1967 johnson 6hp

[josh870]

i wish i knew more about motors and had an air conditioned garage..

 

[SumDumGuy]

what changed? It was running fine before and now it's not?

oh, I see, you took the fuel pump apart. I will assume that you can pump the bulb and then start and sputter for a bit???

disconnect the output of the fuel pump (the hose to the carb) and put it in a bottle or something (or just let it spray). Pull the starter a couple/few times and see if fuel is coming out. If not you're correct that the pump is messed up.
Need more proof before accepting that the pump is "bad"? Elevate the fuel tank above the engine. Prime it up and start it. If it runs this way then the pump is not working correctly.

 

[josh870]

il try that in the morning. really dont want to accept that the fuel pump is bad because then i cant do anything i dont have any money.

 

[SumDumGuy]

If you find that it is a fuel pump problem take it apart and reassemble.

At worst you can get a cheap "lawnmower" pump off ebay.

At the very worst you could pump the fuel line bulb as you motor about.

 

[josh870]

well it was the pump so i went to take it apart and now i have a pile of unknown parts... lol whoops

 

[Kismet]

josh870 » 31 minutes ago[/url]"]well it was the pump so i went to take it apart and now i have a pile of unknown parts... lol whoops

I've always been told that is called a "learning curve."

I remain unconvinced.

Best of luck. Listen to the other guys. I flat-lined on my learning curve.

 

[josh870]

well i connected the fuel directly to the carb and the motor fired up but still died. i guess i gotta learn how to rebuild a carb...

 

[SumDumGuy]

did you gravity feed fuel to the motor?

Are the needle valves set correctly.... in a range that will allow running adjustment?

 

[josh870]

very helpful guy here https://www.leeroysramblings.com/

my carb is currently soaking in carb cleaner, and i have various parts coming in monday.

 

[SumDumGuy]

Check these links...

https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1967&hp=6&model=CD-24

part #37
https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1967&hp=6&model=CD-24&manufacturer=Johnson&section=Carburetor+And+Starter+Group

 

[josh870]

Soaked the carb overnight, figured out how to put the fuel pump back together and started first pull! Idled a little high but didn't die. I don't know where I'm supposed to set the rich lean needle thing

Correction, dies after a minute and idles way to high.
not sure how to fix the idle, but its dying from the bad fuel pump

 

[onthewater102]

Usually you gently set the mix screw(s) and then back them off ~1 turn and adjust from there with the engine running in a tank. You'll need to fine tune the adjustment with the boat in the water idling in gear. Looking up instructions isn't too hard for most motors.

As far as the fuel pump - is it just a diaphragm internal? Those are cheap to replace/rebuild if it is (<$10)

 

[josh870]

cheapest pump i could find is $40 on amazon. i figured out the needle, but its definitely idling too high and i dont know how to fix that. and it sputters out when i try to slow it down to shift.

 

[onthewater102]

does your motor have a threaded rod connecting the throttle cable to the throttle plate? it could be that the rod needs adjustment too - that was the issue with mine

 

[josh870]

i think i might have just messed up putting the carb back together. i dont see any way of adjusting anything

 

[fakirone]

onthewater102 » 21 Jul 2014, 10:02[/url]"]RULE #1 of buying used motors ALWAYS REPLACE THE IMPELLER AND LOWER UNIT OIL

heron2000 » 21 Jul 2014, 06:42[/url]"]just watched the vid - looks like plenty of water is being pumped

This may be true - but you don't know how old the impeller is, and while it's working now it's a $15 part that if it fails will really f' up your motor. There is another recent thread of a guy with a mercury who was told the impeller was changed by the previous owner only to find a crumbled mess in its place after overheating his engine and going through expensive repairs.

Even though it works it could be at the end of it's life cycle and ready to fall apart, less than a half hour worth of effort will tell you for sure.

Yup, that was me. I even knew better. Would up spending almost $300 in parts and about a weeks worth of nights fixing the damage... and honestly I was lucky, no piston or cylinder damage. OR I could have replaced the impeller before running on the river (which I had to do anyways once I overheated it) and been done.
I will NEVER run a motor again without know 100% positive how old the impeller is. Never.

 

[josh870]

Alright the motor starts up so beautifully but it dies when I give it throttle or slow it down

 

[onthewater102]

too rich

 

[SumDumGuy]

onthewater102 » 25 Jul 2014, 13:51[/url]"]too rich

the share the wealth, bro! :LOL2:

 

[josh870]

i just had the needle too loose so yea it was way too rich. runs fine now, still need a fuel pump though. ordering that tomorrow. this is an awesome little motor, thanks for the help guys!