A water dropping engine can give smoke?
i have some few questions which i have observe and did a experiment, but not sure is that true or not.
my Suzuki Alto 1000cc fuel pump is little bit weak, some times its return fuel line get block.
i want to know,
1:- If fuel return line is block then a car can give smoke?
2:- there was a lot of carbon after smoke in side of the silencer smoke was full dry, no sign of water drop.
3:- Running is excellent, didn't reduce engine oil, i observe daily.
4:- Never give smoke on CNG.
when i start car its start in half self, no any knocking, it also drop water on petrol but didn't notice on CNG.
when i open return fuel line and put the fuel pipe in to a bottle then check the smoke, no any sign of smoke. then start dropping water.
today i also check it again run on petrol it was dropping water, is it a healthy sign for a engine?
i am lil bit worried. plz guide me... waiting for your kind replies.