1966 9.5 johnson sucking air

[Dbailey]

My motor will start and run fine for a few seconds... then, at idle, it starts to sputter and skip a little, then it dies. I have installed a carb kit and cleaned the carb, replaced fuel pump, replaced all fuel lines(including the one from the tank). I pump the primer bulb and it starts. Once it starts acting up, if I continue to pump the bulb, it runs fine. I tried to adjust the low speed mixture as per advice found on this board, but I did not see an improvement. Any ideas?? I appreciate any help or wisdom that anyone can share. Thanks.<br />Dustin

 

[Solittle]

Re: 1966 9.5 johnson sucking air

Bet there is still some crud in the carb. <br /><br />Also check for air leaks at all fuel line connections especially the little o rings.

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

Thanks Solittle...<br />I was thinking about the carb, but wanted to check with someone who knew more than I do before pulling it off again Also, how do I check for air leaks in the gas hose?? Like I said, I would like to try all the simple fixes first as I am somewhat of a novice at outboard repairs. Thanks again for the help.<br />Dustin

 

[wayne h]

Re: 1966 9.5 johnson sucking air

every hose connection needs a hose clap a good quality hose clap.i do not belive in spring claps.also are are the fuel lines new ? you said they where but are they ALL new ?

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

thanks for the reply...<br />I believe all the lines are new... I replaced both the line going into the fuel pump and to the carb. The line coming from the tank is about a month old, but I changed it out with another (not new) one and there was no change at all. By good clamps, you mean the regular hose clamps with the band and the screw? Thanks again for all the help.<br />Dustin

 

[wayne h]

Re: 1966 9.5 johnson sucking air

yes that the only kind of clamps i will use. if that does not help i would look at the the float level.when you did the carb did you make sure that was right ?just had a thought do you have a fuel filter ? maybe its clogging up? if you dont have 1 in line look in the tank i have seen screens on the end of the pickup tube.let us know

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

Ok...<br />I changed all the spring clamps and checked for any fuel filter, both in the tank and in the motor and found none. Motor still does not idle. I turned it to about 1/2-3/4 choke and it stays running, but when the choke is off, it still dies after about 15 seconds. Any other suggestions would be greatly appreciated as I am at the end of my knowledge!! Thanks again for the help.<br />Dustin

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

just reread your reply...<br />When i cleaned the carb, the manual said to replace the float so that the top of it is parallel to the top of the float bowl. Does this sound correct?? Thanks again.<br />Dustin

 

[Xcusme]

Re: 1966 9.5 johnson sucking air

If the manual says to set the float parallel to the carb top, just invert the carb body and let gravity close the needle valve. Avoid pushing on the float 'arm' to adjust the height. Excess pressure on the float arm can deform the rubber on the needle valve. Since you have the carb body inverted and the float sealing the needle valve, you can lightly blow into the gas line inlet tube to see if there is any leakage. If the needle valve leaks, replace the needle valve and it's seat. The seat should have a new washer too.

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

Well, I think I have pinpointed the problem...<br />I tried every bit of advice given on this board and still got no solution. As I was installing the carb, I noticed that the low speed mixer needle had gas on the outside of the o-ring. I think I have solved the mystery, but I have a new problem that needs addressing. I replaced the oring, pulled the rope, and the gear on the top of the starter that engages the flywheel completely stripped. My question is, Does anyone know where I can buy just the gear or do I have to replace the entire starter?? Thanks again for all the help and any info.<br />Dustin

 

[wayne h]

Re: 1966 9.5 johnson sucking air

evinrude dealer that are like 15 bucks its a known problem of that engine they are easy to change. you need to get a manual for that engine look on ebay they are cheap and life savers

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

Thanks Wayne..<br />I have a manual, but Everything I have done to this motor so far has had to be completely replaced... It has turned into a fairly expensive project. I appreciate the help. Take care.<br />Dustin

 

[wayne h]

Re: 1966 9.5 johnson sucking air

you might want to get a doner motor i found more then i can shake a stick at.if you are lookin for a whole engine for parts let me know i will come up with somthing for you.i have 4 of these engines it all started out with a boat and 1 motor a few months ago. then i needed a few parts and bought a parts engine.well it was too nice to use for parts so i put it in the corner.then 2 more came around and well not i have a few of these 9.5 units so if you are looking shoot me an email and i will help you out <br />wheinlei@tampabay.rr.com

 

[Dbailey]

Re: 1966 9.5 johnson sucking air

Thanks for the offer Wayne..<br />This motor is basically just a project. I wanted to learn a little about motors as we have three others on boats. This one was just used as a backup, so it is not really that important. I was trying to fix it and let the neighbor's sons use it. Again, thanks, but it's really not that big of deal. Appreciate it.<br />Dustin