93 175 fast strike oil injection

[cityjack]

Afternoon all,

My 175HP fast strike is running well and I am still learning it as I go. I have no alarms and just want to be sure that my oil injection system is working. I emptied the oil tank of whatever the previous owner had in there just to be starting with a clean slate. I filled mine with new 2 stoke Evinrude oil. I put a piece of tape on the oil tank where the oil level was after I filled it so I could see if the level was changing. Aside from this tape method, is there another way of making SURE the oil injection system is working? I am trying to make sure everything is working fine.
Last question, on my boat dash I have an aerator switch. I know years ago my father on his OMC I/O he would always run this aerator for a couple minutes before starting the engine if we sat for awhile fishing. What does this do for me? If I didn't run the aerator before starting and taking off, what would happen?

Thanks

Sid

 

[Chris1956]

Re: 93 175 fast strike oil injection

Well, Now that you have introduced air into the oil supply line, you will likely have issues. You must run 50::1 premixed fuel until you verify the oil injection pump is working. Disconnect the oil line from the VRO pump (motor off), pump oil primer bulb until you see oil w/o bubbles. Now connect to VRO Pump and prime once more. Now mark oil level on reservoir and run a tank or two of premix fuel and note oil level or just refill. It should take a pint (6gal) or 1 qt (12 Gal) of premix fuel. If the oil usage is correct, you may trust the oil injection again.

 

[Chris1956]

Re: 93 175 fast strike oil injection

Your father likely ran his bilge blower a while. I doubt you will have one on an OB powered boat.

 

[metriccrescentwrench]

Re: 93 175 fast strike oil injection

Yep, on an I/O you have a bilge BLOWER to purge the bilge of gas fumes. An AERATOR pumps air into a livewell so the fishies can breathe.

 

[cityjack]

Re: 93 175 fast strike oil injection

Chris,

Thanks for the reply. Barnegat huh? Born and raised up in Matawan, Monmouth county. Anyway, you say I introduced air into the oil injection system. I used a siphon to pull what I could out of the oil tank until the siphon could get no more. I am sure there was some left in there though in the hard to get spots. I completely filled the tank back up before I started the motor though. Do you think I still got air in there? I would still like to verify the system with this primer bulb method though. After I remove the oil line from the VRO pump, where would I find the oil primer bulb at? Are you referring to the fuel primer bulb that I pump up before starting? My gas tank is about close to empty or about a 1/4 tank. Will I still need to run a tank or two of 50:1 pre-mix if I get oil to come out with no bubbles?

What would be some signs of the oil injection system not working if I did allow air into the system? Wouldn't my alarm system sound if it were not working?

Thanks

Sid

 

[Chris1956]

Re: 93 175 fast strike oil injection

Sid, I do not know if you have the no oil alarm on your motor. It may be too old for that. I don't know if you introduced air into the fuel line, but you do not want to take chances. The oil line should have a primer bulb near the oil reservoir. I would mark the oil tank level and fill your main fuel tank with premix and run it a few days. If the oil level in the tank drops the proper amount, you are probably good to go.

 

[cityjack]

Re: 93 175 fast strike oil injection

Thanks Chris,

I do have the alarm system. I will look for the oil primer bulb tonight. I will mix up a tank of 50:1 and run it like you suggest. If the oil pump is working correctly at the same time I run 50:1 pre-mix, is it bad for the motor to get TOO much oil then? Lastly, I am supposed to prime the oil pump every time I start like I do the fuel primer bulb? Even after sitting on the lake for a couple of hours of fishing? Is there a sequence to which you prime first?

Thanks a ton Chris.

Sid

 

[cityjack]

Re: 93 175 fast strike oil injection

Chris,

I do have the alarm system on my engine. If the oil pump is working and doing its job, is it bad to get TOO much oil to the motor as I am introducing 50:1 through the fuel tank as well? Also, should I prime the oil pump everytime I start like I would the fuel primer bulb? Is there a sequence to which you prime first?

Thanks

Sid