A noise problem arises in my santro club 2003, a noise is heard all the time on cng and petrol both from under the hood, when ideling and when driving, but the noise behavior is different on ideling and driving.
IDELING: When Ideling the noise is continuous and upon pressing the accelerator it decreases a little.
DRIVING:When driving in 1st gear the noise is slightly lowered when accelerator pressed a little, in 2nd gear the noise lowered further when the accelerator pressed a little, in 3rd, 4th and 5th gear the noise completely goes OFF when accelerator pressed a little.
What could be the problem? is it associated with Injectors? or something else. the noise is heard inside the cabin as well as to nearby the car in streets and on roads.