You bloody legend! I had pulled apart my carby and cleaned it all up, but when i reinstalled it the surging problem was still there. So i watched your video and (at the 3.30 minute mark) you showed a needle clearing a small hole in plastic part. I remembered looking down there and not seeing any light so thought bottom was solid. I went back to my problem carby and cleaned out that hole. The engine started first pull and runs smooth as silk. This has been a problem on this machine for 10 years and I've only just got around to fixing it. Thank you, i couldn't have done it without you, your video is very much appreciated.
I have learned a lot about these carbs ...I have one like it on my Greyhound 11 H.P that I may have to clean someday Works a lot better with the air filter on
Sometimes the surging come from the governor and the easy way to fix that is replace the spring in the throttle and install a straight wire in its place also make sure to tighten the throttle bar until it barely moves so the governor can't move it!
I do understand how a governor works ..I have seen old tractors surging from the governor...The problem with this carburetor is what I showed ..The jets need enlarged because the factory has to meet all the EPA regs. and you end up with a crappy running engine starving for fuel
In my case. Surging Honda GX 390 on a generator was surging only under 1/2 tank of gas. Tried solving it with new or no gas cap, new fuel hoses, fuel filter, petcock, flushed gas tank, new Genuine Honda carb and even used aviation fuel. Still it would starve out near 1/4 tank and would only run while spraying starting fluid in the carb. Surging = Fuel Starvation, especially with less than half tank of fuel in my case, even when it was new. A generator runs at high speeds all the time requiring the highest of volume of fuel in the line at all times. Generators are designed to be low profile and an inherent flaw is that the fuel tank is (TOO LOW) just slightly above the carb fuel inlet for gravity feed through a hose. At high speeds and especially with little fuel in the tank causes a weak flow to the fuel inlet causing starvation/surging. MY SOLUTION: I discovered that by raising the entire fuel tank by 8" gave me MUCH better fuel flow down to the carb and the surging went away even with almost no fuel left in the tank. You can definitely see the difference (before and after) with a see-thru clear fuel filter which should always be at least 1/2 full during operation on a high speed motor/generator. Another mistake I made was storing Ethanol fuel for more than one season in my shed. The stuff goes bad and causes havoc on small engines. Periodically check the color of the stored fuel in a glass jar. It should be clear. If it is golden/urine colored, DONT USE IT in a small engine.. Car engines don't seem to have a problem with the aged fuel. I had about 20 gallons of yellow colored fuel and added a few gallons at a time to an almost full tank of gas in my car and it burned it with no problem. I hope this helps somebody as I almost gave up and it cost me $ and lots of time, but I won and learned a valuable lesson that nobody ever suggested to try.
You bloody legend!
I had pulled apart my carby and cleaned it all up, but when i reinstalled it the surging problem was still there. So i watched your video and (at the 3.30 minute mark) you showed a needle clearing a small hole in plastic part. I remembered looking down there and not seeing any light so thought bottom was solid. I went back to my problem carby and cleaned out that hole. The engine started first pull and runs smooth as silk. This has been a problem on this machine for 10 years and I've only just got around to fixing it. Thank you, i couldn't have done it without you, your video is very much appreciated.
Glad I could help Mine runs great now with plenty of power
It doesn't get much better than that Jim. You are right, the surge usually will disappear with a load on it. Good job.
I did the best I could ,,It does idle well at slow speed now ...
Try some sta bil fast fix in A bottle remember to shake it up really good before using it to.
Nice job it is running really good
THANKS !!!
I think you got it. These are surgey carbs. The air filter does help to slow things down a bit.
I have learned a lot about these carbs ...I have one like it on my Greyhound 11 H.P that I may have to clean someday Works a lot better with the air filter on
Sounds good, thanks for sharing.
THANKS !!!
Thank you for your video. !!! :) Helpful!
THANKS for Watching !!!
very nice job.
THANKS !!!
Sometimes the surging come from the governor and the easy way to fix that is replace the spring in the throttle and install a straight wire in its place also make sure to tighten the throttle bar until it barely moves so the governor can't move it!
I do understand how a governor works ..I have seen old tractors surging from the governor...The problem with this carburetor is what I showed ..The jets need enlarged because the factory has to meet all the EPA regs. and you end up with a crappy running engine starving for fuel
That's as good as it gets Mate!! Find a wheelchair and mount it up!!☺
It would be fun to put it on one of those mobility scooters..But I could still get in trouble breaking the local speed limit !!!
That was a nice video......Thanks!
Thanks for Watching !!!
I'm subscribed!
THANKS !!! I have many playlists on my channel and have made a lot of projects
I have a GX 160, rebuilt the carb and it still surges only at High RPM, and has little power. Need to use a quarter choke for it to run smooth.
I would make the main fuel jet one size bigger
The Amazon carbs may be wrong for your engine. The same carb goes on the GX240, GX270, GX320 and GX390 but all require different jet sizes.
390 carb has bigger diameter than 270/240
They’re not the same
In my case. Surging Honda GX 390 on a generator was surging only under 1/2 tank of gas. Tried solving it with new or no gas cap, new fuel hoses, fuel filter, petcock, flushed gas tank, new Genuine Honda carb and even used aviation fuel. Still it would starve out near 1/4 tank and would only run while spraying starting fluid in the carb.
Surging = Fuel Starvation, especially with less than half tank of fuel in my case, even when it was new. A generator runs at high speeds all the time requiring the highest of volume of fuel in the line at all times.
Generators are designed to be low profile and an inherent flaw is that the fuel tank is (TOO LOW) just slightly above the carb fuel inlet for gravity feed through a hose. At high speeds and especially with little fuel in the tank causes a weak flow to the fuel inlet causing starvation/surging.
MY SOLUTION:
I discovered that by raising the entire fuel tank by 8" gave me MUCH better fuel flow down to the carb and the surging went away even with almost no fuel left in the tank. You can definitely see the difference (before and after) with a see-thru clear fuel filter which should always be at least 1/2 full during operation on a high speed motor/generator.
Another mistake I made was storing Ethanol fuel for more than one season in my shed. The stuff goes bad and causes havoc on small engines. Periodically check the color of the stored fuel in a glass jar. It should be clear. If it is golden/urine colored, DONT USE IT in a small engine.. Car engines don't seem to have a problem with the aged fuel. I had about 20 gallons of yellow colored fuel and added a few gallons at a time to an almost full tank of gas in my car and it burned it with no problem.
I hope this helps somebody as I almost gave up and it cost me $ and lots of time, but I won and learned a valuable lesson that nobody ever suggested to try.
Why caborater missing not good star ingine
bradher. enggine gx 200 carburetore if it is just Alive lf it is opened ,it is dead.i indonesian
HERE IS A GREAT VIDEO ON THESE CARBURETORS ua-cam.com/video/HaMqiHvWGec/v-deo.html&index=100&list=WL