*100% best **Generater.Systems** I have used. A test for hurricane prep here in Louisiana: three AC units, 5000, 5000 & 8000, 3 fridges, 2 device power setups, 4 flat screens....AND I had 40% of the power meter to spare.*

After a couple hours chasing a starting problem I watched this video. I had no clue that a low RV fuel level could keep the generator from starting, but it did. I filled the tank and the generator fired right up. THANK YOU!!!

Followed your advice and changed the fuel pump and filter today, took me exactly one hour. Was a bit of a challenge at first but if I had to do it again it would be a cinch to do. The generator has been starting quickly and works better than ever. Thank you for this video, it really helped me out!

Excellent troubleshooting, suggestions, and cautions. Your video definitely gave me some insight into the dying fuel pump problem and led to a relatively simple repair. Saved some money and made Momma happy in the process. Win-win. Guys like you help guys like me look like heroes! Keep up the great work.

Nice of you to make this video. Not many how-to's on fuel filter change for Gennys. It was well done - detailed, talked us through the process, showed the parts, very much appreciated, many thanks!!

Thank you for your work. You have inspired me to take on the fuel pump replacement project, and IM no mechanic. Your step by step and pointers are very helpful. Thanks again.

Tito, my generator stopped running the other day. I watched a really good video on changing out the fuel pump and had my hat all set to do just that. I always watch more than one video on whatever I'm going to repair and stumbled on yours. Went out to my R.V. and sure enough my fuel was take was just below 1/4. Took it out of storage, filled the tank, started the generator. It ran fine. Thank you for saving me the trouble of replacing my perfectly good fuel pump with a new one.

Excellent advise. First time I've heard about fuel level impact to the generator. Thanks

Thank you. 5 years after you made this you helped me immensely!

Great video, and yes, it worked. I had just the problem you described. Generator ran fine for about 20-30 minutes then stopped. Fuel was not getting through. Ordered the parts, followed your video, and it runs perfectly now. Thanks Tito!

I love your diy’s ..... their very easy to follow and well described....a home run! One addition to your check the gas tank gauge suggestion...while doing this make sure that the vehicle is level .... i learned this the hard way ....as soon as i leveled the coach all was o.k. and the generator ran as it should...

Thank you!! for you suggestion of low gas in main tank. Filled up tank and generator is all happy again.

Thanks for this video!! Been having the same issue for a few years and thought it was the fuel line too. Great vid!!!

thank you Tito for your video on how to fix a generator I did what you said on mine cuz I was having issues with it and I was able to get it running and started so thanks for all your help in making this video

I know this is an older post but I was having problems keeping my Generator running, I was just about to get "stuck-in" starting with all the usual checks. I decided to watch this video first and I had forgotten about ensuring the main RV gas tank was above 1/4 full. Off to the gas station, fill up the gas tank. Arrive home try the generator , Runs Perfect;y. Just goes to show you Can teach and Old Dog new tricks. Thanks so much saving me hours of trouble shooting.

Thanks for the suggestions you have contributed here.

I have this problem now and am giving this a shot. Thanks for the tips!

My Onan had a dieing problem much like you described here. I changed the air filter and and that fixed my issue.

Thank you very much. My Onan 5500 wouldn't start and I suspected it was the fuel pump. Your video was perfect in showing me how to verify it.

I love your stuff. I got in a pinch today and mine wasn't pumping. You can actually tap it the pump with a wrench, not too hard and you are back in business. That tip came from Cummins. I tried it and it worked.

this looks much easier than anticipated. thanks .

Thankyou Brian for once again providing insight into a solution for a perplexing problem that obviously many of us have experienced. I'm assuming what we see on the video is a re-creation of the steps that finally led to the discovery of what this fault was with your fuel pump : It cuts off but only when it reaches a temperature it doesn't like, but after a cool down period, it will work again until the temp rises again. I too got fuel running through the initial "disconnected tube into the bucket" when the pump was in it's "cool" state. What I didn't realize until later was that I needed to re-run the tube/bucket test just after the genset shuts down after running fine for several minutes. Re-test results: no fuel flow! Let system cool for a couple hours (for me anyway as I live in Phoenix) then I re-ran the tube/bucket test again and the fuel was flowing. The Genset started right up but quit after a few minutes (as I expected it would after re-heating). You may want to edit the video (the typed popup verbiage?) for future viewers to see and comprehend the whole procedure and what the pump is doing under different conditions. To the viewers who are going to do these tests : Make sure nothing distracts you while you you have the fuel line disconnected and feeding a catch receptacle and activating the stop/prime/start button, especially once the genset and exhaust pipes, etc are HOT. Take safety precautions - no loved ones (inquisitive pets included) near, position yourself for quick retreat, possibly have fire extinguisher ready, possibly an observer to call 911 if an emergency occurs that has your focus. And viewers - it's possible that any complex "system" can be affected by more than one piece of the system.

