Your video, single-handedly fixed my Onan QC 7000 genset. I learned from you that I could remove the carb bowl and clean those jets which fixed my "not-starting" problem. Thank you from the bottom of my heart. Getting compitent Onan service is neither easy nor cheap. You are now my go-to genset guy.
Thank you! Yesterday was the first time I had ever had any issues with my Genset (Onan 4000). First it wouldn't crank, then sometime later it cranked but didn't sound right so I turned it off. I was 4 hrs from home so I was planning to troubleshoot today. Your videos will be my guide for sure during troubleshooting.
Fantastic videos...part 1 and 2....I am a Rvia Certified Technician and I run my own mobile RV repair but never had much practical experience with Gen/Sets.....I see a lot of these 4000 and used these two videos to diag and repair one of my long time customers Onan 4000....I couldnt have done it with out your videos......very methodical and thorough.....thanks a million...looking forward to watching more of your videos....!!!
Great Video!!! I also had spark, fuel and air. Checked and verified via your first video. I even changed the spark plug just to be sure. But still it will only crank but not start. This video helped me identify and clean out my stuck check valve. Now it turns on super easy. Thank you for the best video out there!!
I recently bought a 2008 Grey Hawk with only 7,100 miles and 37 hours on the Onan 4,000 generator. Everyone thought the generator would be trash. I removed the carb and cleaned the bowl, jets, and the STUCK SHUT OFF SOLENOID PLUNGER. Put it back together and it started right up. It even started at 6°F just two days ago. Don't forget to check that plunger.
Thank you! These things are finicky! I just had to do the starter in mine (with the help of a mobile RV repair guy - and it took both of us). Now having an issue with starting. Fuel pump is good, spark is good. This is the next thing to check. Thank you.
Great job! Very informative and with lots of tips to prevent errors. I've a Pleasureway Lexor which has the GenSet buried under the chassis and I'm sure it will be interesting to go through this process. Thanks for the effort.😃
I have worked trough all dignostic here and all was fine. But the generator woulden't start and go. The last thing was the carburator. I sprayed Carburator Cleaner inside through fuel intake pipe twice, and now the generator start and runs like a dream without any misfire.
All your video's have been very helpful! I just bougjt a Jayco Eagle 313H 2000 on an E450 chassis. My generator is an Onan 4000 KY. I bought a new battery fuel tank is topped off and it still won't Start. I will use your troubleshooting technique to see if that is my issue. Thank you so much for helping us newbies❤😊
Excellent troubleshooting that makes sense. Very methodical and clear. This is the best video on this topic. How does that sound when it doesn't stop? ;)
That makes so much sense. Thank you for pointing out that these carburetors will run just fine WITHOUT that darn solenoid even installed. I have a main jet that just screws on without that solenoid. I know what it does and why, but mine was more trouble than it's worth. The main jet without the solenoid has three larger holes in it where the other one has about 6-8 holes in it.
Thanks for the great videos, I'm gonna go fix my own generator now! Also it took until the end of the video, I thought you were saying CROTCH WASHER LOL
Hey there, sir. I've been clutching so hard at so many straws. I watched this video and thought "nah, that can't be it". But you completely nailed it. This was my problem. Luckily the newer models are a little easier to tear into. All I had to do was remove the air filter mount so I could get to the bolt on the solenoid. The wires disconnected so I didn't have to loop them through the wrench. Anyway, thanks again and cheers to you.
Thanks for all the step by step instructions love your tutorials. Question, my Onan will only stay running when I push the throttle. You have a video on how to fix this?
Very good video. I stored my 2020 Thor it did start ,but now won't run AC anymore. I'm hoping it just needs a cleaning. I'll look for other vid in your link. Thanks
I found a good tip for the pesky wire behind the carb that you need a long pair pliers to disconnect. If you remove the carb to ultrasonic clean it that wire is long enough to run around to the front. It's in a loom with other wires. Nip the zip tie holding the loom together and unlace the single wire and move to front. I suggest lace it in a single piece of loom for extra protection but not necessary. Not many will want to fully remove carb due to the fact its a pain in the ass getting it back in and gaskets lined up.
