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Hookmaster

Help with running a motor that's sat for 4 years

11 posts in this topic

I have a 1985 25hp Johnson motor that hasn't been run in 4 years. It was winterized before this long hiatus. I plan to use it this fall. What are the steps to best ensure that I can get it running? I have never decarbonized this motor, is this something I should include in the process?

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At the time that outboard was made the recommend oil/gas ratio was 100:1. Thats been revised to 50:1.

Heres what I'd do if it were mine. Change the impeller, new spark plugs and drain and replace the gear oil.

After running it you may find out she runs like a top and all you need to do is the normal maintenance. Or you might find out the carb is dirty and it'll need to be cleaned and the lower unit is leaking oil or water into the oil.

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I'd spray some oil into the cylinders to ensure you have lubrication and compression.

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Wait to do the decarb and new plugs until motor is running good. It will be one less concern if motor gives you any grief on start up. I would run the first couple gallons of gas 24 to 1 like a new motor break in then go to 50 to 1. When you do the decarb Seafoam Deep Creep in a spray can is awsome stuff. After you decarb then put on new plugs.

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I got it running on the muffs yesterday. I flooded it which usually doesn't happen. I almost gave up but after about 25 pulls (I got my workout in), she fired up and ran great. I'll get it on the lake some night this week. Anybody have a recipe for decarbonizing or shouldn't I even do it if it is running well?

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If it run's well I would leave it alone. Sometimes messing around will get yourself in more trouble. Unless you know there is a problem.

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Run it a couple of outings to verify it is running good. Buy a can of seafoam deep creep and warm the motor up. With cowling off slowly keep spraying the deep creep in till motor starts to stall and quit spraying till rpms come up. Keep doin g this till about 1/4 can is sprayed in. Then take the plugs out and nuke them with deep creep and put the plugs back in. Wait over night or a couple of hours then run the motor hard till it quits smoking. Plan on replacing plugs afterwards.

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I ran it last night. It was like it was never in storage. I'll change the lower unit lube and put in new plugs and away I go.

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The older Johnsons were a pretty dependable motor. Seems like you could abuse them much more than the newer motors. My dad had a 9.5 HP Johnson that hadn't been started for about 6 years till this spring. Dad told me I bet it will start in 2 pulls. I said no way I will have to do a carb job and all kinds of stuff to it but I decided to try starting it first. It fired off on 3 pulls. Idled a little rough so I added some OMC engine tune and new plugs and it runs a good as it ever did. I had to call dad and say you know you were way off it took 3 pulls not 2 grin.gif.

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congrats you are lucky.

I'd still run a can of sea-foam through the first tank of gas to help clean it up a bit and you better just watch it so no gunk gets loose and bogs it down for a while...

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Seafoam's already in it!

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  • Posts

    • JBMasterAngler

      Posted

      Drove all the way up to grindstone this morning from Forest Lake. As I'm driving along the shoreline, I can't stop admiring how beautiful of a day it is, and how great it will be to be on the water. Was totally amped up to fish for some trout! Then I pull up to the boat launch...and it's closed down! :mad: This dredging project has been pushed back for years, then they finally decide to do it on a beautiful sunny day, that I picked to come here...on the last day of the lake trout season nonetheless! Needless to say, I was very upset! 

    • papadarv

      Posted

      1 hour ago, delcecchi said:

      I bet the state, not the political cronies, would get a lot more money by having the auction on the internet or allowing phone bids.  Heck, put them on the bay of E. 

      Actually DMV and DNR do quite well at their auctions. You win bid, You Pay, You own. No red tape, no collection process, simple and things seem to sell for quite a bit of money. Go and one see for yourself, its quite amazing. Lots of them at the Arden Hills DMV. Hard to collect money over the phone and on the internet. I do believe they will use the same auction process for this property sale as the DMV and DNR are good at it and a lot of buyers will be there. If the internet were to be used, the "political cronies" would need to create a bill, Ear Mark several million to develop a site, create an app, hire 40 to 50 people to manage and than increase taxes to cover the cost much like Obama Care Not a good plan. If your interested, go to auction, bring lots of money, win a bid and own.

      2016 MN auction schedule if your interested in going to one.

      http://mn.gov/admin/citizen/surplus-property/auctions/schedule/

    • SpecialK

      Posted

      They were dredging there today. Not sure if they are done or if it will take longer.

    • the weather has not been good this past week either, but fishing was still do able. Pike island is a popular spot and I am sure you can find fish there. Gold is. would be worth a try as would the area around the wolf pack. We had 4 nice walleye today and a great fish fry tonight. Heading home in the morning for the season. so good luck

    • I bet we will end up going to red trying to convince the couple guys that dont like sleepers for some reason that a 10x24 sleeper is just like a cabin and that we can bring 2 portables to bounce around if we want. Dont really need a guide ill probably allready have gone there 3-4 times before this trip.... Maybe superior will freeze good this year and I can convince them to go there i guess I just get kinda bored or red sometimes

    • delcecchi

      Posted

      I bet the state, not the political cronies, would get a lot more money by having the auction on the internet or allowing phone bids.  Heck, put them on the bay of E. 

    • delcecchi

      Posted

      On 9/13/2016 at 4:37 PM, loadmaster said:

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    • Wanderer

      Posted

      I guess if you want it bad enough, you'll be there.

      "Oral" auction might be the law when it comes to this type of sale.

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    • HunterFisher11

      Posted

      Thanks for the info!!! Will be up there on 10/5-10/8, have been looking at the weather and I hope they are wrong because looks like rain... Have you ever tried fishing out on pike island area? Brother inlaw drove down there this summer and said there were quiet a few people fishing there.



  • Posts

    • JBMasterAngler
      Drove all the way up to grindstone this morning from Forest Lake. As I'm driving along the shoreline, I can't stop admiring how beautiful of a day it is, and how great it will be to be on the water. Was totally amped up to fish for some trout! Then I pull up to the boat launch...and it's closed down!  This dredging project has been pushed back for years, then they finally decide to do it on a beautiful sunny day, that I picked to come here...on the last day of the lake trout season nonetheless! Needless to say, I was very upset! 
    • papadarv
      Actually DMV and DNR do quite well at their auctions. You win bid, You Pay, You own. No red tape, no collection process, simple and things seem to sell for quite a bit of money. Go and one see for yourself, its quite amazing. Lots of them at the Arden Hills DMV. Hard to collect money over the phone and on the internet. I do believe they will use the same auction process for this property sale as the DMV and DNR are good at it and a lot of buyers will be there. If the internet were to be used, the "political cronies" would need to create a bill, Ear Mark several million to develop a site, create an app, hire 40 to 50 people to manage and than increase taxes to cover the cost much like Obama Care Not a good plan. If your interested, go to auction, bring lots of money, win a bid and own. 2016 MN auction schedule if your interested in going to one. http://mn.gov/admin/citizen/surplus-property/auctions/schedule/
    • SpecialK
      They were dredging there today. Not sure if they are done or if it will take longer.
    • Dusty
      the weather has not been good this past week either, but fishing was still do able. Pike island is a popular spot and I am sure you can find fish there. Gold is. would be worth a try as would the area around the wolf pack. We had 4 nice walleye today and a great fish fry tonight. Heading home in the morning for the season. so good luck
    • ZachD
      I bet we will end up going to red trying to convince the couple guys that dont like sleepers for some reason that a 10x24 sleeper is just like a cabin and that we can bring 2 portables to bounce around if we want. Dont really need a guide ill probably allready have gone there 3-4 times before this trip.... Maybe superior will freeze good this year and I can convince them to go there i guess I just get kinda bored or red sometimes