Question for Rodbolt

[digger63]

I have a 2001 yamaha 130 that will not idle. If I put the motor in gear it will run fine, but if I put it in neutral it spits every few seconds and eventually cuts off. It runs perfect at wot. As long as I place it in gear it will run fine even if I don't give it any throttle. I just had a mechanic adjust the carbs because of this same problem. The only difference was before the motor would do this even when I was trolling. Each time it spits, a puff of smoke comes out. Can you give me some suggestions on what to try for this problem? Thanks.<br /><br /> Alan

 

[Osprey]

Re: Question for Rodbolt

Sounds like plugged idle jets. Were the carbs just adjusted or were they rebuilt - disassembled soaked cleaned then adjusted? How do the plugs look?

 

[seahorse5]

Re: Question for Rodbolt

It does sound like gummed up carbs or an air leak, but improper throttle linkage synchonization and thermostat operations also affect "sneezing".

 

[rodbolt]

Re: Question for Rodbolt

hello<br /> yep what Osprey and seahorse say.<br /> if it coughs its cause its lean<br /> remove the carbs and carefully dissasemble and clean them. pay attention to the idle fuel jets and the idle air jets. the air/fuel screws just allow more or less of the mix into the carb, they do not control idle air fuel mix. that is controled by the idle fuel and idle air jets. sounds like your getting to much air and not enough fuel

 

[digger63]

Re: Question for Rodbolt

Thanks for the info rodbolt, osprey, and seahorse. Is this something that the average Joe can do or do I need a professional to disassemble and clean the carbs. Osprey, the plugs have been changed, but the ones I took out were really oily looking. They didn't appear to have much buildup on them, but they were black. The mechanic said that the oil pump was set too high and the carbs were not set to factory specs.<br /><br /> Thanks,<br /> <br /> Alan

 

[boatster]

Re: Question for Rodbolt

Cleaning the carbs should be fairly straight forward. You just need to be a little careful not to ding the jets when the bowl is off or hit the floats as they are very fragile. You can then spray some carb cleaner and blow through all the passages as well as use some high compressed air if you have a comressor. Thats been my technique and its always worked for my carbs.