuel flow to vst

[basstron11]

Thank you...I will check that out.....any ideas what would increase pee stream velocity? I replace foot oil and water pump yearly, but it takes this motor a long time to start peeing and its not a super strong stream, but I don't know maybe thats ok??

[leonreno]

The pee stream comes from the thermostats, so no pee until they open at around 143 degrees, depending on water temp can take up to a few minutes. You can check the thermostats to make sure they are no clogged up too. If your water pump/impeller hasn’t been changed in the last year, would be worth doing.

[basstron11]

Oh wow...this is great to know.....yes had it changed in january....that makes sense....water temp here is around 60s

[ChrisCarsonMarine]

We have reeds and stuffers,gaskets for your motor...the metal reeds chip and break often,it's a good idea to change to composite.Also,check your fuel pressure at idle,should be 36=39 lbs,if the regulator screen gets dirty it will raise injector pressure at idle and lower power,call if you need help,Chris

[basstron11]

Thank you....that is great info....