TOPIC:

cballer wrote:

Got ranger out yesterday, played with high speed a bit, made no change to coughing when starting. Ended up putting back where I started roughly 3/4 turn open. Was kind of the laugh of the boat launch until motor warmed up. She ran amazing all day in 2 foot swells, lake was windy/cold/rough.

Finally got some blood on ranger though fishing was hot!




 

Hey Curtis,

I'd like to share my experience with my 1957 35 hp Johnson.

I would get the sneezing, too. 

Here is what I have come to believe and practice.

The best setting for the low speed jet is not the same for these motors when started cold Vs after being warmed up. They have no thermostat but there is more to the story than that.

What I found is that if the low speed jet is moved counter clockwise about 45° (1/8 of a turn) on a cold start the sneezing stops. Also the manual choke can be used to stop sneezing by only closing it a small amount.  The throttle can also be moved sitting in the back at the motor by grabbing the mechanism and giving it a slight twist. 

Both of these techniques require the operator to be in the back of the boat at the motor. If you have the proper warm low speed jet setting then loosen the screw on the knob and set the pointer to 12 o'clock. This way you can get back to the proper setting(12 o'clock) once the motor has warmed up. While sitting at the motor simply move the low speed jet until sneezing stops and make a mental note of where it is. Next time before starting the motor move it to this remembered location. 

Ditto for playing with the manual choke knob.

Unfortunately the push button solenoid only operates full on or full off. If you hit the panel choke switch every few seconds for just a second or a fraction thereof you can also greatly reduce or stop cold engine sneezing.

What I usually did was to use the solenoid operated choke switch to cut down on initial cold sneezing and as soon as possible get in gear and get up to 1,000 rpm or so in gear and get underway. Quite often I would paddle my boat to be pointing in the right direction, give it a little throttle(a very little) and hit the start and choke switches simultaneously and off I'd go. (I also did this to eliminate shift dog wear as I do not like putting a cold engine in gear while jockeying the throttle and shifter).

Aside from not being the best for a motor, a sneezing motor can be quite embarrassing.

And not just embarrassing to you, but embarrassing to onlookers, too. 
 

 

Ray ok thank you, next trip out.

Low speed jet if it’s coughing on startup and while idling.

Got ranger out yesterday, played with high speed a bit, made no change to coughing when starting. Ended up putting back where I started roughly 3/4 turn open. Was kind of the laugh of the boat launch until motor warmed up. She ran amazing all day in 2 foot swells, lake was windy/cold/rough.

Finally got some blood on ranger though fishing was hot!

 

Makes me think of my 51 25 hp Johnson,  as it got colder I would richen up the jets to get it running right, then eventually put it away for the winter then in the spring get it out and wonder why it was not starting, then finally remember to lean it back out and it would be fine.

Alanbiltz THX!! Will do! What you saying makes sense I’m 3/4 turn out on high speed right now.  
We are holding 
a low of 26F and high of 50F with heavy rain at the moment.
much appreciated 

cballer wrote:

Question about setting jets as it’s starting to get colder here and plan on using boat a lot this winter..

I noticed last time I went out motor was starting to cough a bit until it got warm. I know it was mentioned to me in this thread that once it gets colder I’ll more than likely have to make adjustments to my jets..

is there a best practice on adjustments to carburetor with temp change so I’m not chewing up my packing causing me to chase my tail for hours on end like I experienced on start up..?

Its what commonly called a "lean cough"  I would richen up your settings just a bit before the temp change as its better on the motor to run a little rich than to run lean.  That being said I run my motors up until November something,  it just depends how constantly cold the fall gets but it's over for us below 50 degrees f.   So try that and see if it gets worse for you as it gets colder you might not have to mess with it seasonally.

Question about setting jets as it’s starting to get colder here and plan on using boat a lot this winter..

I noticed last time I went out motor was starting to cough a bit until it got warm. I know it was mentioned to me in this thread that once it gets colder I’ll more than likely have to make adjustments to my jets..

is there a best practice on adjustments to carburetor with temp change so I’m not chewing up my packing causing me to chase my tail for hours on end like I experienced on start up..?

Alan this crossed my mind a couple times I wasn’t sure it would work sliding past splines. This just might have to be the fix if it’s cheaper than finding replacement.
thank you!

Mike thank you, well we know it’s 48-51 for sure.. I’ve read a bit now. Carbs done, establishment spark without spark plug but no spark with plug in place which is bizarre.. condenser/coil/wire/points actually check out but have a feeling they all need replacement.. coil pack is starting to separate, condenser does meter what it should but it’s old and should be replaced.
I’ve not found much for service parts so maybe another dead in the water strike out. 
there’s supposed to be a good write up in Antique Outboarder January 2009 edition on page 11. Not found yet.
Beautiful motors really and unique to being first era of having a cowling.
Anyways thanks a bunch for making the time to reach out to the antique group for me!