1999 mercury 90hp trouble please help

[badbird]

Ok I docked the boat and all was fine I go back to the boat today And turned the knob on the back of the tach because it is not accurate, stuck the key in and a steady alarm is going off and the engine will not start, please help. The engine is a 1999 mercury elpto 90hp


Ron

 

[badbird]

Re: 1999 mercury 90hp trouble please help

anyone

 

[badbird]

Re: 1999 mercury 90hp trouble please help

ok I went today and got the boat started, the horn is still sounding solid.. I tested a few things disconnected the water sensor and grounded to to engine and horn did not go off, checked purple wire at horn with all hooked back up and found 12.3 volts. now what else should I check that is all the tests I could find

thanks Ron

 

[bospa357]

Re: 1999 mercury 90hp trouble please help

Good luck. I couldn't any answers on my problems here either.

 

[scottsally]

Re: 1999 mercury 90hp trouble please help

do u pre mix your gas or is it injected?

 

[badbird]

Re: 1999 mercury 90hp trouble please help

do u pre mix your gas or is it injected?

oil injected and it is full, I had the beep beep beep thing before

 

[scottsally]

Re: 1999 mercury 90hp trouble please help

i had the same thing going on with my 150 after changing all the parts of the oil injection sys. mine turned out to be the gear on the crank that drives the oil pump. i would pull the pump and look at the end of the pump and down the hole with a light. just to see how it looks. they wanted 1500 to change that gear. i went to pre mix for 16 bucks.....and that was a stuped post by me...pre mix u would not have a alarm... how many hrs. do u think are on it

 

[scottsally]

Re: 1999 mercury 90hp trouble please help

i should say im just telling you what happin to me. i dont realy know if the 90 runs the same crapy gear that the 150 does. i spend a lot of $ and time trying to change parts to stop the alarm and save the oil injection. a lot of peps told me no way the gear is bad. yea right!! i have a box full of new oil parts . that if the day mercury can come up with a better gear i will have the gear changed. they want 1500 to put the same thing back in...for me pre mix is peace of mind and will never have a mercury oil alarm again!!!!!!!