Your video was great. I followed the instructions and got the fuel pump and filter changed without too much difficulty. Unfortunately, after replacement, the generator was still starved for fuel. I actually could feel the pump working but no fuel was being delivered to the carb. I took it all down again, only to discover a frayed fuel line in a location between my generator cubby and the onan shroud. After replacing this fuel line, problem solved. Lesson: check the fuel lines too. Thanks for your content.

Thank you for the hard work on your channel my bud and see you soon.

Had a surging problem, was about to do your fuel test and noticed the hose clamp was very loose. Tightened it, problem solved! Thanks

Thanks for your informative video, it was a big help.

I had a similar problem with my Onan 2800. The fuel pump fails from either old gas sitting in it, or from the heat of the generator. After the second failure, I decided to mount the new fuel pump underneath my RV, and bypassed the old location with a hose. I also added a power cutoff switch for the fuel pump in the generator compartment. If I'm not going to run the genny for a while, I turn it on and then cut the power to the fuel pump and let the generator run all the gas that is left until it dies. Then I drain the carb with the screw under the bowl. So far this setup has been working well for more than 3 years.

Thanks David Alexander for the great tip! I totally forgot that the stop button also doubles as a prime button. That is certainly a better way to do it.

Thanks for the tip, our generator is shutting down as well. Will definitely test this out :)

Brian, Thank you again for your wonderful guidance. Not sure if I shared it, but I was having issues with my gen set and had forgotten the filter maintenance intervals which likely caused issues with my pump. I first replaced the filter and same symptoms persisted. So I had to endeavor to replace the fuel pump as you did. What do you know, it works like new now. Your video was a big part of my courage to take on the task.

Good tips for good maintenance in generators

Great tip Tito. Tanks!

Trailer is a 2008 toy hauler with a fuel station. My Onan 4KY would run 10-20 minutes and starve out of fuel. Drained and flushed fuel tank, needed a new fill neck hose. Still died after running a short time. Was going to take it to a service shop, but saw on your video that it looked pretty easy. Ordered a new fuel pump, fuel filter and air cleaner through Amazon. It was fairly easy to take out and replace, but a bit difficult to get the circuit board and related stuff back in. Note: I have a long run of 30 feet of fuel line from the tank to the generator and needed to put a manual pump on the line to get fuel up to the new pump as I replaced a good part of the fuel line as well and the electric pump could not draw the fuel through the long empty line.. Also the circuit breaker on the generator itself popped and I was getting no juice after I got it running. Remembered seeing another KZfaq piece about the breaker on the side on the unit and reset it to success. Lastly you do not need to crank the motor to check the fuel pump. Just press and hold the PRIME function on the start switch and the fuel pump will run if okay, or not if bad.

Thanks! I'm having generator issues now, so I'll check the fuel line thing first.

We have used the kzfaq.infoUgkxOTeIs0vv4_9B5hsmnLsk9r930uDQLu_Y for probably 30 hours with our camper and it’s been great! The noise level is really only noticeable when running the AC and other appliances like the microwave, hair dryer, or coffee pot. It’s not huge like other ones and it has wheels so even at 90lbs, I can move it!

Great tip, thank you. I will be tackling mine this weekend...

Thanks! Great video and very helpful!

Thank you! This helped me diagnose what I believe is the problem with my generator not starting. Should know more in a couple of days once the fuel filter and pump come in from Amazon.

Thanks for this. I was changing my fuel pump out , and lost track of where one of the wires went that could have easily gone to either ground or v+ .. was able to see the connection at 8:13 in your video.

Thanks used this test after watching video. I'm still getting a crank no start, but at least I know now that its getting fuel and not a fuel pump issue.

Good Job thanks we have this issue now so I will be following your tutorial :0)

I know that this is an old video, but wanted to add a couple of suggestions to your excellent video. Removing the fuel line and running the pump is the definitive test, but as a preliminary test if you don’t want gas to be pumped into a bucket, you can just hold the button in the down direction and listening for the clicking of the pump as it primes. When it is pumping it clicks. When it doesn’t click it isn’t pumping. If it isn’t clicking then you can remove the fuel line to look for gas. One other tip for those living in California is that a replacement fuel pump cannot be shipped into California. The crazy reason seems to be that it contains chromium. On the other hand this can be purchased at a lower cost on eBay and with free shipping.

