If in a car, with an engine warm to optimal operating temperature, failures occur when you press the gas pedal at the start, first of all, you should pay attention to the operation of the accelerating pump of the engine carburetor.
It is necessary to unscrew 4 fasteners of the acceleration pump and remove the top cover from it. Under this lid is the pump diaphragm. In the process of operation, the diaphragm becomes unusable, dry out, and is covered with small cracks, which provokes the failures of the engine speed at the start. If, after a visual inspection, you will find that the diaphragm is in a similar technical condition, it is subject to mandatory replacement.
Repair sets of carburetor are sold, which include the acceleration pump diaphragm. Before installing it, be sure to check not only its condition, but also, and the work of the central spring, which should be to the best of hard. Then, on the inside, to prevent fuel leakage, a sealing gasket made of thick paper is laid under the diaphragm.
After that, place the new diaphragm along with the gasket on the unscrewed cover of the acceleration pump of the carburetor, insert the screws into the fasteners, carefully install the lid in the regular place, not forgetting to first install the spring, and tightly tighten the screws. When screwing up, note that the broom does not form on the edges of the diaphragm. Then, you need to remove the gap (in the case of its formation) between the heel of the throttle drive and the lever of the accelerator carburetor pump. If necessary, bother the lever with pliers. After that, start the car and check the work of its carburetor in action. Failures at the start should disappear.
And the installation of auto -sound in your car should be carried out only by professionals.
We wish you good luck.