Repair of a fuel pump vaz 21093 do-it-yourself injector
In detail: repair of a vaz 21093 fuel pump do-it-yourself injector from a real master for the site my.housecope.com.
I think that many car owners of VAZ 2109-2108 with injection engines are well aware that on such models the gas pump is located not under the hood, as is the case with carburetor cars, but directly in the fuel tank. And getting to it is a little more difficult, since you have to recline the back seat and perform a few more steps. But let's talk about everything below in order.
So, first of all, it should be said about the tool that we need to do this job:
Phillips and flat screwdriver
7 mm deep end head
Ratchet handle
Extension
Open-end wrench 17
First of all, I would like to give a more visual video instruction, which I made just a couple of weeks ago using the example of a dozen. But since there is not much difference, I decided to post it here too.
If suddenly the video clip does not load or other problems have arisen, then below you can consider in more detail, only in the form of a photo report.
When the rear seat was folded down, it is necessary to find a hatch on the floor under the carpet, under which the whole structure is located:
When the bolts have been unscrewed, lift the lid and disconnect the plug, having first bend the latches on it:
Then, using a 17 key, we turn off the fuel pipes, as a result of which the following picture is obtained.
We set aside their side so that they do not interfere with further work. And you can unscrew all the nuts securing the pressure plate in a circle:
Then carefully lift the plate:
After that, prying the gum with a flat screwdriver, we slowly try to take the fuel pump out.
When it rises a little, then further it will need to be tilted about 90 degrees so that the fuel level sensor does not interfere with removal:
Video (click to play).
The price of a new fuel pump for VAZ 2109-2108 injector cars is about 2800 rubles, so it is better to take care of this unit. And in order not to create unnecessary loads and idle work, make sure that there is always more than 5 liters of gasoline in the tank.
VAZ 2109 fuel pump malfunction, types of VAZ gasoline pumps
On the VAZ 2109, signs of a fuel pump malfunction are a complete or partial cessation of the supply of gasoline to the carburetor, this entails the inability to start both a cold and a hot engine, it will start and stall, in addition, unstable idling is possible. If you suspect that the gas pump does not work in the VAZ 2109, then you should check it. It's not hard to do it yourself, just read this article.
Let's immediately consider the two most common types of gasoline pumps "Pekar" and DAAZ. They are installed on both rear-wheel drive cars and front-wheel drive cars. To check the health and functionality of the entire fuel supply system:
We remove the gasoline hose from the outgoing (discharge) fitting of the gasoline pump
Then we press the manual fuel pumping lever several times.
If the vaz fuel pump is working properly, then a powerful jet of fuel should go from the fitting
If there is no stream, or if there is a weak stream, carry out a second check
To check the serviceability of the intake valve:
Disconnect the fuel hose from the pump suction fitting (it turns out now that we have removed both fuel hoses from two fittings)
Then we plug the suction fitting with our finger and press the lever for manual pumping several times
In this case, a vacuum should be felt on your finger (it should suck to the fitting)
When there is a vacuum, it means that the fuel pump is working properly, look for faults in the gas tank or fuel lines
If not, the fuel pump on the VAZ 21093 does not work, remove the pump, disassemble and change the inlet valve
To check the outlet valve for leaks:
Place a finger on the opening of the pressure connection (the one that supplies gasoline to the carburetor), then press the lever for manual priming several times
At the same time, a very noticeable stream of air comes out of the hole of the fitting, it pushes the finger away from the fitting
If the jet is weak or absent, it means that the gas pump on the VAZ 2109 does not pump, then we remove the pump, disassemble and replace the exhaust valve
If the filter is deformed or clogged:
Remove the cover from the fuel pump, take out the fuel filter, clean it, rinse it in gasoline, then blow it with compressed air
If the filter is deformed, then replace it
In the "Pekar" gasoline pump, as well as pumps similar to it, the filter is obtained by unscrewing the suction fitting from the cover, so you do not have to remove the cover itself
In case of malfunctions (leaky, torn) the diaphragm:
A characteristic sign of such a malfunction may be the presence of fuel leaks on the body of the fuel pump or the appearance of a smell of gasoline in the engine oil of the engine. However, these signs may not appear:
Remove the upper part (cover) of the fuel pump housing
Take out his diaphragm assembly
Unscrew the nut on the stem, then remove the diaphragms (there are three in total)
Replace diaphragms with new ones (you will need to purchase a repair kit)
Then put everything back together, the diagram is in the photo below.