1953/54 Evinrude Fastwin won't stay running

[stigger88]

Last weekend I had my motor out and it worked really well.

This weekend took it out, didn't change anything, and it seems it won't stay running...usually. I pull it and it starts and runs for about 2-3 seconds, then just dies. The thing is though, ONCE, it stayed running, and I was able to put it in gear and take it out and run it around and it ran just fine, but once I shut it off...back to the same problem of not staying running.

I took my carb apart and it looks good, I emptied the gas tank and tried new gas, but that didn't help. It WAS working, and did work once, so I have no idea what the problem is.

Any ideas/help is greatly appreciated.

here's a video of the problem:

 

[Daviet]

Re: 1953/54 Evinrude Fastwin won't stay running

It sounds like you have a fuel delivery problem.
Will it will start and stay running if you choke it?
Will it continue to run if you keep pumping the primer on the tank?
Have you tried squirting fuel into the carb to see if you can keep it running?

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

It sounds like you have a fuel delivery problem.
Will it will start and stay running if you choke it?
Will it continue to run if you keep pumping the primer on the tank?
Have you tried squirting fuel into the carb to see if you can keep it running?

won't stay running if I keep choked.
Didn't try to keep pumping the primer, but I can see inside the fuel line from gas hookup on motor into carb, and it's pumping fuel into carb.
haven't tried squirting fuel directly into carb either. There's a huge air intake on the front of the carb so I'd have to remove that and then try I guess.

 

[scottmm73]

Re: 1953/54 Evinrude Fastwin won't stay running

If the motor continues to start it doesn't seem like it would be a fuel delivery problem. It seems to me that maybe the fuel is to lean. Try enriching the fuel and see if it stays running.

Where are you from stigger, you may be close to someone who could help.

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

If the motor continues to start it doesn't seem like it would be a fuel delivery problem. It seems to me that maybe the fuel is to lean. Try enriching the fuel and see if it stays running.

Where are you from stigger, you may be close to someone who could help.

When you say "too lean" do you mean just the gas/oil or are you talking air too?

I'm from Minnesota

 

[scottmm73]

Re: 1953/54 Evinrude Fastwin won't stay running

When I say lean, I'm talking too lean of fuel/oil mixture. When you choke it you are reducing the air into the carburetor therefore enriching the fuel. You should have a low speed and high speed adjustment on the forward face of the cowling. By turning the low speed counterclockwise you will be enriching the fuel/oil mixture.

Where is the setting right now? Give me a clock position if it is not marked.

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

the bottom one (high speed) is set at 3. that's what the engine says to set it at and it's worked before at 3. the top one (slow) is at 3 also.

I use non-oxy 91 octane fuel, and mixed it with about a 24/1 ratio (impossible to be absolutely perfect).

 

[scottmm73]

Re: 1953/54 Evinrude Fastwin won't stay running

You said you took your carb apart; did you set the low and high speed needles properly upon rebuild?

See this link to properly set needle valves. You will start at (Carburetor Adjustments - Two Adjustable N/Vs)
(J. Reeves) which is the second section after the first set of dashes.

***Ensure you seat the needles gently. If you don't seat them gently you can groove the needle jets, which will cause problems.

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

I only took apart the carb to where I saw the float, then put it back together. But this problem was happening BEFORE I took apart the carb though. I'm just learning about trying to fix stuff and get it running, and didn't see any type of "needles" in there.

 

[HighTrim]

Re: 1953/54 Evinrude Fastwin won't stay running

Just to note, the fuelil mixture is not adjusted by anything on the motor, that is simply the mix in the tank. You adjust the air:fuel mixture. Semantics I know, but just clarifying.

The numbers on the faceplate are irrelevant. You need to remove the dials, then gently screw it in clockwise till she seats on both needles. Then back the top (low) out 1.5 turns, the bottom (high) 3/4 turn. After fine tuned on water, put the back on, pointing straight up and down at "3" just as reference so you know if it moved.

