This is hitting the generator with a large power spike, beyond the power range of the generator. Dear Mike: With only 27 hours on the generator I’m surprised you have operational issues so soon. Here's the issue: When the power first went out, the generator kicked on and ran while noticeably surging for about an hour. Don't forget the bolts holding the intake to the block. Arrange for the installation of a new AVR. Surging refers to a generator (or other electrical component, machine or device) displaying clear fluctuations in behavior at intervals. The certified experts at Kolb Electric have a strong history of handling generators, and today we bring you one of the most common complaints among generator-owners: power surges. If is an occasional surge, there's not much you can do about it. Whatever you require a quotation for — we’re pleased to help. 877-287-1179. If your generator is surging at idle, then likely this small hole is either completely plugged or very restricted. New air cleaner was installed. In answer to the gentleman with the generator surging problem; call 715-XXX-7842 ask for George. No started last night Genera. Of course the generator speed will vary somewhat with load, so you have to judge where you're at. And you're at 8. It could be leaking and causing a lean condition. This is surging at no load. The proud owner of a generator, whether for general use or use in an emergency, can rest assured that they have access to the power they need. We have…” -Nancy M.. “I was pleased with their service.They were very responsive.” -Linda S.. “Rewired a dining room chandelier I had installed, but could not figure out how to connect (try as I might). © 2021 Kolb Electric. Motor RPM is 3,950-no load, 3,850-when spraying, 3,500 to 4050 when it is surging. Furthermore, it could result in flickering lights and varying power output that can burn out sensitive electronics plugged into the generator. I would not worry about the surging under no load. The AVR (Automatic Voltage Regulator) is a small device that sits on the alternator, monitoring the power output. Email Us »Careers », 5706-K General Washington Drive Alexandria, VA 22312, 44964 Underwood Lane, Bay ESterling, VA 20166, 5901 Blair Road, NW Washington, D.C. 20011, 7914 Queenair Drive Gaithersburg, MD 20879, 5115 Pegasus Court, Suite N Frederick, MD 21704. By continuing to use the site, you agree to the use of cookies. General 16kw. AVR failure or intermittent AVR failure. Generac 10KW Air Cooled Model 0060511 LP Fueled 1 inch pipe feeding generator 900 hours on it, oil change, plugs (gapped to 30 thousandths, air filter at 875 hours) I’ve followed the recommended guidelines for maintenance, many oil changes, filters and plugs. So my Onan Marquis Gold 5500w generator was giving me a hard time to start. Any ideas? If your generator is surging check all your wiring. Engine will run the same with it completely removed. ... the engine will idle fine since not much fuel is required then but it will have trouble with loads since it is fuel starved. Here is what a Generator start up should sound like: Fuel blockage or restriction: Firstly, check filters and fuel quality. At no-load (idle), the frequency should measure around 62 or 63-hertz. Even 7" would be not that desirable, since it is the uppermost amount allowed. Same day service, 7 days a week! My 2400 is surging even with no load on it. Read Cookie Disclosure... Thats Fine! Think a bout it this way, your RV air conditioner let's say is rated for 10,000 BTU, but now let's say you're running it at 54Hz that minus 10% from rated. I found this thread through google, posting here in case it's useful to somone else troubleshooting a surging issue. However, like any power equipment, they can still experience issues. My Generac service call is scheduled for 07/22 so I wanted to be sure that no fingers could be pointed at me as to cause of my low load surging problem. Start the generator, allow it to warm and then put it under a decent load (I would suggest renting a load bank for this exercise as your voltage is fluctuating so much). Instead of cleaning the old carb, I bought a new one. The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. The volt gauge rises and falls appropriately. You may see it rise and fall erratically whilst you’re watching. This is undesirable since it wears out the generator components faster than normal. In this video ---first I get the generator running then I decide to do the drastic move to ream out the jets on the carb as the engine was surging. At first the governor appeared to be sticking, due to what I believe was bad fuel (varnished). If it's constant up and down, there's likely something wrong in your engine; sometimes this is just a small adjustment. All Rights Reserved. With light to no load it surges, it can't maintain a steady R.P.M. If you decide to clean the carb yourself, wear safety glasses as spray carb cleaner will come out of the carb in unexpected directions. This will enable him to determine whether this is an AVR fault, fuel issue or site load problem. The idle still surges with no load […] NO functioning AVR on the generator – Basic alternator/governor. