Originally Posted by
zkid09
working on a buggy for a buddy of mine and having some issues.
its a GS storm and has an HPI .21 motor.
we cant make it pull fuel to save our life. if we prime it by blowing fuel into carb, it will fire up first try, but it wont pull on its on.
we checked the base of the carb and back plate, but cannot find a leak. also tried new fuel hoses, etc.
can anybody give me some ideas as to where to go to next?
i know the motor runs, but without the vacuum, the motor wont pull the fuel.
this thing has stumped me for going on 3 days!
Now I'm the first to admit I'm a newbie here, but I was under the impression these thing don't pull fuel by vacuum, but push it by exhaust pressure? Is your tank lid sealed tight? Any exhaust leaks in the header to engine or header to pipe? I'm certain some more experienced people will come on here and clarify