HiGuys,<br /><br />i was wondering what the fuel pump pressure range on a honda 40 fuel pump should be??. <br /><br />Also is there a one way valve in these pumps to prevent flow back into fuel tank.<br /><br />Regards<br /><br /><br />Kellaig
Fuel pump pressure with these engines would be consistant with most diaphram pumps at some pretty low psi.5 to 7 is about all you want.Your primer bulb is the check valve.