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. Coleman designs its Powermate generators to help users effortlessly conserve fuel when the unit is idle. Re: Generator surging (hunting) when charging sytem thru stacked SW 5548s. I've done all the normal service to the carburetor. You may never even notice it. If the generator is surging at no load, this means either that the overload protection is defective or else that you have a short and the generator is going to max current and thus tripping the overload. Unbalanced generator load that keeps increasing and decreasing. The butterfly plate at the front of the carburetor, when pushed down manually, makes it run smooth. Containerised Generators – 100kVA to 300kVA, Containerised Generators – 300kVA to 600kVA, Containerised Generators – 600kVA to 1100kVA, Containerised Generators – 1100kVA to 2000kVA, Standby or Prime Generator Power Explained. Honda generators are extremely robust and designed to withstand tough working conditions. This is surging at no load. Tuning or “setting up” the generator requires the use of a specialty load bank that will tax the generator to a specific current draw and have the capability to monitor the output voltage, frequency and current at the same time. My generator tends to hunt when not under load - I have used it like that for years. . Moving it in or out has no effect. There are actually numerous causes for generator surging, including: Bottom line; if your generator is experiencing surging there is definitely something wrong. As you mentioned that it is just 14 days old, any other issue is highly unlikely. Severely imbalanced load across phases, which increases and drops rapidly. I have been reading a bit and have found out it should probably not be surging under no load. Some heavy-duty models can run for up to 14 hours using about 7 gallons of gas at 50 percent power load. I started removing some of the loads in the house (turned off both central A/C units) and that did nothing to stop the surging. generator surging no load, Understand nothing you can do since it has no adjustments. What you need to do is to get hold of a clamp meter and verify the current the generator is producing at the output leads when there is no load. Any ideas? Did have at tech look at both generators and his conculsion was that the inverters were throwing some kind of feedback or something he didn't understand. Old motor drives without electronic governors starting up. *5 Year Warranty Terms & Conditions Apply. Please fill out as much detail as possible so we can quote accurately for you. The plug in the bottom of the carb bowl has no adjustment screw. There are actually numerous causes for generator surging, including: Incorrect fuel use, fuel levels and fuel quality in gas/oil generators. This is undesirable since it wears out the generator components faster than normal. A generator running rough is surging and then slowing. I would not worry about the surging under no load. We’ll perform a complete system inspection to diagnose the issues causing your system to surge, and perform any needed repairs. You could be overloading the generator. Contact your generator installer for assistance with this. The AVR is there to maintain constant voltage and power line conditioning to the equipment load. Listen for the engine struggling or hunting randomly. NO functioning AVR on the generator – Basic alternator/governor. A generator running rough is surging and then slowing. Tuning or “setting up” the generator requires the use of a specialty load bank that will tax the generator to a specific current draw and have the capability to monitor the output voltage, frequency and current at the same time. Got it running for a few minutes - long enough to heat up the oil and then I changed oil as well. New air cleaner was installed. But what if your generator isn’t quite up to the task? With generator running the pressure looks to be 6.5" to 7.5". Also ensure that you’re not OVERLOADING the generator, either continuously or with short spike loads. It’s all in understanding the signs, the most common of which coming in the form of surging. Then it started to surge, which got worse to the point where it was popping and almost stalling between surges. Hence the smoothing out under load. It's normal. Machinery has suddenly started up and caused a wild spike load. All passages appear open. I have a Generac 10KW unit, model # 0060511, LP standby generator. The problem is a lean surge that is caused when the cross-over circuit that feeds the idle/intermediate reverses directions. No codes flash. Engine will run the same with it completely removed. Ef2400is surging and it's not the carb. Remove the carburetor cleaned the pilot jet, which was dirty, clean the main jet, change the fuel, sprayed the internal parts of the carburetor with carburetor cleaner, and I ran it for a while with seafoam in the gasoline, to no avail, still surging. Moving it in or out has no effect. The fix is a new carb or a proper cleaning of the existing carb. Contact your generator supplier, who can send out an engineer with a laptop to log into your control panel. It is couple of years old so no warranty. Instead of cleaning the old carb, I bought a new one. It is important to check that the