This is on a generator. The engine has a rough idle and vibrates. Is there such a thing as "timing" on an engine like this? Would it be a carb issue? It starts right up and when I slide the lever from the choke position to run position it starts to stall out about 1/4 of the way over. When I move it back toward the choke position it regains its momentum. Any general thoughts? I can give more details if you need them, but just maybe I'm missing something obvious.
rough idle and engine stalls when moving lever from choke to run position; B&S 16.50 series
- Thread starter kelazier
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Time for a carburetor cleaning, choking richens the fuel mixture, when you take the choke off, it stalls out due to crap in the carb blocking fuel
Get your carby jet cleaners out and clean the main jet as well as others. When you put the genset away ensure you turn the fuel off and run it out of fuel so varnish can't build up in the carby.
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Unless the carburetor is properly cleaned and rebuilt those so called jet cleaners will only mask the problems. Many of the 1650 series B&S uses a Nikki carburetor; therefore, once they are opened up new gaskets are needed. Even the main jet will need a new o-ring.
Running the engine until all the fuel is supposedly used up in the carburetor doesn't guarantee that the carburetor won't have problems from residual fuel left in the carburetor.
Running the engine until all the fuel is supposedly used up in the carburetor doesn't guarantee that the carburetor won't have problems from residual fuel left in the carburetor.
Turning the fuel off and running it out of fuel lowers the fuel level so the main jet isn't sitting in fuel for 12 months at a time for the varnish to deposit. Turning the fuel off stops the fuel from continuously topping up for 12 months as the fuel slowly evaporates leaving the varnish/impurities behind, concentrating them in the carby. Leaving the fuel on creates a lot of money for folks who charge to get gensets going every year.
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Some generators do need to be started up every few months anyway to keep the rotors fully magnetize.
As a repair only shop, repairs is how we stay in business. If no repairs then we go out of business or try to make it as I have the last three months of paying overhead and losing money. Matter of fact my bank account for the business is now under $400 even though I have $33,000 in parts in the warehouse. I currently don't have medical insurance but my doctor is still insisting on me coming to his office for office visit and tests which I am unable to do so my medical problems just have to wait.
And yes I charge to get these carburetors clean but I consider $25-$50 in labor is well worth it considering some these carburetor are a couple hundred dollars. Matter I doing a Generac genset now that carburetor [$130] that having rework the needle seat due water damage. Even Generac charges $60 for the carburetor repair kit. But I am using 82 degree countersink to straighten out the needle seat problem. Now if you think a shop like charging $50 for two hours of work is making a killing then so it be. Even the electricity and hand toolsI use cost anyone doing the work. Besides the customer is paying for things to be do right and not half a$$ done.
Now of course some think we make tons of money every year, well I don't. When I retire in a few years then everyone can go to those shops that have so-call mechanics that can't even find a bad spark plug.
Yes this does occur but even when ran supposedly dry there is still fuel in the idle and main jet passages as it is impossible to get every bit of fuel out. It is the same when I clean a carburetor as some water/soap is left behind which why I use a non-residual soap. I haven't use either the spray or dip carburetor cleaner since 2014 on any carburetor.
As a repair only shop, repairs is how we stay in business. If no repairs then we go out of business or try to make it as I have the last three months of paying overhead and losing money. Matter of fact my bank account for the business is now under $400 even though I have $33,000 in parts in the warehouse. I currently don't have medical insurance but my doctor is still insisting on me coming to his office for office visit and tests which I am unable to do so my medical problems just have to wait.
And yes I charge to get these carburetors clean but I consider $25-$50 in labor is well worth it considering some these carburetor are a couple hundred dollars. Matter I doing a Generac genset now that carburetor [$130] that having rework the needle seat due water damage. Even Generac charges $60 for the carburetor repair kit. But I am using 82 degree countersink to straighten out the needle seat problem. Now if you think a shop like charging $50 for two hours of work is making a killing then so it be. Even the electricity and hand toolsI use cost anyone doing the work. Besides the customer is paying for things to be do right and not half a$$ done.
Now of course some think we make tons of money every year, well I don't. When I retire in a few years then everyone can go to those shops that have so-call mechanics that can't even find a bad spark plug.
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thank you
thank you
thank you