I will hazard a guess that the carb needs a rebuild and needs to be adjusted. The float needle is sticking, float not floating, etc...

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

how do I know when the needle "seats"?

 

[HighTrim]

Re: 1953/54 Evinrude Fastwin won't stay running

Seating is when it will no longer thread in. Just loosen the packing nut with 7/16" wrench, turn clockwise till seated, then back out as advised above.

Do this after cleaning/rebuilding the carb. If you need help on this let us know.

 

[HighTrim]

Re: 1953/54 Evinrude Fastwin won't stay running

Other things to note:

If the float needle has a rubber tip, it needs the wire circlip to properly function. Common problem.

Are the original cracked coils replaced?

High speed boss gasket installed?

Fuel filter clean?

Fuel oil supply fresh, no water present?

 

[nwcove]

Re: 1953/54 Evinrude Fastwin won't stay running

just a side note.....but when its mentioned to "gently" seat the needles.....thats very important! dont wind them in like you would with a wood screw!

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

Ok guys, thanks for the patience and all the help. Worked on the motor a bit today. reseated the needles and readjusted to how you guys said. I couldn't fine tune like the article says, because It wasn't staying running the whole time to adjust.

***I did find 1 thing out....if I stay at 1/2 choke...it works and will stay running. as soon as I take the choke off though, dies 1-2 sec later.---that's about the biggest breakthru i've had.

 

[HighTrim]

Re: 1953/54 Evinrude Fastwin won't stay running

Rebuild and clean the carb as we mentioned above. Ensure all gaskets are good, fuel lines new and connections tight. If after rebuild it is still overly lean, you may have a worn carb, or worn throttle shaft, etc...

I had a motor once that leaked air through the porous metal itself. That one was tricky to diagnose! that is only 1 though out of hundreds of motors. I needed a new carb for that one.

What if you back the low speed needle out to like 3 turns out from seated?

 

[nwcove]

Re: 1953/54 Evinrude Fastwin won't stay running

as mentioned , you probably should properly clean and re-kit the carb......its usually a given on any motor that has been dormant for awhile. not a big job, and plenty of help here if you get stuck.

 

[82rude]

Re: 1953/54 Evinrude Fastwin won't stay running

just a wild shot in the dark .that motor uses a pressure tank.is it sealing as in cap tight ?before you start the motor are you pushing the plunger on the tank or the little button?that is a pressurised system and loosing the cap or other ways of venting are a no no.

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

just a wild shot in the dark .that motor uses a pressure tank.is it sealing as in cap tight ?before you start the motor are you pushing the plunger on the tank or the little button?that is a pressurised system and loosing the cap or other ways of venting are a no no.

the cap's tight and fully sealed. I push the little button to prime it, but as soon as I connect it I see gas going up to the carb, so I know it's getting gas.

Looks like I'm rebuilding / getting a whole new carb. hopefully that'll do it.
There is a huge used outboard motor shop by my house "twin cities outboard" and that's usually where I get parts from. Should I try to get a used carb for it and hope it works, or just get a new carb kit and put it together? I was lookin on marineengines.com and they didn't have any specifically for a 53/54 with my model # (15201 I think) but they had one that was similar. Best place to get a carb kit for this old of a motor?

thanks guys.

 

[stigger88]

Re: 1953/54 Evinrude Fastwin won't stay running

Rebuild and clean the carb as we mentioned above. Ensure all gaskets are good, fuel lines new and connections tight. If after rebuild it is still overly lean, you may have a worn carb, or worn throttle shaft, etc...

I had a motor once that leaked air through the porous metal itself. That one was tricky to diagnose! that is only 1 though out of hundreds of motors. I needed a new carb for that one.

What if you back the low speed needle out to like 3 turns out from seated?

If I back the low speed out liek 3 turns it just doesn't even start up. I suppose maybe I can just try like 100 times to get them exactly kind of perfect, but it's a huge guess and check game, and not sure if that'll even work