Check Engine Light and Warning sound at WOT

[CTFSHWHISKER]

Found this on another site but may help ya out. Mine is a Merc but had a float switch in the oil reserve tank get saturated and caused the alarm to sound. Good Luck.
There are a couple of situations dealing with the oil system that will give a continuous alarm. If the oil warning module (small black box below starter on right side of engine with 5 wires coming out of it) is bad it will give a continuous alarm or if the oil level float switch inside the oil tank is stuck or bad it will give a continuous alarm. Also the temp sending unit wire (located on the back of engine by the sparkplugs) goes to the oil warning module. If the temp sending unit is bad or the wire (tan w/lt. blue ) is shorted to ground somewhere it will give a continuous alarm. You can remove the tan/light blue wire coming from temp sending unit to the oil warning module, if the alarm stops it's probably a bad temp sending unit if it continues unplug the light blue wires going to the oil sending switch in the oil tank, if the alarm stops you have found the problem. If after unpluging the temp sending unit and the oil sending switch and the alarm still continues it is probably a bad oil warning module.

on the system check the check engine light is for fuel restriction,nothing to do with oil,or heat,they light up independantly,first place to start is with a remote tank and run it,to eliminate the anti siphon valve on the fuel tank,THEN move to the motor if it still alrams,the system is activated by a vacuum switch,little round white piece with 2 wires going to it.should be by the fuel\oil pump.it could be bad.make sure primer bulb is good too,if they fall apart inside it can cause this alram too,suucks up the pieces and blocks flow.

[know1]

I appreciate all of the replies and help.

Looks like I'll start with an alternate tank and see about the anti-syphon valve. In addition, I'm going to replace the fuel filter while we're in there.

[Basswipe]

I had the same problem on a MERC. Turns out it was the oil injection system getting weak. It would supply proper oil at lower RPMs, but couldn't keep up at high RPM.

Had a friend with a Stratos and OMC motor that was doing the same thing as yours, and he basically ignored it because it had plenty of oil in it. He cut the wire to the warning beeper. It blew up at WOT, and I mean blew up. It looked like a hand grenade went off under the cowling.

[smee]

I appreciate all of the replies and help.

Looks like I'll start with an alternate tank and see about the anti-syphon valve. In addition, I'm going to replace the fuel filter while we're in there.

B - Break
O - Out
A - Another
T - Thousand $

[know1]

B - Break
O - Out
A - Another
T - Thousand $

Thanks for your help

[know1]

Thanks for all the replies.

Replaced the fuel filter and the fuel lines and it's running like a champ now.