OK, so I cranked it today and it was loud, not the normal sound, so I turned it off. Scratching my head. It seems as there is not restriction or whatever you would say to describe when it is generating. I thought maybe the starter, but it started good.😕Any thoughts . . .
I have a generator that will only start if I spray starting fluid into the carb first, then it will run all day. Any suggestions on what I should check?
Thanks for the video it really helps. My Onan 4000 starts but doesn't stay on. I check the battery and is at 12.1 Volts, spark plug is good, air filter is good, and it gives me the same voltage when testing the options you show from the power to the engine and then engine and live as you did and it gives me 12.0 Volts. I also checked the plunger and it's working too. Do you think my voltage is the problem? Thanks in advance for any help you can provide.
Hi, Thanks for the comment. 12 volts is very low, yes. A fully charged battery should be 12.6 V. And around 13.5 to 14 V when charging via the Motorhome engine alternator or battery charger. Once the generator starts it should be able to run without a battery even connected so I would say even though the batteries appear low voltage, it shouldn't be the issue. Do the batteries show a higher voltage when the generator is running ?
Thanks for taking the time, I didn't check the battery but I will once I get the generator to run. Thanks for the great videos. I'll keep you posted.@@rvknowhow
Great video. I followed your steps and discovered I don’t have 12V coming from the red wire to the fuel shut off valve. Do you have any recommendations on what to do next?
Exact same problem, it's like I don't have something turned on in the RV. I have good battery voltage. I have no idea where that red wire goes and it's barely long enough to see any path
I’ve got an interesting issue… my generator was working Wednesday and Thursday evening at my campsite. Friday when I went to start it, it sounds like it was cranking, but wouldn’t turn over. Fuel was at roughly 1/2 tank, RV hadn’t moved (I know nothing rattled out of place) and obviously I was getting clean air and spark yesterday. Any ideas where I should start?
@@rvknowhow not sure if I can hear the solenoid, the engine is definitely rotating… entire generator is shaking, as soon as I release the start switch, engine stops
So if the engine is rotating and shaking we can rule out a starter motor issue, now if you check for spark and air filter blocked, also fuel flow, I have a RV Generator won't start part 1 video in my library that covers this, I would rule this out first before diving deeper, let me know how you get on
@@rvknowhow I checked the air filter, seems fine… didn’t think to check the spark plug, as it was working the day before… is that something that would just stop working?
Your video, single-handedly fixed my Onan QC 7000 genset. I learned from you that I could remove the carb bowl and clean those jets which fixed my "not-starting" problem. Thank you from the bottom of my heart. Getting compitent Onan service is neither easy nor cheap. You are now my go-to genset guy.
Glad to see my videos are helping and thanks for the comment
Thank you! Yesterday was the first time I had ever had any issues with my Genset (Onan 4000). First it wouldn't crank, then sometime later it cranked but didn't sound right so I turned it off. I was 4 hrs from home so I was planning to troubleshoot today. Your videos will be my guide for sure during troubleshooting.
Fantastic videos...part 1 and 2....I am a Rvia Certified Technician and I run my own mobile RV repair but never had much practical experience with Gen/Sets.....I see a lot of these 4000 and used these two videos to diag and repair one of my long time customers Onan 4000....I couldnt have done it with out your videos......very methodical and thorough.....thanks a million...looking forward to watching more of your videos....!!!
The carburetor bowl!! You likely saved me $1k in repair costs. And my son and I learned a lot about the generator! Thx
Great Video!!! I also had spark, fuel and air. Checked and verified via your first video. I even changed the spark plug just to be sure. But still it will only crank but not start. This video helped me identify and clean out my stuck check valve. Now it turns on super easy. Thank you for the best video out there!!
Glad to hear my video was helpful and thank you for the kind words
Thanks for the very detail video on how to fix the stuck plunger on the carburetor. Much appreciated
Glad it helped you out and thanks for the comment
exactly the problem I had cleaned the parts with carb cleaner and started right up, great video you saved me hundreds
Great to hear!
I recently bought a 2008 Grey Hawk with only 7,100 miles and 37 hours on the Onan 4,000 generator. Everyone thought the generator would be trash.
