fuel filter

[xltier]

on my 2003 Yamaha sx250 ox66 fuel injected the paper filter in the plastic jar that feeds the low press. pumps doesn't stay full. sometimes it is below the paper element in the jar.i am have many issues with fuel delivery I think. today it went from running 5200rpm down a river to 1900 rpm. max.spoiled another day off.

 

[xltier]

on my 2003 Yamaha sx250 ox66 fuel injected the paper filter in the plastic jar that feeds the low press. pumps doesn't stay full. sometimes it is below the paper element in the jar.i am have many issues with fuel delivery I think. today it went from running 5200rpm down a river to 1900 rpm. max.spoiled another day off.

what should the pressure be coming from the low pressure pumps to the vst. I got about 21.lbs.seems high just for supply.

 

[Mouse action]

Should be about 40lbs.

 

[xltier]

THESE R JUST VACUMN DIAPHRam pumps to keep the vst tank full for the high pressure pump.that one runs around 40.lbs. to the injectors