1964 40hp Johnson won't run

[alleymize]

Re: 1964 40hp Johnson won't run

Am I wrong in thinking compression is good if I can squirt fuel down the carb and it runs till I squirt more down it? I just have a squirt bottle and put the regular gas from the tank with oil in it. It sputters at first when trying to start and then runs about 3 or 4 seconds and quits unless I squirt some more and then it keeps going. This is where I am stumped. Gas in the bowl but no gas in the carb to go to cylinders. I am going to have to pull the carb again I think and clean it.

 

[alleymize]

Re: 1964 40hp Johnson won't run

Ditto to the response thing. If something is working why change it.

 

[rTagster]

Re: 1964 40hp Johnson won't run

and my compression would seem to be good to me if i can get it to run a little bit idling on the gas in the tank. but it is intermittent.

 

[lindy46]

Re: 1964 40hp Johnson won't run

As Lion Hunter says, if you have poor compression, you'll never get a motor to run right. That is the first thing I check when I go to buy a motor. If you have good compression, pretty much everything else can be fixed for a reasonable price.

 

[alleymize]

Re: 1964 40hp Johnson won't run

SUCCESS!!! I took the carb back off and cleaned the orrifice area and a big chunk off something came out from a hole I never even seen before. Now the question I have is shouldn't the starter motor stop spinning after starting? I put it into gear but the starter is still going but the gear from the starter has disengaged the flywheel and dropped back down. I also have a bit of a sputter when I start to go but I am guessing that is a matter of adjusting the needle on the carb right? Thanks for all your help and it shire is good to hear motor run!!!!

 

[rTagster]

Re: 1964 40hp Johnson won't run

Where was the chunk located again tim? just wondering. im gonna take my carburetor apart again and make sure everything is all clear.

 

[Woodonglass]

Re: 1964 40hp Johnson won't run

Send me a Private Message with your email address and I'll send you a copy of the manual for your motor, that is, if you don't already have one, and if you want one.

 

[rTagster]

Re: 1964 40hp Johnson won't run

so this thread is starting to get kind of long, but i had another question. I am trying to replace my coils on this same Johnson Seahorse CD-10 5.5hp and i was wondering if it was completely necessary to replace the points and condensors while i was in there. That seems a lot more complicated to replace all those so i was hoping i could get away with not doing that unless to effectively replace the coils i have to replace the points and condensors. This motor has been sitting around and not running for a very long time, so i think i absolutely need to at least change the coils.

Second question, or in need of a tip, i tried to take off the flywheel, while using a harmonic balancer i stripped the first few threads on my flywheel, luckily i can still send a screw in there, so i tried that method as well as tried prying it off with a screwdriver while pounding lightly with a hammer on the flywheel nut, and to no avail. Any tips that would help me get this off without damaging anything?

 

[alleymize]

Re: 1964 40hp Johnson won't run

RTagster the chunk was located in a hole that I had not seen in the previouss cleaning. In the bottom of the bowl is a hole that the pickup tube goes into when the bowl is screwed on. If you look down into this hole very carefully you will see another hole in the side wall of it. On my carb this hole then goes out in a 90 degrees from the pickup tube hole and thenmakes a 90 down to the drain tube hole where the high speed orifice screws into coming into the top. You really have to get it at the right angel to see it. As soon as I saw that I put the compressed air to it and BAm!!! out comes this chunk and it imediatly started after putting back together. Hope this helps you out.

Hopefully someone will let me know about the starter continuing to rotate after the engine is started. Now that it runs the last thing I want to do is burn up the starter or am I just seeing smoke from all the age and oil that has gotten on the engine from not starting for so long.

Hope someone can help.

 

[lindy46]

Re: 1964 40hp Johnson won't run

Hopefully someone will let me know about the starter continuing to rotate after the engine is started. Now that it runs the last thing I want to do is burn up the starter or am I just seeing smoke from all the age and oil that has gotten on the engine from not starting for so long.

Hope someone can help.

Sounds like a problem with the ignition switch. Once the key is released from the "start" position and it drops back to the "run" position, there should no longer be 12 volts going to the starter circuit. Starters are designed to run only for a short period of time. If it continues to run, it will overheat and eventually burn out.

 

[alleymize]

Re: 1964 40hp Johnson won't run

Well I did have to wire the key switch for this thing but the switch had no s pole so i just put the white on I think it was B or something.

 

[rTagster]

Re: 1964 40hp Johnson won't run

hey thanks Tim. I'll take my carburetor apart and make sure everything is clear. Glad you got yours running.

 

[rTagster]

Re: 1964 40hp Johnson won't run

so i finally tested my motor. and it has no compression at all. there is a little bit in one of the cylinders, the other there is nothing. seems to be pretty bad to me.

besides getting rid of the thing what are my other options in fixing it?

 

[rTagster]

Re: 1964 40hp Johnson won't run

so can compression be intermittent? i have gotten my motor to run a few times, so it makes me wonder if i was testing for compression the wrong way. all i did was hook up a compression tester to my spark plug and pulled the rope, and got nothing. but i've had it to run so i dont understand whats going on.

 

[Stevewatr]

Re: 1964 40hp Johnson won't run

Hopefully someone will let me know about the starter continuing to rotate after the engine is started. Now that it runs the last thing I want to do is burn up the starter or am I just seeing smoke from all the age and oil that has gotten on the engine from not starting for so long.

Hope someone can help.

Check your solenoid. If it is sticking, the start will stay spinning. BUT FIRST, if the gear is disengaging the flywheel, maybe the starter is not overrunning at all. Grab a voltmeter, or test light, check for 12 volts at the starter terminal, use the case of the starter as a ground.

As for the chunk that fell out the carb, check condition of the primer bulb, and fuel lines. Look for dry rot, old lines, and bulbs do not like the ethanol additives in today's gas. Check the bottom of your tank for debris that could get sucked up by the pickup tube while sloshing around (although there should be a screen on the pickup line to stop that. Lastly, the chunk may have been part of an oring that disintegrated. There are tiny ones inside the quick connect fittings at the tank, and motor ends of the fuel line, and a big one where the float bowl mates up to the carb in the middle of the bowl.

Good luck,
Steve W.