Eska Golden Jet 7 Question

H

Hodmokrin

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May 20, 2012
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Hello everyone. Thanks ahead of time because this is kind of a long post. Have a couple questions about my newly acquired Golden Jet 7... Model 1137, i think (tag hard to read)

I bought this the other day and cleaned out the fuel tank, bowl, etc... it would not run unless i put some gas directly into the bowl on the carb, so i figured i had a clog in the fuel lines. So then i cleaned them with compressed air, put it back together, and still no fuel in the bowl.... so then i found the little fuel pump diaphragm in the fuel inlet valve into the carb, and noticed it was completely stuck (not the one from the crank case). I removed this as it appeared it needed to be replaced anyway. So now i was just running basically gravity fed gas from my fuel tank attached to the engine.

I ran it at home, and it idled well, reved well etc, and seemed to be fine (ran it under load in barrel with water), but when i took it out for a test run on my boat, it seemed to run very strong, and then died out after about a minute. It would start up almost instantly after 2 pulls, and do the same thing. I realize it sounds like a classic fuel starvation scenario, but just wanted some opinions. Mainly whether i should replace the original fuel pump system, or disable the vacuum line (with modified carb gasket) from the crank case, and use a different fuel inlet fitting on the carb. After doing some reading tonight i realized this is most likely my problem, but I would rather go with a gravity fed option if possible. Is my fuel running into my crank case.... and maybe that is starving the carb? :facepalm:


I also wanted to mention that there is no fuel filter installed, but i plan to install one tomorrow with new fuel lines.
 
M

mrcrabs

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Re: Eska Golden Jet 7 Question

Is my fuel running into my crank case....
Click to expand...
most likley,
if you will notice the angle of the outboard on the boat Vs in the barrel things should come together for you. Also your motor is a marrine aplication there for it will use more gas than a lawnmower, it was designed to pull fuel from the tank not gravity flow.
I always recommend to replace every thing in the carb , pump, flapper & Gaskets, needle and seat and clean the jets behind the welch plug and install and seal new welch plug spark plug should be Champion RJ14YC or Autolite 86 the more common RJ12C will work fine also. Gap should be .35
 
H

Hodmokrin

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Joined
May 20, 2012
Messages
12
Re: Eska Golden Jet 7 Question

mrcrabs said:
most likley,

I always recommend to replace every thing in the carb , pump, flapper & Gaskets, needle and seat and clean the jets behind the welch plug and install and seal new welch plug spark plug should be Champion RJ14YC or Autolite 86 the more common RJ12C will work fine also. Gap should be .35
Click to expand...

I found the part number DI-52036 Tec 635-07 for the rebuild kit, does this sound right? Also would ebay be the best place to find it? I am chatting with sears parts direct right now, and the guy just asked my to confirm that i wanted a carburetor rebuild kit for my upright vacuum cleaner... sigh. Although i did get a little chuckle from his comment. :D
 
M

mrcrabs

Guest
Re: Eska Golden Jet 7 Question

http://home.earthlink.net/~brixent/Model1101-1144.htm
this engine model number Tec 635-07 and this outboard no. Model 1137 don't jive, Also I bet this thing has a old style needle and seat so before you invest lets see what you have. See if you can takes some pics of the carb, and float needle.
And no I wouldn't buy from Ebay unless it was http://stores.ebay.com/Boat-Sport-And-Tackle-Shop?_rdc=1
No affiliation but I have done business with them many times and I know where there parts come from, they are a autorized resller of genuine Eska parts...
 
M

mrcrabs

Guest
Re: Eska Golden Jet 7 Question

and the guy just asked my to confirm that i wanted a carburetor rebuild kit for my upright vacuum cleaner
Click to expand...
Sear is a good parts diagram parts lookup but they will take your money and 2 weeks later tell you they no longer stock that part even though its listed as instock...then 2 weeks after that you will get your refund :mad:

Call the nice people at www.certifiedpartscorp.com look under vintage for the phone no.
CPC is Eska/Tecumseh/Rupp and all Eska genuine parts originate from there
 
H

Hodmokrin

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May 20, 2012
Messages
12
Re: Eska Golden Jet 7 Question

The tag on the engine is t-635-07a .... the model number i now believe to be 1157 not 1137. So will this carb kit work? Do you have any idea whether it includes the diaphragm for the fuel pump? And i mean the small one inside of the fuel inlet tube, not the one that actually runs through the port to the crankcase. Thanks for all of your help by the way.IMG_0394.jpgIMG_0391.jpgIMG_0392.jpgIMG_0393.jpg
 
M

mrcrabs

Guest
Re: Eska Golden Jet 7 Question

I honestly don't know but what I would do is call Certified and ask to talk to Vern and ask him if the standard rebuild parts i.e viton seat and needle are interchangable with carb kit 631180, which is no doubt obsolete.
To my best knowlage what would happen with these obsolete carbs was when and if they ever failed and needed overhaul was that Tecumseh or Eska would send a updated OE service replacment carb which had the needle and seat well we use now.

