Heavy soot on the inlet valves and the intake manifold is one of the reasons for reducing engine power. Nagar in these areas greatly complicates the filling of cylinders operating with a mixture of the decrease in cross-section inlets. On engines equipped with distributed injection gasoline fuel mixture is fed directly to the inlet valve, bypassing all the way through the intake manifold from the carburetor to the combustion chamber. And just this fact alone greatly increases the power and speed of promotion engine. In multi-point fuel injection systems intake manifold is a "dry", that is, the collector moves only air and fuel is fed directly to the nozzle inlet valve. On the carburetor engine petrol, getting into a hot exhaust manifold, partially converted to steam and vacuum under the influence of more or less evenly fills the cylinders of the working mixture. Therefore, the formation of the collector and the carbon on the valves makes it difficult to pass the working mixture. On top of that snuff has a heat insulation properties and it aggravates the formation of benzoparovozdushnoy fraction. A large number of soot can reduce engine power by 30 - 40%. Rapid formation of carbon deposits in the reservoir and the inlet valves is favored short trips to the motor is cold, the work of the crankcase ventilation, faulty valve stem seals on the valves, long-term operation of the car with a clogged catalyst, rough surface of the inner channels of the intake manifold, the poor quality of gasoline. All this, together or separately, facilitating the rapid formation of soot. To effectively clean the intake system should be removed from the engine cylinder head and by removing it from the intake manifold by removing the valve, a thorough cleaning of all channels. After removal of the sludge is recommended abraded with sandpaper internal channels the intake manifold and heads for maximum smoothing of rough edges on the metal surface. The best result will be polishing the polished surface. Intake valves also be cleaned, sanded and grinding to their saddles. As you can see, this job has nothing to do with repairing the carburetor, but the effectiveness of the result, it can be compared with a well designed engine overhaul. Playfulness of your motor will exceed all expectations. This service auto repair shop can advertise separately in addition to repairing the carburetor and ignition system. On the cars, "Ford Serra" with motors ONS operation clean intake tract can be performed without removing the cylinder head. Just want to detach the intake manifold and valve will be clearly visible and accessible for cleaning in the order of the cylinders - 1-3-4-2. Ready to be cleaned only after you install the cylinder in the position of TDC in the compression stroke, when both valves are securely closed. Cleaning is performed using scrapers, solvents, and air compressor. On some cars of domestic production in the manufacture of Cast intake manifold forms shown remarkable negligence. Inside the intake manifold of channels you can sometimes see very high transverse septum, the remnants of casting of irregular shape, which significantly impede filling of the cylinders of the working mixture. This outrage can be seen, particularly in automobiles, "Tavria" and "Moskvich" last years of release. These obstacles are in the collector are easy to remove with a file and fine chisel. There are easier and cheaper way to clean carbon deposits from intake tract with the use of chemical additives to gasoline. Additive, designed for a certain number of gallons of gasoline, poured into the fuel tank. The cleaning process extends the time necessary to burn the entire volume of gasoline. After pouring the additive into the tank to travel without refueling, so as not to dilute the fresh ready-made gasoline concentration. With this method of treatment effect does not appear immediately as additives are designed for 40 - 60 - 80 liters of gasoline. The only unpleasant side of such washing is the lack of a reliable guarantee of the effectiveness of the package you purchased. Now very widespread counterfeiting of such products.
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