fuel pump question

[IslandRunner]

ok fuel pump went out on the conquest, well i pulled it down i discovered its was a universal fuel pump for a 4 cylinder car, am thinking this pump my be the root of my problems with flooding out the motor get fuel in my oil (due to the p.s.i. its pumping). What p.s.i. should the fuel pump be pumping, for the Kawasaki 20 hp., what ya'll thoughts? thanks

[JohnF]

The pump specs are at the end of this thread.

[IslandRunner]

thanks i'll check it out!

[Zig]

Hi Islandrunner,
Just wondering how that pump situation is going? I had the same problem on my 2007 avenger that had a kohler engine with a mechanical fuel pump. I live at high elevation and my engine would spudder on me when I would get over 10,000 feet. I put an electric fuel pump on it and it worked fine for a while, then I started having a problem with it filling my crankcase with gas. I then put one of those in-line adjustable pressure reducers on it and set it at its lowest setting and that didn’t fix my problem. I then put in a toggle switch and only used the electric fuel pump as needed, that worked a lot better but it would still pump fuel into my crank case when I turned it on. If I didn’t keep an eye on my crank case it would fill up and then wouldn’t run right. I didn’t fix my problem the way I would have liked to but I sure would be interested in knowing how yours turned out!
Zig

[IslandRunner]

Well, I got the part number from the fuel pump at car quest from the threat that Johnf mentioned . But now the engine will not start think its flooding out because I can unplug the fuel pump an it will start and run for a few seconds, after messing with it for a while I gave up! Looks like I'll have to bring it to someone to look at. I'll keep u posted.

[Bazooo guy]

Hey guys read this thread if you have fuel in your crankcase.

http://www.6x6world.com/forums/engines/24533-engine-problems.html

I dont think the fuel pump is causing the problem unless the pressure is too high.

[JohnF]

post up the identification for the pump you bought - others will come across this thread someday and it might help them and we can all give it the second look for you. I'm with Bazoo Guy, your problem isn't the pump.

You have a problem with the operation of the float valve in the bowl of the carburetor. It can be: bad float, bad float needle valve, bad float needle valve seat, bad adjustment of the float, a bit of something (varnish? Hose?) that prohibits the needle valve from sealing to the seat, broken/bent/goobered up float hinge hardware.

Or, the body of the carburetor is broken/cracked and the fuel leaks out of the bowl. (although the "it runs when the pump is off" symptom hints at the above choice)

(just trying to make a list of things so folks that come across this thread with the same issue have some ideas.)

Hey Zig - elevation changes don't affect the operation of any fuel pumps I am aware of. My first thought when someone says that their engine sputters at elevation changes is that their carburetor jetting needs adjustment. Since adding a new fuel pump helped some I suspect that you have gunk in your fuel system that reduced the operation of the mechanical pump and has also messed up the float valve operation in your carburetor.

Contact your dealer (or any one of the Argo dealers that can be found online) and they can get you a copy of the altitude adjustments for your engine for jetting changes. Actually, I have found the engine service manual usually has this information too.

[IslandRunner]

Well got it running. The fuel pump seems to be working good so for . part number from carquest is E8016s. Had to pull the carb apart and clean it out, it was pretty bad!

[AlaskaGrizzly]

The carquest pump that I installed back in 2009 is still running working good. Just installed another one in my 2000 Conquest as well.