I wouldn't spend a nickel tell I see the float needle :)
 
H

Hodmokrin

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Joined
May 20, 2012
Messages
12
Re: Eska Golden Jet 7 Question

Update: I rebuilt the carb with a kit i bought from ebay. Seems like the fuel inlet valve was not a problem, and was bypassed. Fuel pump "diaphragm" was replaced, and it seems to run quite well now. I ran it in the backyard with the hose connected to the water inlet tube for about 20 minutes, and it ran smooth, both idle and rev.
 
H

Hodmokrin

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May 20, 2012
Messages
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Re: Eska Golden Jet 7 Question

Bad news... runs much better but still same problem. I took it out to the lake the other day, and it will run for 1-2 minutes, then starves out of fuel. (i did replace the fuel pump "duckbill" and now there is no fuel being sucked into the crank case.) I thoroughly cleaned the carb, ran some sea foam through it in the gas, got a new spark plug and gapped it to specs. My float is the only thing that i haven't replaced, and it seems to be fine. Also my float needle is in good shape, and so is seal.

I was curious what anyone knows about the check valve that is a small brass unit (i'm guessing with some sort of rubber gasket) that actually is inside of the carb right where the fuel inlet valve is. Mine is shredded, and i ordered a new one. Does this part keep the needed pressure going to the bowl, and not allow fuel to go back into the fuel lines? Could this be my problem?


There is also some soft of valve (small diaphragm/gasket) in the fuel inlet valve itself that seems to be missing. The fuel inlet valve is "y" shaped to allow a second nozzle for an optional larger gas tank. Do i need to be looking for a replacement to this?

The darn thing idles nicely, revs responsively, runs at lower rpms with prop spinning indefinitely (ran for 45 mins today around the "start" position on the throttle), but when wot is applied, it runs for about a minute, then dies abruptly like it is out of gas. I know this is a fuel problem, but i can't seem to figure it out.

I am so frustrated at this point... please help.

If you need pictures etc, just ask, i will get them up asap.

THANKS MRCRABS!!!!!
 
M

mrcrabs

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Re: Eska Golden Jet 7 Question

Confirm the duck bill fuel pump element slot is positioned at the 2 & 8 Oclock position or 45 degrees, I think the diaphragm your talking about is the flapper valve and there should be a gasket under that...all of this needs to be positioned correctly and the flapper can't have any curls to the flaps or be frayed. to my knowlage there is no check valve but there is a atmospheric pressure relief hole on these carbs, position depends on carb model, some are on the side and some on top. Gas will drain from them when the carb is turned upside down.

PM me with a e-mail address for more information. or join the Eska yahoo group http://groups.yahoo.com/group/eskaoutboards/
 
H

Hodmokrin

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May 20, 2012
Messages
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Re: Eska Golden Jet 7 Question

The flapper valve most of these have inside of the carb, and mine does not. These usually have a small "manifold" that is removed to reveal the flappers and gasket, and mine does not have this. Instead there is a one way valve in the fuel inlet valve, and there is also another one way valve after the fuel pump that goes down to the bowl. I am beginning to think someone might have swapped out this carb with a lawnmower carb maybe???

When i get in all the parts, i will take some pictures, and document everything for this thread in case someone else runs into this.


I sent you a pm with my yahoo ID.
 
H

Hodmokrin

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Joined
May 20, 2012
Messages
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Re: Eska Golden Jet 7 Question

14-03bbc4e2d4.jpg


The image shows up on my pc, but is black on this page...... You can find the image on page 17 of the tecumseh tech manual i posted earlier in this thread.


If you look at the second to last image, the carb on the right is the one i have. You can see the small brass one way valve pictured with the carb. This is one of the valves, and the other one is located inside of the fuel inlet tube. I was wondering why the carb rebuild kit i bought included the flapper valves, because i couldn't find anywhere to install them.
 
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M

mrcrabs

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Re: Eska Golden Jet 7 Question

best I can tell you must have model 1197, AV600 unit block engine year 1968 this was a change year for Tecumseh and could have used a couple different needles and seats and three different inlets and according to the pics you have the early version with pump element and inlet with the check valve :eek:, if you had a viton tipped needle and brass seat or the old style all metal needle and used the newest version of the kit you will need to adjust the float to spec. 0.209 or a number 4 drill bit, 11/64 should be a no. 4 I think.
To my knowlage the check valve is NLA and that carb is more than obsolete. I have replaced several of these with 7.5 carbs for locals with old Eska's

I would differently be looking for a newer 7.5 carb with flapper valve setup....Ebay... usally about 39-50$ shipped

http://home.earthlink.net/~brixent/Model1194-1721.htm
 
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