85 Hp Force Motor Starting Problem

[paddymichaud]

Hi there,

First of all let me begin by saying what a great site you have here. This will be my first post. Anyhoot on to business. I have an 85 hp Force motor which has been very good to me for the last 5 yrs, but I am now experiencing problems whenever I want to start the sucker. Here are the steps I have to take to get it started now:

1. I tilt the motor out of the water
2. Prime bulb (if it hasn't been used in over 2 weeks)
3. Attempt to start with choke untile engine begins to run.
4. Turn engine off as soon as it starts
5. Put motor back in water
6. Attempt to start (it wants to but, no luck with or without choke)
7. Tilt the motor out of water once again
8. Attempt to start until engine runs *** HERE'S SOMETHING I HAVE NOTICED *** in this step -> Once the engine starts a bunch of water blasts out of the water pump outlets as though it was jammed in there.
9. Turn engine off as soon as it starts because it isn't in the water
10. Put motor back in water
11. Engine starts and runs perfect until it hasn't been used for a few days, then I have to redo this procedure to start it.

So I am assuming this is a problem with debris in the water pump outlets or with my water pump. I have never serviced the water pump in the 5 yrs I have owned this motor, but I always made sure that there was indeed some water coming out from the outlets. I would like to fix this before this gets any worst. Any ideas? Am I on the right track by assuming this has something to do with the water pump?

Thanks in advance

 

[ocervantes]

Re: 85 Hp Force Motor Starting Problem

I had the same problem on my 85 HP and all I did was to change the impeller and gaskets, thermostat and the problem was gone. Good Luck!

 

[Nate3172]

Re: 85 Hp Force Motor Starting Problem

????Not sure how a water pump/impellar or thermostadt is going to cause it not to start after sitting. Makes no sense how that would effeect your spark, air, and fuel which are the main ingredients that an engine needs to start and run. I would be doing some service work on your fuel system and I think you are trying to relate two seperate problems as if they are connected to each other. It's possible your engine just needs some routine maintenance such as impellar and a good cleaning of the fuel system. A de-carb and some spark plugs might be a good idea also.

 

[hgmatt]

Re: 85 Hp Force Motor Starting Problem

I think I am having the same problem with my Force. I am going to assume that you don't have muffs for your Force & are using it in a tank. My Force won't start unless its in the tilted position, I think this is due to my carb setting being too lean. Now, I think that you should do a decarbon treatment and clean your carbs, because your getting the the same lean condition.
Now for the impeller & water problem: Change your impeller and inspect your water pump housing. The impeller should be changed yearly (annual maintainence) and the water pump should be inspected during this time. I would image that your motor is spitting out water after you try and start it in the tank because during this time, the impeller is still pumping water into the engine block, but there is a little bit of water pumped in at this time. Once you take it out & try and start it, the little water pumped in is shot out once it gets started.

 

[paddymichaud]

Re: 85 Hp Force Motor Starting Problem

Thanks for all your responses. I will definitely change the impellar and inspect the pump housing since this hasn't been done in about 5 yrs and I will also decarbon my carbs. Spark plugs are brand new, but the carbs most likely need a good cleaning as well since I've only used some carburator cleaner this spring, instead of taking the bowls off.

 

[Nate3172]

Re: 85 Hp Force Motor Starting Problem

Just in case you were not aware of this, de-carb is in reference to cleaning the carbon off the pistons, rings, and combustion chambers. This can be done with Seafoam. Cleaning your carburetors is a little differen't. De-carbing the engine can foul out your spark plugs though, so If you do this, it would be a good idea to just go ahead and change them when you are done.