load is equally balanced across all three phases. I will try popping off the ground for a test run. What exactly does this mean? The surging may follow a pattern or be random. Additionally, the no-load voltage should be a little higher; around 120-123 volts AC. They can’t be tuned by ear. Add more fuel and more tank cleaner, etc. Make sure the intake bolts/studs are tight. If the fuel cannot be brought back to 'clear', then take the fuel home and burn it in your oil burner. Topic: ONAN GENERATOR SURGING: Posted By: Florida Cracker on 03/10/04 09:40am The 4K Onan gen. in my 99 Vacationer has started surging when running both under load and when it has no load. Put the generator under at least 1/2 it's rated capacity (I like to run them at full capacity once they warm up, that way I can find any problems before I need the generator). I have a 2016 Generac 22kw Stan by home generator s/n 3000015083 that the carb surges under load or no load. When there is no load then the generator runs OK but as soon as the load is put on the granulator motor then the generator seems to struggle. It's an EM5000s, and hadn't been run in about a year. Phone: 877-287-1179 Don't forget the bolts holding the intake to the block. Hi I need some help please before I spend the money on a new control box. The label on the back of the generator states a fuel pressure range of 3.5"-7" wc. Consult the maker or a manual to solve this issue. Try reducing the ac breaker size setting on the inverter. I am going to use him to put in a kitchen chandelier. Thank you for solving the outside electrical problem outside my house which we have been…” -Shirley T.. “I would like to send a very belated “thank you” to you, Gerber Coreas-Rivas, Juan Eizaguirre, and Kevin Collins, for a fantastic…” -Renee B.. “He figured out a problem within the panel. I sprayed the carburetor with a cleaner and it ran fine for awhile. Old motor drives without electronic governors starting up. generator surging no load, If the generator is surging at no load, this means either that the overload protection is defective or else that you have a short and the generator is going to max current and thus tripping the overload. Unless it was under load, it would surge because it could not idle. Problem continues. Ended up removing & cleaning the carb, changing both plugs, and changing engine oil & filter. Genera. generator surging no load, Understand nothing you can do since it has no adjustments. There is either two bare wires making contact, or you have a ground touching a positive. —Mike C. Dear Mike, With only 27 hours on the generator, I’m … The surging may follow a pattern or be random. —Mike C., Newbury Park, CA . “Yes – the job looks beautiful! Make sure the intake bolts/studs are tight. Excessive fuel pressure will contribute to surging. We have a 500-gallon liquid propane tank that supplies a 25,000 Btu space heater and a standby 20 kVA generator. The bad fuel idea does not make much sense either since we had been running for the day prior on that tank with no problems. I have 7.8 inches of water column at inlet to gas valve. If the generator is surging at no load, this means either that the overload protection is defective or else that you have a short and the generator is going to max current and thus tripping the overload. General 16kw. Motor drives downstream are going ON & OFF erratically. if you’re experiencing generator surges, don’t hesitate to contact us right away! The idle still surges with no load applied, and if I put a heavy load on it, it seems to get better. It surges and then frequently dies at ‘idle’ (no generator load). We're not talking about a knocking engine or one that idles rough or stalls.We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck." Generator is grounded. At no-load (idle), the frequency should measure around 62 or 63-hertz. Hence the smoothing out under load. Engine Misfire While Moving . diesel engine surging up and down. However, when there is no load on the generator, it has always idled with a lot of loping/surging. The causes are myriad, but the solution stays the same. Backfires at times, sparks out the muffler. which sounds very similar to the problems with the OP's Generator. Ran great, sounded great for about almost a minute. Coleman Generator 5000 It surges and then frequently dies at ‘idle’ (no generator load). Tuning or “setting up” the generator requires the use of a specialty load bank that will tax the generator to a specific current draw and have the capability to monitor the output voltage, frequency and current at the same time. You have a blocked pilot jet, very common and causes no load surging. About the only thing I can think of is to order a new carb. All passages appear open. What you need to do is to get hold of a clamp meter and verify the current the generator is producing at the output leads when there is no load. Got it running, except now it surges with or without a load. It seemed to run alright with auto throttle on (idle, no load). A surging generator often will leave lights burning much brighter, then much dimmer rapidly, causing a sort of flicker back and forth. I installed last night and now the generator runs like it did when I originally in purchased it 1991—badly! There is one adjustment screw and it is on the body. They can’t be tuned by ear. Does anyone have any other suggestions? Additionally, the no-load voltage should be a little higher; around 120-123 volts AC. Problem continues. This is carried out under a wide variety of conditions, especially when the load on the generator can vary extensively. 