| Author | Message | ||
| Ron R. (152.163.252.163) Rating: |
To The Great Ones: I really hated to ask this one. However I'm tired of looking through years of past post trying to find out this info. Let me explain the situation a little first then I'll ask the question. Here goes. I had to get another generator and I'm at the end of the installation process. It is a Onan Emerald Plus 6500, and seems to be in great condition overall.I purchased a new marine fuel tank with the fill neck, vent tube and withdrawal on the top. I even installed a rubber prime ball in line to help prime the generator. The tank is about 6 feet from the generator and is also mounted higher. The tank is half full right now. I am not getting fuel through the line, except when I squeeze the prime ball. The fuel stops when I stop squeezing. The Generator starts to run but runs out of fuel (No Kidding). It has a electric fuel pump on the side which looks big enough to maybe suck a feather with the wind behind it. The manual also said it has a fuel pressure shut off switch inside. Maybe the pressure from the primer ball is too much. QUESTION: Do I need an aditional fuel pump to use this tank, or would it be easier to put a bottom withdrawal fitting on the tank to help it gravity feed? I know this may be a ignorant question, but if you guys can help, it would be greatly appreciated. Maybe I'm getting too tired to think about this stuff today. I am on a pretty tight time schedule and need to get this project done. Thanks for your time, Ron | ||
| Geoff (Geoff) (66.238.120.75)
Rating: N/A |
I would say the electric fuel pump is not working, are you sure what you are looking at is actually a fuel pump? Make sure you are getting power to it and disconnect the line between it and the generator and see if it is pumping fuel. Auto parts stores sell low pressure electric fuel pumps if you need one-- I bought one for $38 at Auto Zone and use it on my diesel generator. Be sure you have an in-line filter before the pump. | ||
| Tom Hamrick (Tomhamrick) (167.83.101.23)
Rating: N/A |
Ron, I have almost the same setup with a 7000 Onan Marquis. I used a marine tank that is located about 12 feet from the generator, and is at the same level. I have a steel fuel line going up from the tank, over the wheel well and back down to the generator and the stock fuel pump on the generator will pull this just fine. I did not prime the line on installation but let the pump pull fuel from the tank. Geoff is probably correct about the fuel pump, but be sure all connections are tight and no air can get into the lines. Tom Hamrick Eagle 10 | ||
| FAST FRED (67.75.106.173) Rating: N/A |
Disconect the push on clip on the OHNO starter that signals start. Then push the manual start. You should hear the electric pump run fast then slow down to a very slow pulse. If it never slows down , you have a bad pickup in the tank,or an obstruction , if it does reinstall the starter controll & enjoy. Should pull the fuel as far as you wish, I have this setup on my boat and it works just fine. FAST FRED | ||
| two dogs (67.30.23.123) Rating: N/A |
you might disconect the fuel line from the unit & blow" backwards toward the tank...you should hear bubbleing....simple cost nothing,first thing to try ....only blow with lungs ...no air hoses | ||
| Peter Broadribb (Madbrit) (216.67.221.72)
Rating: N/A |
I have a fuel filter in the supply line just before the ONan pump. This is rarely full and more often than not, it appears to be empty. There is a small amount of fuel at the lowest corner of the filter. How it pulls the fuel, I don't know. I even tried using my Mighty-Vac to test the pump was pulling fuel and not air and the filter still stays mostly empty and the Mighty-Vac pulled the fuel just fine. Peter. | ||
| Jayjay (198.81.26.104) Rating: N/A |
Lots of good advice, but get rid of the prime bulb. You don't need it, since the Onan fuel pump will pull from about 15' ...uphill. Look for air leaks immediately. Onan uses a 2.8 to 3.2 PSI fuel pump, if you use a standard auto one they frequently cause flooding. If you can't find a low pressure one use a pressure regulator between it and the float bowl. Let us know how it turns ou. Okay? | ||
| Ron R. (205.188.208.39) Rating: N/A |
Thanks Folks: I got it running. I will get rid of the bulb as suggested. Also I did checks on the pump and it was fine. The connectors seemed to need cleaned, so I lightly filed them off. I also disconected the OHNO clip as suggested, and put it back.Generator runs good. I will ask another question on another post. Thanks Again, Ron |
