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electronic fuel pump now pumping to much fuel?
http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=14457		 Page 1 of 1
Author:  prodriver [ Fri Dec 10, 2010 11:21 am ]
Post subject:  electronic fuel pump now pumping to much fuel?
Ok so the coil issue has been resolved, but after I took everthing apart and put it back together the fuel pump is pumping constant? Before it would pump for 5 seconds or so the prime then slow down once loaded. Now it runs as if it I hooked it up to 110 volts! It runs normal during the load stage when it is trying to pull fuel up to the motor, then once fuel is there it keeps supplying fuel to the motor as if it did not prime, the motor is getting plenty of fuel, actually to much fuel, I can smell it burning really rich so now the put is forcing so much fuel into the motor that it will not idle for very long before it dies out from being flooded. My kill switch no longer works so I am thinking there may be a ground wire somewhere that is not hooked up? And hopefully this same wire is causing the fuel pump issue? I doubt it but ev everyone can hope. Any thoughts would be great.
Author:  prodriver [ Fri Dec 10, 2010 2:46 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
17 views no response, dang. With ur knowledge I too can kill some ducks tomorrow.

Bump babbbbbump
Author:  coastal [ Fri Dec 10, 2010 3:06 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Do you have Mods on your engine?
Author:  cb5331 [ Fri Dec 10, 2010 3:34 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
I responded to your other thread. You keep bouncing around...
Author:  prodriver [ Fri Dec 10, 2010 3:42 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Coastal, no mods just 25 hp kohler longtail just replaced coil, and I think I forgot a wire somewhere in the mix?

Sorry CB, I flet this was a
Different issue, and I want to work on it tonight. Didn't know how often people looked at their threads they post on, seems as though people are on here all day. Sorry I keep jumping around but I am in a frantic rush to have it fixed by 6:36 am for the second split if this was outside of season wouldn't be a big deal. Thank you.
Author:  cb5331 [ Fri Dec 10, 2010 3:51 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
It is a separate issue, but kinda a continuation of the other thread too...As far as how we read threads, I read whatever is on the top of "view active topics" and would assume a lot of others do too. I pay little attention to what the thread is called... May have something to do with my thread niggering, but anyways... :lol: Check that thread and get back to us.

Have you tried just adjusting the governor? Is it possible you knocked some of the linkage out of whack when putting in the coil.

If you still haven't downloaded the service and owners manuals for your motor, you need to do that.
Author:  cb5331 [ Fri Dec 10, 2010 4:06 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Author:  prodriver [ Fri Dec 10, 2010 4:14 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
May be stock pump, its a 1996 motor but it seems the pump was designed to mount on the motor.I completely took carb apart before duck season and cleaned house, like new now. Would a pinched fuel line casue the pump to not seem primes so constantly pump, I know that sounds asp backwards but I am clueless other than it trying to take a dump on me right now.
Author:  cb5331 [ Fri Dec 10, 2010 4:23 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
I don't know man...I guess it's possible the diaphragm in the pump has been damaged. That is the only reason for it to "keep pumping" as you say. Could also be the float sticking on the carb, and just letting too much fuel in the bowl.

On the pump, it has one hose going down to the block, one to the gas tank, and one to the carb right? THere is no electrical wires going to it right?
Author:  coastal [ Fri Dec 10, 2010 4:38 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
You got me cornfuzed :?
Author:  prodriver [ Fri Dec 10, 2010 5:07 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
This should help, it has the fuel line coming from tank to pump then on other side it has the fuel line continuing to the carb. It has a hot and ground coming off of pump, ground is grounded right by pump and hot runs under hood and is connected to a hot from ignition.
Author:  cb5331 [ Fri Dec 10, 2010 5:49 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Hmmm. Then yeah, I guess it could be the ground... :? Don't know why a bad ground would make the pump pump more, but it's worth looking into. I haven't seen a stock electric pump on the kohler. I knew there was another style that worked off the cam or crankshaft or something of that nature, but not an electric pump. Take a pic of it and post it up.

Did you ever look at the linkage? And did you ever try just adjusting the idle?
Author:  prodriver [ Sat Dec 11, 2010 5:46 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Alright checked out wire I unhooked all seem to be plug in the exact same way when I took it apart. It seems the fuel pump primes and continues to pump fuel into carb. I am thinking maybe carb float is stuck up or has a hole in it and it is allowing to much fuel into motor? Also kill switch no longer works which I think it was just time for it to die? I checked the gas cut off( silinoid? Not sure on the spelling) on front of carb it seems to be actuating as it should.linkage looks to be fine. Motor runs fine if you crank it and give it some gas only. After about 3 min of idling is when it dies out then when u recrank it has a hard time and shoot fuel out of muffler? Is there anything else that would limit or cut the fuel pump off? ( Also the fuel pump is a facet brand electronic fuel pump, looks like it was added after motor was purchased.
Author:  garjacker [ Sat Dec 11, 2010 7:02 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
dude pumps just pump, then dead head. if its continuing to pump then something in the carb is allowing it to push fuel. flaot could be sticking, trash in needle and seat, also float might be out of ajustment never allowing needle to seat. If this were a new setup i would say to much e-pump pressure. most air cooled small engines only need about 2-2.5 psi of fuel pressure and the run of the mill facet bought at advance is a 3.5 to 5 psi. in which case i would say put a fuel pressure regulator in line to protect from flooding.
Author:  kibb [ Sat Dec 11, 2010 7:40 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
sounds like a stuck float not a bad ground. if it were a bad ground the pump would just not pump or pump intermittently. ive done carb jobs and have the overflow let gas out two days later due to trash in the fuel. tear the carb apart again and clean everything real good, put new filters in-line and water seperator, and you should be good to go.
Author:  prodriver [ Sat Dec 11, 2010 11:14 pm ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
Saweeet, ok that sounds like the general solve all is a carb clean up. thank you everyone for the assistance I will clean carb tomorrow, buy the kit this week and by next weekend hopefully have her running right.


Next question, do you think the kill switch just got whacked around and died while I was working? Tell me if this sounds right, the kill switch is a switch, duh, but it only has one wire running off of it which is then grounded to the longtail handle by the grip. How does the kill closing end a circuit and kill the motor? Is it that it completes the circuit when it closes which some how kills the motor? I think my switch just died amongst everything else getting jacked up.
Author:  garjacker [ Sun Dec 12, 2010 7:19 am ]
Post subject:  Re: electronic fuel pump now pumping to much fuel?
ok motors have whats called a terminal ground. this is usually an insulated bolt or screw that has wires that run to the coils. when you pull the lanyard your kill switch which is in the "open" position then switches "closed" putting your coils to ground, killing the motor. if im not mistaken your ignition switch will run to the same terminal ground not to be confused with the common ground. if you put in new coils you might have forgot to wire the coils back to the terminal ground circiut.
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