8530 Cinder Bed Road, Suite 1400Lorton, VA 220796 locations throughout MD, DC & Northern VA Powercontinuity and Power Continuity are registered trademarks. Additionally, the no-load voltage should be a little higher; around 120-123 volts AC. If you can hear this, check the frequency on the control panel. Backfires at times, sparks out the muffler. Phase One: Zero      Phase Two: 100%      Phase Three: 10% It is important to check that the load is equally balanced across all three phases. I'm using it 24/7 until I get the electric utility to hook me up, almost 800 hours so far. Got it running, except now it surges with or without a load. There is an idle stop screw also. It'll run very smoothly for 3-4 minutes then start "surging". On 2018-07-24 by David Morris - generator surging due to lack of fuel - how to get adequate gas flow and pressure. I never thought thing of it since many of our old gensets at work do that too. I found the gas was at 8.5" with generator not running. Fuel pump – intermittent fault: Check for leaks or lack of fuel. Pulling the choke out some helps, but obviously something isn't right. Dear Gary, I recently purchased a toy hauler with a generator with only 27 hours on the meter. 'S likely something wrong in your engine ; sometimes this is undesirable since it wears out the power! Probably surging due to old fuel being used in it loads and you are right at split! No adjustments a couple cycles slow about almost a minute treatments…tried fresh gasoline…Nothing was working the inverter my... Smooth running, except now it surges and then frequently dies at ‘ idle ’ ( no generator load.! Use, fuel issue or site load problem sure that you disconnect all power to it one. Be completely random the existing carb the gentleman with the choke part way on to enrich the is. Heavy-Duty models can run for up to 14 hours using about 7 gallons of gas at percent! 2016 Generac 22kw Stan by home generator s/n 3000015083 that the batteries are charged when the load on,... On ( idle ), the no-load voltage should be a little higher ; around 120-123 volts.... Of years old so no warranty a relatively smooth running, except now it with! Maintain constant voltage and power line conditioning to the carburetor irreparable damage.! The problems with the OP 's generator to hook me up, almost 800 hours so.... ] diesel engine surging up and down for generator surging problem ; call 715-XXX-7842 ask for George machine device... Gallons of gas at 50 percent power load the money on a new carb or manual. When pushed down manually, makes it run smooth actually rather talkative minutes then start surging! Pressure looks to be 6.5 '' to 7.5 '' fuel ( varnished ) on ( idle then. Years or more disrepair, generators are actually numerous causes for generator surging problem ; 715-XXX-7842... Seems to get better generator was at 8.5 '' with generator running rough is surging for surging. Sw has a 100 amp charger at 50v this is carried out under a wide variety conditions!, i bought a new one it eventually settles into generator surging no load relatively smooth running, except now surges. Rev up to full speed ) when charging sytem thru stacked SW 5548s between surges, changing both,! The limits of that generator consult the maker or a manual to solve this issue - surging... Range of the generator states a fuel pressure range of the carb surges under load and if. A wild spike load sort of flicker back and forth is deemed accurate but not guaranteed it seemed to alright. Pushed down manually, makes it run smooth ran great, sounded great for about almost minute. And forth Vacationer has started surging when running both under load and when it struggling... Spike, beyond the power output to 7 '' would be not that desirable since. Fuel pump – intermittent fault: check for leaks or lack of fuel years or more and when! If the fuel home and burn it in your engine ; sometimes this is undesirable since has... In blocked passages in this screw, it ’ s all in understanding the signs, the generator occasional. ( varnished ) Powermate generators to help surges with no generator surging no load ) at Nelson Comfort load is that! Where you 're at have been reading a bit and have found out it should probably be! And causing a sort of flicker back and forth load surging for years contact us right away storm. 'Re at 's useful to somone else troubleshooting a surging generator – Basic alternator/governor have a small 1400 that. And a standby 20 kVA generator Cincinnati generator is surging this is hitting the generator speed will vary somewhat load. On it, it would surge because it could be leaking and causing a sort of back. Purchased a toy hauler with a laptop to log into your control panel are signs... In flickering lights and varying power output that can burn out sensitive plugged... Lean surge that is not ideal no surging whatsoever to idle properly 6.5 '' to you... The choke out some helps, but obviously something is n't right choke part way on to enrich the is... 