Oil injection - Keep or Remove

[dtherrien]

I have a 97 merc 150efi. the motor runs excellent.I have asked before about the reliability of the oil injection system before and most say it is a good system.I check the warning system and oil lines all the time.Most of my worry is that i have a hard time hearing the tone that the horn makes.When i turn the key on i have to stick my head under the dash to hear the test beeps.so i would never hear the beeps running on the water.Would this be a smart move to disable it or am i worring for nothing.If i do remove it can i buy a dummy pump? Then disconnect all lines,plug holes and remove cap and moyion sensors?<br />thanks again for any help!<br />David

 

[KCLOST]

Re: Oil injection - Keep or Remove

Yes, Yes, and Yes....<br /><br />But I would recommend sticking with it if you know it is operational (original design leads to best performance).... Dealing with the warning horn should be easy fix... I've heard of guys hooking up warning lights, as well as moving the horn to a better location, or a louder horn...<br /><br />Might be worth a look...

 

[Moody Blue]

Re: Oil injection - Keep or Remove

My approach has and always will be - if it aint broke, don't fix it. Sounds like you are on top of the preventative maintenance so I would leave it as it was designed to operate.<br /><br />The warning light on the dash is a great idea. WHen the buzzer goes off all that is happening is 12V is applied to the buzzer to make it sound. Why not install a 12V dash light in addition to the buzzer.

 

[Coolmaker]

Re: Oil injection - Keep or Remove

I have had several of these engines (v-6's) through the years and never had an oil injection fail. The ones I have seen fail were due to sitting up for a long time and the oil pump shaft got rusty. They were not "pickled" when they were allowed to sit for a long period of time. Maybe I am a stickler for this, but I start and run my engines every month for at least 15 minutes. It allows for proper lubrication and dries out all the electrical parts. I have never needed to clean carbs either, unless I got water in the fuel...

 

[Kenny Bush]

Re: Oil injection - Keep or Remove

I would leave it alone if working OK. Those oil systems of late are the best Merc has designed. You definately need to move the horn to a more audible location, and indicator lights are good too. Don't forget that your overtemp is on the same horn too. CoolMaker is right about the "once a month" scenario's. I make sure that my engines get oil run through them on a monthly basis.

 

[dtherrien]

Re: Oil injection - Keep or Remove

Thanks for the replies.<br />I think i might be able to move the warning horn over by the cig. lighter and angle it up towards me.For the warning light...would a marina have one? and can i just splice into the horn wiring? I do a pretty thurough job of winterizing....do you think it would be good practice to run motor in the winter in the north east...mid winter in central mass. can get about -10f.<br /> David

 

[Kenny Bush]

Re: Oil injection - Keep or Remove

Any of your local autparts stores will have some Indicator lights (with different color lenses. Use red). As far as running your motor over winter, I think the point we are making here is "If you are going to store your motor for the winter, pickle it good". Down here in Texas, it rarely gets below +10f, so every few weeks on one of those 60 degree days, I run them for a while. You guys probably put them in the closet for a few months so you need to fog them and put some stabilizer in the gas tank. I use and love SeaFoam in my gas tank. I have so many gas powered toys and SeaFoam has kept them all running clean. Some of my engines have only had the impellars changed in the last 5+ years and they run great. The gas of today breaks down so fast when exposed to Oxygen, that it reaks havoc on fuel systems of today like the EFI's and DI's.

 

[dtherrien]

Re: Oil injection - Keep or Remove

Another quick question...How do you go about fogging an efi motor?<br />When storing the motori:<br />1.change lower unit fluid<br />2.last of the gas in the tank i dump seafoam in along with double oil mixture so i run 25:1.<br />3.Remove spark plugs and add about a table spoon of 2 cycle oil in each clyinder<br />4.grease and lube motor and trailer<br />5. Lower trim all the way down and remove flush plug so all water drains.<br />6. remove all batteries and store indoors