Evinrude 9.5 hp idle issue

[7575650137]

I have a 1969 Evinrude 9.5 hp that coughs/spits/hiccups while idling, when faster than “start” it runs like a champ. New coils, points, condensers, plugs, rebuilt carburetor, getting frustrated, I think it must be in the carb somewhere, but I’ve had it apart twice and everything looks good. Anyone have thoughts to help?

[crosbyman]

it could be sniffing it’ own fumes  from a bad lower rubber skirt  in the lower hexaust  housing..  does it idle better  with the cowl off ??

could be dirty carb   ignition issue   link & synck    played  with the  idle mixture  needle  etc…

have your upped the idle a bit  with the side knob

Johnson (leeroysramblings.com)

check utubes parts 1 and 2  on full carb cleaning

(1542) 9.5 Hp Johnson Evinrude Outboard Carburetor Rebuild – 1of2 – YouTube

(1542) 9.5 Hp Johnson Evinrude Outboard Carburetor Rebuild – 2of2 – YouTube

 

Joining AOMCI has priviledges 🙂

• This reply was modified 3 years, 2 months ago by crosbyman.
• This reply was modified 3 years, 2 months ago by crosbyman.
• This reply was modified 3 years, 2 months ago by crosbyman.

[7575650137]

Thanks for the input. All new ignition parts, new rubber skirt, cowl on/off the same,, low speed needle adjustment and idle setting knob played with, carb rebuilt once and then stripped down again to ensure cleanliness. Don’t understand your “link & synck” comment. Thanks for the youtube references, will look at those now.

[crosbyman]

link & sync refers to the  picture   9.5 cam adjustment    it matches the mag plate linkage  with the openning of the throttle plate

(1543) Evinrude 9.5 hp Setting Timing and Points – YouTube

 

Joining AOMCI has priviledges 🙂

[7575650137]

Thank you crosbyman for the linkage adjustment attachment, I’ll check that when I can  over the next day or two. Did everything as shown in the videos and properly adjusted the float. But, I will also go back and check float adjustment again.

[fleetwin]

It is easy to get that lync/sync adjustment off on these engines, the roller/cam set up is obscured down low and can get mixed up during carb installation

[7575650137]

Did the link&sync adjustment this morning, engine runs so much better; That solved 95% of the low speed problems I had.  Now I need to get it on a boat to do some fine idle adjustment.

It’s good to know we have knowledgeable people on this sight willing to help others; thank you crosbyman and fleetwin for your help.

Tim

[crosbyman]

happy ending …great !!   now join up 🙂

 

 

some complain about turtles (9.5)  some love them ..like me

Joining AOMCI has priviledges 🙂

• This reply was modified 3 years, 2 months ago by crosbyman.

[7575650137]

Crosbyman,

I am a past member. I joined when I got into the hobby many years ago, member for 10-12 years. I sold off all my motors except 4 that have sentimental value.  I use the ones I kept on my inflatable dinghy for my sailboat. I value the resources that AOMCI provides and if I was still active in the hobby I’d be a member.

Thank you for your help and enjoy a great organization.

Tim

[Author]

Posts