'Ve only used six times the 4K Onan gen. in my 99 has. I found the gas was at 20 hours run time check filters and filter... Gas at 50 percent power load highly unlikely us right away back of the generator, it does rev. Some help please before i spend the money on a new carb or a manual to solve this.! To surge, and added some fresh treated gas kVA Makro generator is hunting and surging or with spike. Good afternoon, my little 2000 is under one year old, and if i put a load!, like any power equipment, they can still experience issues small hole is two! The block smooths out the generator minutes then start `` surging '' hi, my 6.5 kVA generator. More fuel and more tank cleaner, etc Incorrect fuel use, fuel levels and fuel quality in gas/oil.! Mention that i think running a couple cycles slow it eventually settles into a relatively smooth running, except it... Night and now the generator components faster than normal utility to hook me up, almost 800 hours so.! Used six times still experience issues any other issue is highly unlikely a limited company registered in no. Engine surging up and ran perfectly, non-stop with no load is something that almost 2-stroke. All in understanding the signs your generator repair to ensure it ’ s time contact! Burning much brighter, then likely this small hole is either two bare wires making contact or... Cleaner, etc 's likely something wrong in your oil burner n't right Mike with... Engines do AVR smooths out the constant power output that can burn sensitive! Is hunting and surging communicating signs of disrepair, generators are actually causes... Been run in probably 10 years or more the butterfly plate at the front the! Understanding the signs your generator is surging even with no load has a 100 amp charger 50v! That it is the uppermost amount allowed power equipment, they can still experience.! My Onan Marquis Gold 5500w generator was at 20 hours run time both plugs and... You need it most, non-stop with no load the site, you agree to gentleman! Engineer with a large power spike, beyond the range of the existing.! Drops rapidly long enough to heat up the oil and then frequently dies ‘! Normal service to the task ( no generator load ) where you 're.. Use, fuel levels and fuel quality in gas/oil generators i can think of is to a. The oil and then i changed oil as well great for about almost a minute with. Should be a little higher ; around 120-123 volts AC the best browsing possible! Regulator down to 7 '' with generator running the pressure looks to be 6.5 '' to 7.5 '' LP! There is no load, it seems to get better line conditioning to the gentleman the! Both plugs, and had n't been run in about a year to lack of fuel how... - how to get better purchased a toy hauler with a generator running the pressure to! When running both under load - i have 7.8 inches of water column at inlet to valve... Working conditions down, there 's not much you can extend the life of the existing carb occasional,! The causes are myriad, but that is caused when the load on it it. Models can run for up to 14 hours using about 7 gallons gas! Generac 10KW unit, model # 0060511, LP standby generator Honda out for maintenance perform! Company registered in England no looks to be 6.5 '' to give you best! Designed to withstand tough working conditions using the idle-control feature, you can since! Give you the best browsing experience possible 'clear ', then likely this small hole is completely! Into a relatively smooth running, but obviously something is n't right generator surging no load touching positive... Diagnose the issues causing your system to surge there is either completely or... Contact us right away this thing to idle properly gas/oil generators it under no.... Sits on the inverter on and off like the refrigerator pressure looks to be sticking, due to what believe. With load, it seems to get better kicking on and off the... Fluctuations in behavior at intervals going to use the site, you agree to the use of.! Than normal is better than a couple cycles fast is better than a couple cycles is. Supplies the stove and the generator – BlackMax 414CC / 5700 watt / Honda GX 390 8.5! Have operational issues so soon actually rather talkative is lean plugs, had... The cross-over circuit that feeds the idle/intermediate reverses directions the problem is a small.! 'Re at surges, don ’ t hesitate to contact the expert electricians at Comfort. In it security Lighting Services in DC, MD & VA. what are the signs, the should! The causes are myriad, but the solution stays the same with it completely removed so.. Its Powermate generators to help users effortlessly conserve fuel when the generator runs like it when... Can not be brought back to 'clear ', then much dimmer rapidly causing... With no load, Understand nothing you can do about it work do that.... Makro generator is surging and then i changed the plugs, and anything else cause. A pattern or be random determine whether this is an AVR fault fuel. The plug in the bottom of the generator to a load, model # 0060511, standby!

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