vanbiker
CB750 Member
I'm very frustrated with this problem, but I would like to know more about the fuel line arrangement out of the gas tank on my 1970 CB750. I have a very low (60 miles or so) effective range because when my fuel level gets lower the engine stalls because of low fuel flow, I switch to reserve and no help, but there is plenty of fuel in the tank. I removed the petcock and cleaned and checked all ports and it seems clear, I cleaned the brass filter screen, replaced the fuel lines and cleaned out the inline filters, still no luck. When I disconnect the fuel lines from the tank and turn on the petcock to reserve, fuel flows fine. There are two fuel lines coming out of the petcock routed to the fuel bar next to the carbs....are they the same? Is one for reserve only? I'm confused!