135 HP Mariner- 1997- intermittent beep

sullmate

Petty Officer 3rd Class
Joined
Dec 23, 2008
Messages
93
Update --A few weeks ago I posted an oil injection problem. My alarm was going off. I had a Merc mechanic check it out. He replaced all sensors and warning module. The intermittent beeping would not go away. He placed the original parts back, so it ONLY cost me 3 hours labor @ $80/ hr. The mechanic concluded that the plastic gear that turns the oiler impeller was skipping or one of the teeth was chipped, causing the beeping. He said it would be cost prohibitive to replace the plastic gear as it is inside the engine block and hard to get to. Does this analysis make sense ???
The mechanic disconnected the alarm so no more beeping and told me to mix 50:1 ratio oil to gas manually. I am concerned that the overheat alarm is also disconnected. When I turn the key to the on position, there is no indicator beeping at all.
Please advise.
thanks for all your help.
 

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: 135 HP Mariner- 1997- intermittent beep

It is very expensive to replace that gear. Test you heat alarm by turning the key on then ground the lead going to the heat sensor in the head. The alarm should sound.
 
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