On cars with “flat” fuel tanks, which are now the absolute majority, you can encounter a typical malfunction, which will be discussed.
… Yesterday, you drove your VAZ 2110 injector and only rejoiced. Suddenly the car became noticeably “dumb”, as if someone or something were slowing it down. The experienced carrier hurries to replace the fuel filter. Having removed the old one, he sees what kind of dirt is there, and in advance anticipates the pleasure of how quickly a car rushes with a new one. But sometimes frustration awaits him - and with the new filter the car remains sluggish.
Why? Most likely, the culprit of the weakness of the engine is a gasoline pump or its filter. This malfunction is easy to detect by measuring the fuel pressure in the ramp. If the needle of the manometer, even at idle, twitches like a promising fishing float, then most likely the fuel pump will have to be removed. However, even if you don’t have a pressure gauge, you still have to get the pump … We hope you are lucky, and a poor fuel supply is not on the “conscience” of a worn gas pump, but just a consequence of severe contamination of the rough filter at the inlet of the gas pump. It is important to understand that if the bottleneck is here, then it restricts the flow, no matter how we clear the “channel” downstream!
On the "top ten" and other currently available VAZ models, the hatch under the rear seat is large enough to access the pump, it is easy to remove the pump. Where it is cramped, it remains to choose the lesser of two evils: either increase the hatch in place without removing the tank, or drain gasoline and remove the tank. The latter, if there is no pit or flyover nearby, is troublesome and, frankly, unsafe. It’s better to enlarge the hatch.
Finally, the pump is removed. Take a closer look at the receiving net - most likely, it looks like in our photo 1. The dirt can be of different colors - yellowish, reddish, black - depending on the “creative imagination” of gas suppliers. Such malfunctions are not directly related to the mileage of the car: you can run into crappy fuel in the first thousands passed.
What to do? First of all, it is useful to know that the intake grids are now sold separately from the gasoline pump (photo 2). But its own will still serve if cleaned. Pry off with a screwdriver and remove. And then a hard (but not metal) brush dipped in carburetor cleaner is used.