I believe the reason the 1/4 full tank need is safety in addition to the dip tube (pickup tube) being only so long. In addition to being on your dash(fuel level) it leaves enough gas to get to a gas station in emergency situations (you need your RV moving more than that air conditioner). Hope that helps clear some things up.

I had a fuel pump that passed this test. I tried everything so I took it to a specialist. The fuel pump was bad and had to be replaced! It ran great after that!

Great tutorial video!

EXCELLENT Video.. I have a NEW RV Toy hauler - 20 Gallon gasoline tank and this is the problem I've had for 2 months now. It would run for about 20 minutes or so then start oscillating and then shut off. I initially saw 3 flashes then 6 flashes on the generator switch button, research showed me that it was a fule issue. I have somewhat sound mechanical skills and understand how things work. Thinking NAW, it couldn't be a bad fuel pump this is a NEW RV. I took it back to the dealer for this and a few other issues before my 45 day adventure and supposedly they "Reset the generator back to factory specs." I ran it at the dealer for 30 minutes under full load. Bingo, I'm happy. So after 3 weeks at the dealer I get this back home happy as a lark until running this for 42 mins 12 seconds. It started oscillating again and shut off. OMG i'm livid.. Keep in mind that I haven't touch ANYTHING on this generator at this point, so now I'm wondering what needed to be reset back to factory specs. With that said, I remove the inlet hose to the carb and I'm getting a nice stream of fuel out of the same hose you showed in your troubleshooting steps. Heck, I only have 12 hours on this generator so "logically" I thought it was sucking air from somewhere. 1. I cut the hose and put a short hose in a full 5 gallon gas can and clear see through fuel filter on the inlet side of the fuel pump and another hose into the carburetor inlet. It immediately filled the clear fuel filter and ran like a champ for well over an hour under full load. No problems. Put it back together and 20 minutes later it oscillated and shut down. All the rubber fuel lines were REALLY hot the way they have them routed. To me, I was SO sure it was a vapor lock of some sorts or 2, there was somewhere it was sucking air. 2. Rather than try to find out where this was sucking air, I isolated the OEM fuel line by buying and running a NEW 30ft fuel grade rubber hose 5/16 hose, some clamps and a see through fuel filter inline and it ran for a LONG time, well over an hour. NOW, I thought, there was an issue with the OEM fuel hose from the tank *in the back of the toy hauler*. Had my friend assist dropping the 20 gallon tank down to see things and low and behold, that the aluminum OEM nipple where the hose connected onto the 90 angle that screwed into the tank was cross threaded. ** by the way there was clear 5/16 solid rubber tube from the tank side of the nipple all the way to the bottom of the tank so that cleared up the theory of low fuel. ** Gas guage showed almost 1/2 full. wow.. so, we replaced this nipple with a brass one, tested the line again and got good fuel flow. AHH HA.. we thought we had it. It ran for over an hour on FULL Load without any issues. Then all of a sudden we saw that the clear fuel filter had been sucked dry and there wasn't hardly any fuel coming from the "TANK" side through the filter.. With that said, we put a volt meter on the solenoid under the fuel bowl and cranked the motor and I got 11.45 DC volts, EXACTLY what is expected and ZERO fuel flow. So after watching your video as well as a few others I determined that it MUST be a faulting fuel pump. I know, it's still under warranty but when I called the dealership they asked me to bring in the RV again to diagnos it, get approval to replace the part, about a week to get the part then another 2 weeks to actually replace it and test it again.. Needless to say, this REALLY agitated me to no end. So with that said, I just ordered a replacement fuel pump and filter on my own and it's expected to arrive in 2 days. I'll replace this and see if this fixes the problem (which I'm ALMOST sure it will). If it does, I know that the dealer will tell me to pack sand that I just voided the warranty but this RV and other things has been planned for a 14,000 mile motorcycle trip for 2 years and I can't deter this trip any longer. Time is of the essence.. I want to thank you for sharing your video, it inspired me to just buy the damn fuel pump.. Jerry

Also check your oil level. Newer Onan's are set to shut down or not start with low oil.

Very Good Video, I would also add a inline fuel filter under the vehicle before the fuel pump and filter, it will protect the pump and keep the hard to reach filter clean, they are easy to install, cheap to replace and good insurance.........

