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Discussion Starter #1
2018 non abs grom fuel pump issues?

So i have tried to find a answer about my screaming fuel pump and cannot. Every time i ride for at least 30 mins above 50 mph the pump screams. it does not effect the bike AT ALL minus the noise and it does not sound good. I have rain it very low and shined a light to see anything which i did not tank looks clean. is there a part number for a OEM pump? im worried its going to shit the bed when im way to far from home one day.

my set up includes the following
Kitaco Cover
TB cam
DHM flash
Zoop loop exhaust
Dinger short ram intake
Straight up pump installed


 

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I have not heard of any fuel pumps going bad...
 

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If it is still under warranty you can take into a Honda dealer to have them check it out.

Usually anything above 50mph noise wise I usually think is the chain, maybe clean and lube your chain. I clean mind and lube it every Friday or on the week end.

Any other noise could be the F/I duty cycle going bonkers, also check and make sure all your nuts and bolts for the throttle body mount and inlet tube is tighten down to spec and also no leaks on your airbox and rubber connection to the throttle body.

good luck
 

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Discussion Starter #5
i just replaced the chain because i thought that was the noise. but i have fully check this entire bike over. im not to sure
 

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i just replaced the chain because i thought that was the noise. but i have fully check this entire bike over. im not to sure
It could also be noise from the disk brake pads or disc if the disc is warp or such the only other noise I can think off is the cam chain noise if the chain hits the top of the cylinder wall as it travels thru the tunnel area. I fixed my cam chain noise problem by installing a Koso cam chain kit and also installing GromFatherZ adjustable tube replacing the stock tube with spring that pushing on the Koso arm.

At high RPM the cam chain balloons out and the stock tensioner "spring and tube unit" can't handle it and the chain starts to hit the upper wall of the cylinder tunnel.

good luck
 

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Discussion Starter #8
i have tried to get a video of it but the wind noise blocks it out. im going to try and mount a mic from my gopro to see if it picks it up

only problem is i. i rode it for about 100 miles yesterday and it only started to do it at the end of my ride.
 
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