1996 9.9 runs with choke

[RyanC123]

I upgraded from my 1957 evinrude to a 1996 johnson 9.9 . Got it from my friends dad you just had it serviced, but then it sat in a garage for 3 seasons. It has hardly any hours on it , no even the stickers under the cover on the engine look new.

It ran PERFECT the first few times out, then after I planned a trip and bought a special trout license, I got it in the water and it starts great with the choke out and then dies when I push it in and advance throttle.

I have mixed fresh gas and all that.I have read the other threads that suggest carb issues-My question how much can i do to the carb ? I have all the tools needed and and plenty of automotive experience but not on carbs and not on outboards.

I have also had people tell me the tank vent could be it. how can I check the vent?

I have the exploded view of the carb here
http://shop2.evinrude.com/ext/index.aspx?s1=761afddee454ca363cccf34aae64645c

Thanks in advance for any help.
Ryan -

 

[HighTrim]

Re: 1996 9.9 runs with choke

Welcome to iboats Ryan.

It does sound as if it is time for a carb bath and rebuild, you will find varnish throughout I would imagine after sitting. Pay special attention to the jets. It is not a difficult thing, but much easier if you get yourself a factory OEM manual. Check www.ebay.com or www.outboardbooks.com for a factory reprint. The following video may also help for your first time.

http://www.meegsonline.com/tmd/TMDsVideoChronicle2.wmv

Do you have your tank vent open? It should be un restricted.

On a side note, I would also replace the impeller. They should be done about every 3 years as you probably know, and since it has been sitting is likely rotted.

 

[RyanC123]

Re: 1996 9.9 runs with choke

I don't think my tank has a vent, is it a cap you unscrew or part of the gas cap. I was confused the moment someone said tank vent because I dont think it has one.
Am I missing something obvious?

 

[tashasdaddy]

Re: 1996 9.9 runs with choke

are you using a metal or plastic fuel tank. johnson metal tanks the cap has a built in vent. the plastic have a knob in the center of the cap that you have to open to vent the tank. you symtoms sounds like a gunked up carb.

 

[RyanC123]

Re: 1996 9.9 runs with choke

I just checked it , no vent on cap. 6 gallon plastic tank.

 

[tashasdaddy]

Re: 1996 9.9 runs with choke

could have wrong cap on it. loosen the cap and see if that helps. this is a plastic tank cap.

 

[RyanC123]

Re: 1996 9.9 runs with choke

I checked johnsons web site and it says the tank is auto venting, and it ran good for several trips at first so I think it's the carb.

I am about to order a Seloc repair manual, is that the one to get or should I get another brand of manual?

 

[tashasdaddy]

Re: 1996 9.9 runs with choke

outboardbooks.com get the number and try to find one on ebay. spend the money of a real manual, not a knock off.

see the sticky on carb cleaning at the top of the page. cool if you are running a johnson tank.