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Thanks for the answer.

Thanks for the answer.

2003 Mercury 175 Optimax OT749600
Looking at replacing the oil reservoir on the engine. I have a bad sensor.
Do you really need to flash the computer? Why?

That's the way mine is, just used to the old ones I guess.

Thanks, I have been kinda scared to use it.

I have a 2003 175 Optimax ser# OT749600
My question is how much smoke should I be seeing while at idle? My old 35 hp smokes a lot, but I don't see any smoke from the 175.

I had the same problem on my 175 Optimax, removed the fuel filter it had water in it. dumped it out and re installed. The beeps stopped.

I just installed a water pressure gauge. At idle I have around 2 psi and shortly after start up I get two beeps? Everything appears good, good water from the pee stream. Should I be concerned? If I...

2003 Mercury Optimax 175 ser#OT749600
Where do I install the brass nipple on the motor for my pressure gauge?
Pictures would be awesome, first time boat owner
Thanks Ken

I will check it out, thanks.

Well, I dont see any small gray hoses, I have looked all over the internet for any pics but cant find any. If I send you some pics of my engine do you think you can help?

Thank you for the response, when it stops raining I will check it out.

2003 Mercury Optimax 175 ser#OT749600
Where do I install the brass nipple on the motor for my pressure gauge?
Pictures would be awesome, first time boat owner
Thanks Ken:nanner:

Thank you

I have a 2003 175 Optimax. What fuel should I run in it?