I have experienced a Fuel Pump Problem which I need some assistance with. I have a Universal M 12 engine (10hp) with a Facet Electric Fuel Pump. Leaving the Harbor the engine stopped running. I decided to restart it and it did for about 1 minute and died again. It continued this way till I was able to get back to my slip. Just before I tied off at my slip the engine died again. What I found was that the electric fuel pump was not clicking which means the pump is not working and pumping fuel. I checked to see if the wiring was disturbed to the pump and in doing so I bumped the pump with a screw driver and it started working again. I ran it at the dock for a while with no issues. Does this pump need replacement or just have the filter which is in the Fuel Pump Changed. I haven't got to this at the present time. Any help of sugestions would be appreciated. I do have a New Spare Facet Fuel Pump and will install it if needed.:cry:
Facet Diesel Fuel Pump Problem
- Thread starter Rag Doll
- Start date
- Status
Try cleaning the electrical contacts to make sure you have a good electrical connection. On my O'Day they did not install the pumps properly and I am going to fix that problem this week. The primary fuel filter should be the first thing after the tank, then the fuel pump, then the secondary fuel filter on the engine. On my boat the pump is first meaning it is pressurizing the filter when the filter is supposed to be on the suction side of the pump.
If you have a new spare I'd put it in and keep this one as the spare. Why not have the better equipment in service and the older unit in case of emergency?
If you have a new spare I'd put it in and keep this one as the spare. Why not have the better equipment in service and the older unit in case of emergency?
The OTHER and perhaps more important reason to plumb it Racor, pump, engine, is that the pump has a small filter in the bottom. You don't want to clog this pump up.
http://c34.org/bbs/index.php/topic,5078.msg32616.html#msg32616
http://c34.org/bbs/index.php/topic,5078.msg32616.html#msg32616
I will be working on this tomorrow. I need to know which Racor Primary Diesel Fuel filter needs to be installed. I will then install the New Facet Electric Fuel Pump and then run it to the secondary filter on the engine. I do have spare Facet 75 micron screen filters. I am just wondering if what I have discovered is the real problem and nothing else will be impacting the issue. All Fuel filters will be new. Should the Primary Filter be above the Fuel Pump and below the fuel line exiting the top of the fuel tank?
I also had this problem on my Oday 34. I did not hear the ticking of the electric pump and thought it was going bad. It turned out that I had an air lock. Try bleeding the line at the engine "high pressure" fuel pump and the engine filter. If you know you have 12 volts at the electric pump, crack open one of the bleed screws. As the fuel and, hopefully, air come out the pump will start ticking (pumping). When you are happy that all the air is out retighten it and move on to the other bleeder.
My problem was a little harder to trouble shoot because my 12 volt wire runs through an oil pressure switch and if the engine looses oil pressure the pump stops working. There is an odd little curcuit that lets it run while you are cranking the engine untill the oil pressure builds up. Consequently I had to run a temporay wire to the pump while I was bleeding the system.
And yes, you do want to install that Racor filter/seperator
Good luck, JB
My problem was a little harder to trouble shoot because my 12 volt wire runs through an oil pressure switch and if the engine looses oil pressure the pump stops working. There is an odd little curcuit that lets it run while you are cranking the engine untill the oil pressure builds up. Consequently I had to run a temporay wire to the pump while I was bleeding the system.
And yes, you do want to install that Racor filter/seperator
Good luck, JB
If there was no clicking at all until after you tapped the pump, I would suspect contact issues rather than the filter. We had the filter on our pump get clogged once, and the pump did still click, just much slower (once every 5 seconds instead of more than once per second). I agree that filtering before the pump would be better than the factory arrangement.
Question for all. If the filter is first after the fuel tank wouldn't it be best to mount it higher than the tank? My thought is if the fuel valve is left open and the filter leaks it will be a siphon if it is lower than the pickup tube in the tank. If it is higher it will have a natural siphon break if it leaks? Any thoughts on this? My filter is currently well below the pump and tank as originally installed by OEM but the pump is above the tank and first in series from the tank. The pump itself may stop a siphon since you'd be trying to flow fuel through the pump impeller or whatever method they use to pump.
What Series Racor Filter did you use as your primary? I was told that a 120RMAM30 would work for my engine a Universal M 12 (10hp). This Primary Filter will clean up to 30 micros which is recommended by Racor for a Primary filter going into the suction side of the fuel pump.
I use the racor 120 since the gallons per hour you will use is way below the capacity of this filter. But 30 microns is too large, even though it is recommended to you, go with a ten micron primary. I used to use a 2 micron primary but they clog up fast if you have any contamination in the fuel. There seems to be some debate on what the secondary filter on the engine is. Ideally you want a 10 primary then a 2 secondary. All filtration is a little subjective. 10 micron means it will trap some high percentage of particles larger than 10 microns. It is not a guarantee nothing larger will ever get through. I hope to upgrade my primary to a racor 500MA soon as the filter elements are cheaper and you can easily mount a gauge on it to see if the pressure is increasing meaning the filter is clogging up. This is really overkill on our small engines. I've used the 120 for 17 years without issue.
Thank you for the help I really appreciate it. I find this O Day site very helpfull and the people on it very accommidating when I ask for help. It sure makes resolving a problem much easier when you have fellow O Day Owners helping you. Thank you again.
- Status