Reply To: [How to Tutorial] Upgrade Fuel Lines & Filter on Hyosung GT GT125R GT250R (Carb Hose Diagram)
I’m struggling to get fuel from my tank into my carb, I’ve bought a new fuel pump and I’ve checked the hoses for any blockages. when I manually suck on the vacuum pipe fuel comes out of the fuel pipe but when I connect everything back up and try to start it nothing goes into to fuel pump and then into the carb, was wondering if there was anything I could try?
Fuel tap is faulty (just replace it as it will 100% leave you stranded) or there is lack of vacuum to open the taps when engine cranks.
Lack of vacuum follows on
- Rotted / Old ORings under the rubber intake manifolds
- Airbox is not sitting in the carb 100% (especially the front where tiny air still gets sucked in)
- Intake manifolds (spray carb cleaner when running to see if revs change , then intake pipes have a problem)
- Loose vacuum hoses or clogged hoses (i hope not)
- metal manifold clamps holding the carbs down are loose. (don’t overtighten as inlets are very difficult to get brand new)