200 merc black max

[dmottjr]

i live in milford ct didnt no we were neighbors i work at new country lexus

[shellyisland]

I have a 175 Black Max that had same problem, water was flowing and everthing seemed ok. Buzzer would not stop though. Added second low water bypass hose...turned out to be freakin' thermo on back, replaced in 5 min
A "quick and dirty way?" Run her hard for a bit, then feel surface of heads. Should be really warm but not hot (can keep your hand on it.) Hope that helps...I'm not the expert here, so wait for confirmation...but it worked for me

[dmottjr]

thanks already did the stats they werent any in the motor put new stats in still an issue check water pressure today at 16 psi at 2000 rpm think that is ok i dont no what else to look for ???????????

[shellyisland]

Hmm...probably not issue at all, but replace water pump impeller if you haven't yet. They don't last very long on Mercs it seems...lifetime of OMC's, my first Merc. Also, give the flywheel a turn in the middle of winter...extends impeller life.
Before expensive suggestions, pull the stats back out and really clean port (electrical contact cleaner.) Water is fairly warm up there too..."lose" popit for diagnostic purposes. I just took mine out, but I'm a 'bit further south.
Just got back last week from sail out of Buzzard Bay. Kinda your area I think?
Guys on here will steer you right...Congrats on saving and enjoying a Hydro

[dmottjr]

thanks for the info

[dmottjr]

still haveing issues with hot buzzzer goin off new stats good water pressure can there be to much water pressure ?only goes off when im running it hard for a short distance can poppit valve do this pleassssssssssssse help with any other things i can check to make this go away goin crazzzzzy new to streams just need a little help thanks

[Rut311969]

Its not the stream its the Merc no just kidding you say at high speeds are you gettiing enough water pres when on the pad at higher rpm?

[dmottjr]

im takein out today with the gage on it to see what pressure is when on the pad ill let u no what happens thanks this is driveing me crazy ........

[transomstand]

i work at new country lexus

My condolences

What happened yesterday?

[dmottjr]

didnt get out there i ordered a good water pressure gage i think im loseing pressure when im on the pad good pressure at idle and at 2000 rpms i also ordered new temp gage i no mine is off . could that be it ??