I think i have resolved the issue. read below and tell me whether i was doing right or wrong. and did problem solved or not.
i examined the lines. from tank one pipe was coming to fuel filter. from fuel filter there was one pipe going to fuel pump. from fuel pump there were two pipes going out. one i thnk back to tank. 2 toward the electric solenoid typre thing. and from that thing there was a pipe coming to carbeurator. now i experimented.
1.first of all removed fuel filter. attached another pipe to the pipe coming from tank and tried to suck. NO PETROL WAS COMING. which once again made me feel that lines are blocked.
- brought a new filter. attached it to the pipe coming from tank and then sucked again. i was thnking that might be there is some more pressure generated in fuel filter so it might work. and again. NO PETROL WAS COMING.
3 connected other end of fuel filter pipe to fuel pump and remove the pipe from pump which was going to solenoid. and attached another spare pipe that has a bottle on the other side. so that if petrol comes out, it should not drop on engine. now turned on the ignition and pump the race pedal. fuel started coming to bottle.
again connected the pipe back to solenoid. and turn the throttle body or watever it is (in which the race wire is inserted) turned on the ignition and pump the pedal and then again check but carbeurator was whole empty. means from pump the fuel isnt coming to carby.
removed the pipe from solenoid and put it direct to fuel pump. .... gave ignition......... and car started. now i can see fuel coming in and out of fuel filter going towards fuel pump.
left car for about 15 mintues. while i was getting ready for jummah prayer. it was working fine. after jummah checked again. car started on half self. take a round. but didnt get the courage to take it to office. as still had the nightmares of last night.
Now tell me kindly what is the problem. that solenoid is faulty or lines of petrol.