I removed the carb and cleaned the bowl, jets, and the STUCK SHUT OFF SOLENOID PLUNGER.
Put it back together and it started right up. It even started at 6°F just two days ago.
Don't forget to check that plunger.
The problem I am facing sounds exactly be covered here. Will follow the steps to see if it can be fixed. Very helpful and thanks.
Glad it helped and thanks for the comment
Thank you! These things are finicky! I just had to do the starter in mine (with the help of a mobile RV repair guy - and it took both of us). Now having an issue with starting. Fuel pump is good, spark is good. This is the next thing to check. Thank you.
Great job! Very informative and with lots of tips to prevent errors. I've a Pleasureway Lexor which has the GenSet buried under the chassis and I'm sure it will be interesting to go through this process. Thanks for the effort.😃
I'm glad to see my video was helpful and thanks for the comment
Thanks a million for this video. You got me out of a bind. I had to pull that plunger out. Tried cleaning but wasn’t enough. You da man!
Thank you!!! Your other video on cleaning the main jet just saved me a bunch!!
Great to hear! and thanks for the comment
Excellent demonstration and explanation. I have a 10kw which is different but really enjoyed watching. Thanks for posting.
Thank you for the kind words
I have worked trough all dignostic here and all was fine. But the generator woulden't start and go. The last thing was the carburator. I sprayed Carburator Cleaner inside through fuel intake pipe twice, and now the generator start and runs like a dream without any misfire.
Helpful tip! Mines an old 3.0 AJ series, but I can see how to test and bypass the shutoff valve.
All your video's have been very helpful! I just bougjt a Jayco Eagle 313H 2000 on an E450 chassis. My generator is an Onan 4000 KY. I bought a new battery fuel tank is topped off and it still won't Start. I will use your troubleshooting technique to see if that is my issue. Thank you so much for helping us newbies❤😊
Thanks for the instruction. Truly helped me to get my generator up and running again. :)
Glad it helped and thanks for the comment
Trying your methods tomorrow. Wish me luck!
Excellent troubleshooting that makes sense. Very methodical and clear. This is the best video on this topic. How does that sound when it doesn't stop? ;)
Thanks for the kind words
That makes so much sense. Thank you for pointing out that these carburetors will run just fine WITHOUT that darn solenoid even installed. I have a main jet that just screws on without that solenoid. I know what it does and why, but mine was more trouble than it's worth. The main jet without the solenoid has three larger holes in it where the other one has about 6-8 holes in it.
Thanks for the great videos, I'm gonna go fix my own generator now!
Also it took until the end of the video, I thought you were saying CROTCH WASHER LOL
Hey there, sir. I've been clutching so hard at so many straws. I watched this video and thought "nah, that can't be it". But you completely nailed it. This was my problem. Luckily the newer models are a little easier to tear into. All I had to do was remove the air filter mount so I could get to the bolt on the solenoid. The wires disconnected so I didn't have to loop them through the wrench.
Anyway, thanks again and cheers to you.
Thanks for the comment and I'm glad you found the video helpful
Thanks for all the step by step instructions love your tutorials. Question, my Onan will only stay running when I push the throttle. You have a video on how to fix this?
Awesome.. thank you for helping me better under how a generator works..
Thanks for making this video very helpful 👍👍
Glad it was helpful! Thanks for the comment
Great help, solved problem I have been working on for a few days of an on.
Glad it helped and thanks for the comment
Very good video. I stored my 2020 Thor it did start ,but now won't run AC anymore. I'm hoping it just needs a cleaning. I'll look for other vid in your link. Thanks
Great explanation! We are going to try tomorrow.
Good luck!
For a minute I thought J. Statham was working off his community service hours by doing a you tube video
LOL. I had just texted my buddy that Jason Statham is doing RV TED Talks now.
When he makes a mistake he starts punching $hit.
Hahah, I thought it was his brother or something that's hilarious
Thanks. Spot on tutorial!!
Great job of explaining how it works Thank's!
Glad it was helpful!