Thank so much that is a good job , I loved

It's also a good idea to throw in new fuel lines while your in there as they can cause a problem from age. I'm about to tackle installing a new magneto in my Onan 4ky to get it to run longer than 5 minutes.

Great Video!

Related problem: My sisters class-C ran a long rubber fuel line from top of tank up to the generator fuel pump. Mice had chewed holes in the fuel line back by the tank so generator would start but start sucking air and stall. I found that by hooking up a temporary 1/4 piece of fuel line from fuel pump (under generator) and into a full gas can. Ran flawless so ran a new fuel line back to tank. Thanks for your video.

Thanks for your excellent video and for this valuable info. We are newbies to motorhoming and are learning all we can from all the great Utube videos. We bought a 98 Bounder to start with. We love it so far, but we are troubleshooting our Onan 4000 Genset right now. Our problem is the same as you describe. It ran perfectly for one month then started to shut off after a few minutes or even up to 30 minutes with a load on it. Several tech guys have checked it and each has had a different idea of what's wrong. The latest one says that there is a safety switch which protects the gen from overheating by turning it off in the case that it does overheat. That switch commonly wears out with time and prevents the gen from running. He says that he will find that switch and disconnect it see if he problem dissappears. He is so busy that he can't see our rv for a week. I would like to do this test myself. Do you know what switch he's talking about and how to locate it?

Thanks so much, love your channel. I just bought my first Four Winds (used) so I am really learning from you.

Thanks for the informative video, Tito ! I followed your suggestions & put in a new fuel pump & filter, but my Onan STILL cuts out after 10 to 15 min of solid running (no surging). I checked the new fuel pump & it shoots out a steady stream. I'm embarrassed to admit I DIDNT check the old fuel pump for gas flow. That said, what do you suggest trying next for my 'cut out after 15 min' problem ?! Thanks!

Thanks, this helped me a lot.

Great video, I have long suffered the same problem with my Onan Marquis 5500 and had tried this same test but ruled out the fuel pump because there was a steady stream of fuel. However, I just came to the conclusion last night that it is in fact an intermittent fuel pump. An even simpler and more definitive test that I used...Run the generator until it dies, place a container under the carb and crack the float bowl drain screw (has a spring on it, located just below the altitude compensator knob on the float bowl). If you get just a drip of fuel and then nothing, you have a fuel supply issue....likely your fuel pump. If you get more than a drip (about a cup) of fuel out, it's probably not your fuel pump. If the float bowl was dry, leaving the drain screw open, hold the stop button down > 3 secs (prime), if the pump is working and there are no obstructions you would normally get fuel running out the float bowl drain but if your float bowl was dry in the previous step, you will likely get nothing demonstrating that your pump is either not working or not getting fuel. Wait 10 minutes (just as you found your gen would restart after 5-10 min of down time) then with the float bowl drain still open, hold down the stop button again > 3 secs (prime) to operate the fuel pump. You will likely hear the pump chugging and you should also get fuel running out of the float bowl drain. This will rule out a tank, line, or filter issue. To rule out a possible controller issue, in that 5-10 minute period when the pump isn't working, disconnect the pump wires and verify that the wires to the fuel pump have power. While holding the stop button (prime) check for voltage at the connector on the white wire (on the controller side) then test for resistance to ground on the black wire (again on the controller side), it should be near zero. If all is good there, then you know the pump is getting power and hopefully feel confident about dropping CDN$160 on a new pump. Don't forget to close the drain screw.

Good stuff, thanks!

I followed your instructions. Worked great! However my new pump is pushing air but no fuel is coming out. Any idea why I can't get it to pull fuel

Excellent. Thanks!

Thank you very much, your video was helpful, just one thing..... more details!!.... thanks and hugs

Does the rule of "at least 1/4 tank of gas" apply only to motor homes? My bumper pull toy hauler has an on board Onan 2800 and a 30 gallon tank. I can't find anything that refers to this rule in my situation. What causes the below 1/4 tank cutoff, a sensor in the tank? Thanks for your videos.

Thank you. Your a big help

Super helpful thanks you so much

Thanks Tito, well done. It amazes me how someone can put a thumbs down on a video like this. It can only be from ill people within the same category. Thanks for your time, effort and information. Well put 👍👍

You can pull a code from a Onan generator by pressing the off button on the generator 3 times Quickly then a momentary pause, followed by one more press of the off button. This will flash a two digit code, just count the flashes. No fuel is usually a code 36. Three flashes followed by 6 flashes. You can look up the codes in your owners manual or online.

