Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

[razopp]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

Based on this great feedback, I just ordered the following from iboats.

1. Two new external coils (18-5172)
2. Two Champion J6C plugs
3. The Tune-Up Kit (18-5002 ) I not install this until I get the fuel issue figured out.

I previously ordered the carburetor kit (18-7222) from iboats last week and was hoping not to have to do it as it seems a little intimidating. I got the one with the float included. Once I make sure the fuel pump is working, I will then proceed on the carburetor rebuild.

I plan to turn the fuel pump over as mentioned above before I do anything else and then go from there. Another quick question, how much fuel should come out of the pump when I pull the motor over? I plan to pull the hose from the bottom of the carb bowl and hold it roughly level withe fuel pump height. Should there be a jet of water that squirts or does it more slowly surge out?

Thanks again,
Robert

 

[Daviet]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

If you notice how small the nipple on the carb is, it doesn't take a large volume of fuel. The fuel should spit out every time the piston goes back and forth.

 

[razopp]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

I turned the fuel pump around per the poster further up. The output to the carb is now on the bottom. When I performed the test below with the hose off the carb and pulled the motor over it did squirt fuel.

Per Daviet's comment, I then took out the drain screw in the front of the bowl. When I pumped the bulb fuel ran out of the drain hole. Does this mean I need the carb kit done.

Thanks,
Robert

I would get it running first, fix one problem at a time.
NYou shouldn't use stsrting fluid, no lube in it for the cylinders.
I think some auto parts stores carry them, at least around here auto zone does.
If you can't find one you can try and insert a phillips head screw driver into the spring inside the boot that snaps over the plug end and hold it 7/16" from a ground. Make sure it's an insulated screw driver.
If it will fire if you squirt fuel into the carb, you have a fuel delivery problem. Pull the fuel hose going to the carb and pull the engine over, does fuel squirt out of the hose? Remove the 7/16 drain screw out of the bottom of the carb bowel and pump the primer bulb, does fuel run out of the drain, if so you are going to have to pull the carb and clean it and put a kit in it.

 

[AlTn]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

that simply means you're getting fuel to the carb and it's draining...maybe the reason the carb rebuild looks so intimidating is that the diagrams show every piece, spring, linkage, rods, screws, shots and core plugs, throttle shafts, etc. and you may think you have to dissasemble it to that level which isn't close to the case < hopefuly >, in fact, your carb is pretty simply to rebuild. Note how the choke lever comes off, put a little mark on the top if necessary, and how the linkage works on that side, pics if you choose. Two carb to manifold nuts then remove the fuel line. Do you have a manual for this motor?

 

[razopp]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

Thank you and that is what I assumed. Yes, I do have the manual, but it is one that covers several years and makes. The pictures are pretty good and I have the Sierra kit which comes with instructions as well. I think I will have to get into the Carb this weekend. Good times are ahead. Thank you everyone. I will update once I complete the carb rebuild and float kit installation.

that simply means you're getting fuel to the carb and it's draining...maybe the reason the carb rebuild looks so intimidating is that the diagrams show every piece, spring, linkage, rods, screws, shots and core plugs, throttle shafts, etc. and you may think you have to dissasemble it to that level which isn't close to the case < hopefuly >, in fact, your carb is pretty simply to rebuild. Note how the choke lever comes off, put a little mark on the top if necessary, and how the linkage works on that side, pics if you choose. Two carb to manifold nuts then remove the fuel line. Do you have a manual for this motor?

 

[razopp]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

Well I was able to get the motor started for the first time in a little while after rebuilding the carbs. It started and ran rough, but at least it started. I had a gentleman far more experienced than I in outboards come over to help. It definitely still has a fuel problem, but at least would run.

Below is everything done thus far below.
1. Replaced the water pump/impeller (Sierra kit with the new wear plate)
2. Put in new plugs (J6C)
3. Added a new fuel pump (Sierra 18-7350;see notes below)
4. Put on two new coils to replace the cracked ones
5. Replaced the fuel lines (see below)
6. Installed the Carburetor rebuild kit (Sierra 18-7222)

Results from First Run
-Water Pump worked great
-Carburetor-Slow Speed Jet had to be turned 3 turns out to start and then tune in.
-Slow Speed Needle was missing the "pointy-end" before clearing. (See picture) It was reinsterted and re-seated itself. I think I still need to clean it again.

-Was told by the gentleman above the carburetor float was sitting too high and needed to be adjusted again. Will need to disassemble and correct. I followed the instructions, but did not get it exactly correct apparently.
- Fuel hose from fuel pump that was reinstalled is pinching as the output to the carburetor is pointing straight down. He told me I needed to disassemble the fuel pump and clock it around 1/4 turn so the output is going forward. He also told me the store sold me vacuum hose and not fuel line. Will need to go back and buy new fuel hose again.

Wanted to send an update and thank everyone for the help. Hopefully it will run smoother soon. I still have the points and condenser to adjust after I get the fuel issue resolved.



Robert

 

[nwcove]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

jmo, but i'd check/adjust the points before you do much adjusting to the carb.

 

[razopp]

Re: Are these coils cracked? - 1973 Johnson 20 HP Seahorse (Won't Start)

Thanks for the input. I had similar thoughts. I do agree with the fuel pump and fuel lines. I was hoping the carbs will clean themselves out. I will fix the fueld pump and the fuel lines and then attack the points and condenser replacement.

My little success below made me feel a lot better overall to be honest and I owe the people on this board a lot of gratitude for getting me this far.



Robert