[ccarcher72]

I recently purchased this Fuel Pump for Honda VT700C Shadow 750 VT750C 700 | eBay fuel pump from felcoproducts because it was a cheaper route to go. I also jumped the fuel pump relay because I thought it was bad.
The only time I can hear it run is when I turn the key. I'm having a problem with the bike cutting out and I think it is because the pump is not keeping the carbs full. Anyone else use one of these and did you have any issues with them?

 

[Leathel]

are your plugs easy to get out? check one for color when it cuts out, just in case its pumping to much, leaking past the float valve and fouling the plug... mine did that and at first I thought it was lean and giving it more throttle improved the way it went.... until I looked at a plug.

 

[ccarcher72]

I will have to check the plugs when it happens. I can feel the pump click every few seconds, so I think the pump is working. What am I looking for on the plug?

I should mention it is a pain in the ass to get started again when it stalls at operating temp too.

 

[Leathel]

black sooty plug is what I think you will find..... if it did what mine did.

 

[ccarcher72]

I checked them, and they are black. They were recently bought plugs too. So, its getting too much fuel in the cylinder?

 

[ccarcher72]

When I attempt to restart right after it stalls, it will pop and backfire too.

 

[Leathel]

yup sounds like fouling plugs from over fueling, I carried spares around for a while as mine was intermittent, at times the float valves would hold but not always

I have now fitted a 1-4 psi fuel regulator in mine to stop it happening, set at around 3 (guess as I have no gauge on it) after new float valves didn't fix it

Holley 12 804 Fuel Pressure Regulator 1 4 PSI Single Inlet Dual Outlets | eBay

That is what I fitted... I did have a 3-12 psi one before which stopped 99% of the problem but after I fitted the lower one I have not had an issue (well not from that, playing with jets ATM so winding the right mix and almost sorted)

I fitted mine where the tools go on my 1100 as I have a tool bag so ha nothing there.

 

[ccarcher72]

The plugs are a cross between sooty and oily. I tried taking it out again and barely made it to 2nd. and it just wants to bog down. More throttle makes it worse until I pull in the clutch then it dies and won't start.

Another thing to mention: The mixture screw caps are gone indicating PO has done some adjusting of their own. The bike has been sitting since 06...will setting them back to factory preset and go from there solve this issue maybe?

 

[Leathel]

The plugs are a cross between sooty and oily. I tried taking it out again and barely made it to 2nd. and it just wants to bog down. More throttle makes it worse until I pull in the clutch then it dies and won't start.

Another thing to mention: The mixture screw caps are gone indicating PO has done some adjusting of their own. The bike has been sitting since 06...will setting them back to factory preset and go from there solve this issue maybe?

plugs will be fouled, runs real bad... any throttle and they die... hence I used to take spare plugs, change them and its like a new bike again... for a while

Clean the plugs and it will have a new lease of life for a little while, once they have fouled the don't fire right so more unburnt fuel so wetter look

Another thing I used to do to get me home was turn the fuel of while on the go... gave the plugs a chance to burn the excess fuel, then when it ran out turn it back on while on the run to fire up again, had to nurse the bike home a few times while I was sorting what was wrong


Could be jetting too or float levels but if it only happened after the fuel pump change I would be leaning to that pumping more than the float valve can handle

**** in the needle valve will have the carbs over flowing but to much pressure raises the fuel lever then shuts off when the float bottoms on the spring in the valve

 

[ccarcher72]

Well, its been sitting for 8 years and it only had 8,083 original miles on it for an 85, so I jumped on it. Fuel pump was an issue. And had to clean carb a few times and noticed the idle jet kept plugging up. New fuel lines, new filter, cleaned tanks etc. New plugs, checked coils, pickup coils and plug wires....those all checked out good. Maybe the main jet needs extra cleaning too, not sure. Don't have a float level gauge, so not sure how to measure it.

 

[Leathel]

Well, its been sitting for 8 years and it only had 8,083 original miles on it for an 85, so I jumped on it. Fuel pump was an issue. And had to clean carb a few times and noticed the idle jet kept plugging up. New fuel lines, new filter, cleaned tanks etc. New plugs, checked coils, pickup coils and plug wires....those all checked out good. Maybe the main jet needs extra cleaning too, not sure. Don't have a float level gauge, so not sure how to measure it.

Float level is measured from the surface the bowl seals on to the top of the float in most cases, I use a steel rule that starts at 0 or veneer calipers depth part, measured without compressing the spring.

 

[ccarcher72]

This might be a stupid question, but concerning the fuel pump I bought and installed...Are they able to be installed upside down and still work properly? There is not a lot of space to work with putting this pump in considering I had to put a splice between the 3/8 and 1/4 inch hoses. I noticed the pump is getting hot too. The bike will run for a few minutes then stall. I turn the key off for about 10-15 seconds, turn key back on and the fuel pump runs until I assume the bowls fill then it will start.

 

[ccarcher72]

It was the fuel pump not running consistently. Wasn't keeping the bowls full. This Monday went for my first real ride. Had to reach down while riding and tap the pump when bike started to stall and it would pi k back up. On the return ride home it ran perfectly, no stalling or anything. Cruising down the road in overdrive was awesome! Hopefully will have at least one more day of warmer weather to ride, then get it ready for some work over the winter.