Whining Noise - Fuel Pump 2014 Scrambler

malangon · Oct 29, 2019

Hi all,

I previously posted about my 2014 Scrambler. Stalled out when I was cut off by a car and wouldn't start again. The electrical seems fine, engine turns over, but not start. A nearby mechanic said it "sounded" like a fuel delivery issue.

I just changed out the fuel filter, fuel pump relay, and the fuse looks ok.

When I replaced the tank and tried to start, I am hearing a whining noise from the fuel pump that sounds like a pump that is not primed. Little hard to describe.

I tried a few times and no luck.

I assume at this point that the relay and fuse are fine since the pump is operating. I was told the pump is self priming so I don't need to fill the filter when I replaced it.

At this point I am only guessing but is the pump not getting the intake of fuel? I haven't ridden this bike enough for there to be any junk in the tank. I checked the stainless steel pre-filter and it looked ok but I didn't closely inspect it. Maybe something is clogging that intake?

Any suggestions?

joe mc donald · Oct 29, 2019

Malangon.
First thing is check your battery is fit for purpose. When you turn your bike let it prime and go through it's motions. You may have a bit of air in the system and do make sure you have not trapped any of the fuel lines or any lines whilst working at it. A simple way to test is get a funnel and bit of tube and connect direct that way the fuel should get in there directly. See if it fires up.
Regards
Joe.

malangon · Oct 29, 2019

New battery, been on a conditioner. I have seen the recommendation about batter repeatedly but again if the bike is powering up, I can hear the pump operating - it doesn't strike me as an electrical problem but rather a mechanical one.