Thanks good info.

have you had issues with it maintaining the correct voltage, and how best to set the governor? are the springs around the choke replaceable?

Hi I have a Onan 4000 on my toy hauler it sat about a year. I drained fuel installed two brand new batteries but when I go to start its as if there is no power getting to unit to start and suggestions

Just a quick tip, you dont need to crank the engine at all just hold down the prime/stop and it will pump fuel to test the pump

hi tito, i like your videos very much, i would like to know something, while i am driving it is possible to use electricity from the solar panel or from the generator, i mean can my son watch tv while i travel on the route?, thanks, and i hope your answer .

Love the detail in these videos!! Thank you. I have noticed that the Fuel Filter does not screw into the fuel pump completely. It looks like there is still 1/4" of the fuel filter thread still showing. So this is ok, correct Brian?

hi. i use to have this problem but now the generator won't start and ther is fule coming out from the air filter. can you give me a tip to what seems to be the problem

I had same symptoms, but I would never have thought it was the fuel pump. After watching this video several times and reading the comments, I ordered a fuel pump/filter from Amazon and replaced the original one. (Getting that bundle of wires back in place under the electrical control unit was the hardest part.) Cranked it a few seconds and it started and worked great!!! No one has mentioned what actually failed in the fuel pump. Varnish? Electrical? I think I'll try to disassemble mine and see if I see anything suspicious...

Thank you for the video. My generator is giving me the over crank code. How can I fix this?

Question: right where the start switch is I get 3 blinking red light it is for service. My question is do the 3 blinking light go away when you do an oil change or how does it go away

Hi Brian, I did your test and the gas is flowing like in your video, so i assume the fuel pump and filter is OK, but still the generator does not stay ON, any other ideas that i can try? fuel is fine, oil is fine, what else can I check? thanks for your help. ( by the way is there a technique for loosing those screews? the one that holds the pump? is very hard and i don't want to strip the screw)

Can you turn the battery switch off to kill the power? Thanks good video

I. Have an Onan Generator in my 2005 Rialta. Model number 3KVC83C. It starts fine, but cuts out in a few seconds. Should I first start with replacing the Fuel Filter? If that doesn’t help, next would you suggest Fuel Pump? I would think that fuel lines are ok, since it starts right up?

FYI, I relocated the fuel pump and filter to a spot under my Toy Hauler, Thinking that it might run and not stop pumping fuel if it was in a cooler location, the old fuel pump did not pump any longer in the cooler location (Waiting for the new pump and filter) It is now in a location that is easy to service, I grounded the pump to the Trailer frame and ran the ground wire from the pump to the actual generator frame. I extended the positive or power wire to the new location. Hopefully this will make the new pump last longer, I also thought of adding a after market fuel pump and pressure reducing regulator but I am not sure what pressure the carb can handle. Any thoughts on this idea?

Awesome channel. It's cool that you've learned to fix so many things on your own. We are planning to travel the US for a year and I'm sure your tips are going to come in handy! Or we'll find you on the road and have you fix ours ;) haha

I just subscribed... I have a 7500 watt generator on my semi for my big sleeper... I been having troubles and im pretty sure my fuel pump isn't working good. I unhooked fuel line and it barely trickled... I even ran a line from pump to tanl to make sure it wasn't a supply line problem

Thanks, great video. Question: does the fuel pump make a clicking noise as it pumps or is it silent?

Hey Brian, I love watching your video. I have been trying to figure out what you do for a living because you have some mad skills and really nice Snap On tools LOL. - I have a very similar class C as yours. It’s an 04 29V and I think I have tripped the manual breaker. You didn’t happen to have reason to find the one on yours did you? I’m really perplexed and any input would be greatly appreciated. That includes any other viewer who might know. Much appreciated and thanks again for making all your great videos.

I HAVE A GENERATOR AND CAMPER LIKE YOURS NO GAS COMING OUT OF GAS LINE. BLOWED AIR BACK THRU HOSE SOUNDS LIKE GOING INTO EMPTY TANK 3/4 FULL DO THEY HAVE SEPARATE TANK INSIDE MAIN TANK MY GAS TANK LOOKS LIKE IT WAS CUT OPEN WELDED BACK TOGETHER AT FACTORY.. THANKS

Soon to be a fulltimer coming next year, doing as much research on everything to do with RV and maintenance I can do myself in certain instances, I was a firefighter for 17 yrs so I know understand the importance of checking all your equipment on the rig before, during and after so these are the kind of videos I really enjoy. Kinda have only one itty bitty thing.....when you make your videos can you leave out the music, I find it a bit distracting and would rather listen to what you are explaining. Thanks for al the great info.

