i have corolla 2009 (1.3) and have installed cng 3 months back, around a month ago when i was on road car got off sudenly and braking etc all went in off mode, and car was not starting (it gave a sound from engine and some smoke) after checking engine i figured out that main inlet pipe came out , i fixed it with hand n car started. this happened again after two weeks and another friedn of one experienced this too on his car. when he went to toyota they told that its coz of cng not coz of bad quality pipe, cng back fires and if tat pipe doesnt get out it may have damaged some thing else.
please advice wat is this issue?? any bdy else has faced this?? and what should be done??