Cultus 2003 carby jerk problem

[mushi92]

On releasing accelerator, Cultus 2003 is producing jerks on cng and petrol. can anyone tell about this problem?

[mushi92]

Moreover, RPM goes very down when headlight turns on. what will be the issue?

[hassantahir2]

Get the dashpot on Carburetor adjusted that will control the jerk on leaving accelerator pedal.
For headlights there is a vacuum pod on Carburetor for electrical load idle up get that adjusted.

[mushi92]

Where can I find dashpot and vaccum pod for laod adjustment?

[mushi92]

I adjusted white cap speed screw. it effects only race. jerks are same.

[hassantahir2]

If you are facing the car from front then check at the left side of Carburetor you will see two adjustment screws one that is towards firewall that is for dashpot adjustment and the other that is in front is for Electrical load idle adjustment. There would also be a plastic screw at back that is for idle rpm adjustment.

[mushi92]

Are you telling about it?

[hassantahir2]

Yup these screws..
If nothing happens by adjusting these then check the vacuum line's to these pods.
Mostly mechanic's mess with vacuum lines and then they just disconnect them because they don't know how to put them back.

[mushi92]

All vacuum lines are linked together and they have suctions. One more problem I am facing on petrol nowadays. there is a much burnt or unburnt smell from the exhaust.
Kindly give suggestion.

[mohsin_160]

Hello Hassan,
Can you please share where can I find the dashpot on the left side of carburetor?

Regards,
Mohsin

[sajjad76]

Also check ignition timing advance from distributor.

[123rfaa]

i am facing the same issue and the dash pot connected to the electrical screw seems to be not working at all because the screw is tightened to it's last thread still it is not reaching to the pin where it should reach and press or release it.