first of all start convert car on cng..take plas and press each pipe of cng injector going downward to manifold turn by turn compress all 4 and check k kisko press krny se gari k engine ko asr ni prta.......agr apko ye fault mil jata e to pehly us injector ki wire ko check kren loose ya ABCD sbke theek lgy huwe wire k injector sath..ye method hr injector k mechanical fault ko trace krleta e.......ans 2ns component electrical method b lazmi check kren...aik rs 300 ya 400 ka currenr ampere meter len...usy 200OHM resistance pe set kren..and uski 2no wires injectors ki pin sath lgaen and reading should be between 1.1 to 2.2...if above it...it ia faulty....ur new injectos kyunke used milty hain.unhe b lgae begair pehly electric check keen aisy phir lga kr.....iana k ba ye roly hain ..coils ka koi role ni jis missing pe awam roti e..........ur agr kisi k paa gas ka computer scanner hai to uspe BAR pressure 1.95 pe set krwaen.thanks
