hye frens..i have a problem..my wira 4g15 carb year 1996 ....is having a problem....on highway when i try and clock above 130km/h the engine starts to choke and like gona die like dat....this also happens whn car goin on steep hill.....basicly this happens whn the engine is on strain.....pls giv me ur opinions...and i will consider wad to do....thx