Great video both 1&2 !! I have the exact same generator mine turns on but shuts off in a few minutes. Any ideas ? Thank you
I found a good tip for the pesky wire behind the carb that you need a long pair pliers to disconnect. If you remove the carb to ultrasonic clean it that wire is long enough to run around to the front. It's in a loom with other wires. Nip the zip tie holding the loom together and unlace the single wire and move to front. I suggest lace it in a single piece of loom for extra protection but not necessary. Not many will want to fully remove carb due to the fact its a pain in the ass getting it back in and gaskets lined up.
Love the idea of the fuel cutoff valve. Which one did you use?
Great video with helpful info!
Thanks and glad it was helpful!
Thanks Thanks Thanks Thanks for your information. You help me i appreciate you boss man
Great video with lots of help. Thanks
Thank you. I’m trying this tomorrow
Good luck!
OK, so I cranked it today and it was loud, not the normal sound, so I turned it off. Scratching my head. It seems as there is not restriction or whatever you would say to describe when it is generating. I thought maybe the starter, but it started good.😕Any thoughts . . .
Thank you for the info mine won’t even turn check the battery good
I have a generator that will only start if I spray starting fluid into the carb first, then it will run all day. Any suggestions on what I should check?
very good video thanks a lot
Thanks for the video it really helps. My Onan 4000 starts but doesn't stay on. I check the battery and is at 12.1 Volts, spark plug is good, air filter is good, and it gives me the same voltage when testing the options you show from the power to the engine and then engine and live as you did and it gives me 12.0 Volts. I also checked the plunger and it's working too. Do you think my voltage is the problem? Thanks in advance for any help you can provide.
Hi, Thanks for the comment. 12 volts is very low, yes. A fully charged battery should be 12.6 V. And around 13.5 to 14 V when charging via the Motorhome engine alternator or battery charger. Once the generator starts it should be able to run without a battery even connected so I would say even though the batteries appear low voltage, it shouldn't be the issue. Do the batteries show a higher voltage when the generator is running ?
Thanks for taking the time, I didn't check the battery but I will once I get the generator to run. Thanks for the great videos. I'll keep you posted.@@rvknowhow
Great video. I followed your steps and discovered I don’t have 12V coming from the red wire to the fuel shut off valve. Do you have any recommendations on what to do next?
Hi and thanks for the comment.
First thing I would check is to make sure you have 12 V at both sides of the solenoid.
Exact same problem, it's like I don't have something turned on in the RV. I have good battery voltage. I have no idea where that red wire goes and it's barely long enough to see any path
Awesome video thanks for the info
No problem 👍
Thanks bro !
Thanks mate
I’ve got an interesting issue… my generator was working Wednesday and Thursday evening at my campsite. Friday when I went to start it, it sounds like it was cranking, but wouldn’t turn over.
Fuel was at roughly 1/2 tank, RV hadn’t moved (I know nothing rattled out of place) and obviously I was getting clean air and spark yesterday.
Any ideas where I should start?
Hi, sorry for your troubles, when you say cranking, can you hear the starter engage or does the solenoid just click ?
@@rvknowhow not sure if I can hear the solenoid, the engine is definitely rotating… entire generator is shaking, as soon as I release the start switch, engine stops
So if the engine is rotating and shaking we can rule out a starter motor issue, now if you check for spark and air filter blocked, also fuel flow, I have a RV Generator won't start part 1 video in my library that covers this, I would rule this out first before diving deeper, let me know how you get on
Oh sorry you mentioned you have clean are and spark already, so next is to bypass the fuel shut off valve and see if it starts
@@rvknowhow I checked the air filter, seems fine… didn’t think to check the spark plug, as it was working the day before… is that something that would just stop working?
Onan 2800 runs for about a minute then shut down. Any ideas?
Hi Ray. There should be flashing code on the start switch when it stops running ?
What is the name of that part? I have the same issues with the solenoid.
Do you mean the "Electric fuel shut off valve" ?
Hello RV 👋 we #PowerLearningChannel also doing same Makinh generator videos
Where is the fuel filter?
It’s located inside the genny on the lower left as you look, under the solenoid and control unit
Great video thanks for the info
You're welcome