Thanks Brian

excellent

Thanks

mine is surging and hard to strat in cold weather? suggestions?

So I have a onan 4500 that operates a PTO that operates my boom on my bucket van. It is doing the same thing. Running for a few minutes and dying. What is confusing though is that I have plenty of fuel coming in to the pump, plenty of fuel leaving the pump, plenty of fuel going to the filter and plenty of fuel leaving the filter. When it dies, it won't restart for a few minutes. Almost like it has to cool off. With the amount of fuel leaving the pump, is it still possible for it to be bad?

Thanks.

Thanks for the video. I have an older model Owen on my 1983 Jayco RV. The previous owners took out the generator and used the space for storage. When they put it back in, they didn't hook up the fuel line. How would I know where the fuel line goes? There's two gas tanks underneath, I don't see any cut and capped lines, is there a way to know which tank it goes to or where, in all the mess of lines, it ties in to? I've looked everywhere online. . .

I hope you can help me. Me and my wife would like to start dry camping. We need to buy a generator. I narrowed it down to 2. WEN 3800 (56380i) and CUMMINS ONAN P4500i. Which one of these would you recommend?

This was a very good video. I am experiencing nearly the same symtoms you described and I have the same generator. Fires up just fine when it's cold, but I add a load to it like the microwave or AC and it will only run for about 90 seconds and then shut down. Once this happens, it's not as easy to start back up (yes I turn off all loads inside before trying again). You have to prime it to hell to get it to fire, and sometimes it doesn't even fire up. I did your check in the video. Fuel streams out when I start it, and it slowly comes out when I prime it. So, this means the pump and filter are not bad, but something else with the EXACT same shut off. Any other ideas? New oil, and it's full, new air filter and spark plug. I'm baffled here... Thanks.

Thank you

Anyone know what the OEM fuel pump part number is for the Onan Microquiet 4000?

I just found this other tip on no start or stops after 40 minutes with a Onan. It turns out the oil dipstick should have been recalled on many Onan generators with any age on it! The marking are way to high and we have been overfilling our Onan and causing a lot of different types of damage to them then get to pay Cummins a ton of money for a temp fix! I haven't had a generator stop yet but I'm going down to Cummings (an old friend works there) and check with him and hopefully can give more information on it. Whats funny is I'll do my service this weekend and I mean it is OVER the 2000 hour service interval but it has only burned maybe 1/2 inch of oil on the stick and I have never had a shutdown except when the gas got low. Air filter is absolutely fine and only needs to be blown out and the gas filter I'll find out when it comes off but this unit has not failed me yet in the 3 years we have had this Minnie. But it's a Cummins and as a trucker I know how good Cummins are! BUT the pump check is a good tip for when it gets quiet on the right! Blue Sky's and Safe Journeys! kzfaq.info/get/bejne/rOCId8-d057Fhas.html

A very good video, but it is much more challenging than he makes it look. ***Very Important, use your phone to take pictures of it as you go along to assist you in reconnecting the wirings!

Thanks. I'm not sure what is wrong with my Onan 4000. I do a monthly 30 minute run. The generator seems to run as long as the Starter button is pressed. I have changed the air filter and spark plug. Made sure there is a spark when cranking. Took it out and held it close to metal and had a good spark. Took the fuel line off the carb and have good fuel flow. Yes the 75 gallon tank is full. I run seafoam in my fuel to counteract the dreaded Gasohol. I do not have many hours on the generator. I found you in thinking I may need to replace the filter and or fuel pump. Today I held the starter while running to get the error code 32. LOW CRANKING SPEED SENSE - FAULT CODE 32.... A. Vapor lock may occur in high ambient temperatures: operate in ambients at less than 120°F; verify proper installation to prevent air recirculation; correct as necessary. B. Measure steady DC voltage at fuel pump while genset is cranking: repair wiring as necessary. C. Try to start genset on shop fuel supply: verify tank level and fuel line condition in vehicle. D. Verify carburetor altitude setting: readjust as necessary. E. Verify choke operation, setting and linkage damage: readjust, repair or replace as necessary. F. Measure fuel pump pressure/flow: replace fuel filter or pump as necessary. G. Inspect carburetor butterfly for binding: replace carburetor as necessary.