hey guys..
ok first i was having the green box(advancer+emulator combined)with that one my car usually mixes gas and petrol on conversion..then my mechanic installed separately,the advancer and emulator(now they are black in color,dont exactly know the name)..with these my mixing problem is gone but now my car started taking long self when it is cold or parked for more than a hour..nd if i drive my car on petrol it starts normally even in morning...cng mechanic is insisting that it is fuel pump problem but my engine mechanic is saying that its not fuel pump problem...please help guys..
regards
usman