Marcinek122 wrote: I do not know if I mentioned that there is a manual pear before the fuel filter, with an earlier attempt to pump, the air bubbles moved back and forth did not want to push it.
Pear exactly fulfills the role of an electric primary pump in the tank. It is always present in the engine, if just like your fuel is
sucked from the tank, not
pressed by an additional electric pump.
If, as you say, there are problems with the use of the pear, i.e. it can not be pressed and bled despite intense squeezing, it means at least two possibilities:
1) Leaky low pressure system - most often on quick couplings, at the connection with the tank, fuel filter, also at the pwc entrance and in the filter itself. You may also have a damaged pear. Or more precisely, an internal valve that passes fuel both ways, and should only go one way.
2) Fuel circuit blocked - most often by simply bending the fuel pipe, old, dirty fuel filter cartridge, and also clogged
transfer to the tank.
You can read more about the fuel circuit of your engine in the topic just under consideration
https://www.elektroda.pl/rtvforum/topic3301938.html.
It is generally accepted, when it comes to air in the fuel circuit, that air bubbles up to a diameter of about the same are allowed
3 mm . Unfortunately, the bigger ones indicate the troubles in question. The presence of air in the fuel
slows the build-up of pressure at every point where there are blisters. However, it has no negative effect on the formation of supposedly metal chips.
Such among others a philosophy was presented by a professional mechanic
Transit2 who persistently claimed that the chips are flying to fuel,
because when you dry up your engine for a long time, it must be like that and that's it. To the question
what a miracle this happens, since other engines do not "boast" and also give off swarf , he answered that
he knows because he has a workshop and
KotBury will not tell him here .
Currently, it appeared only on January 6 or 7 in this forum, and to my amazement it no longer claims that the chips are flying from the air, but because of "dry" fuel. So he began to repeat after me what he had previously condemned and ridiculed. What's more, it promotes oil spanking
2T to fuel as a substitute for lubricity. He repeats exactly what I have been saying for many years in various forums, and he mocked it at every turn.
We have such talented professional mechanics, whose knowledge changes with the point of seating ... Of course, some, because everyone will soon offend. And they are very sensitive to their point. End of OFF TOPIC ...
Kitten KotBury2