[kikks71]

Hi,
I m having problem with my a 170cdi,year 2003.I have air bubles in fuel sistem when engine is cold,after cople of minutes air is not there anymore.But if I turn of engine in that period I have problem to start it again.
I changed fuel pipes,silings(o-rings)filter,some walws....now somebody told me to change pipes betwen injectors????Does anybody have idea how to do that or what other to do,or where on net I can get manual to take injectors out......

tnx

 

[brujobrc]

Before think about if the system have bubles air, I think about your system is not pressurizing. Check it in all circuit between fuel tank, filter, pump pressure, until injector pipe. When the system is pressurized the pressure may be sustain it one time, then return to other circuit to fuel tank. You can measure it with one manometer, it may be about 2 to 3 psi

 

[kikks71]

I can see air in fuel pipes in sistem,
from filter to pump you have plastick pipes
and you can see thry them,and if I turn off
engine in that period I can see how air goes.
That is heppening only in first minits after starting,
then is everything normal.When engine is warm i dont have
any problem,i hotice that when I drowe from garage turn of engine
to close the door and I couldnt start normaly.
I changed all silings and pipes alredy,exept rubber hose betven injectors

tnx for answer

 

[brujobrc]

Fuel filter do you change? it have a retain valve pressure.

 

[kikks71]

yes,i change filter and smal walve wich is on filte
repleced with new and nothing

 

[brujobrc]

Check pressure you can measure it with one manometer, it may be about 2 to 3 psi. If it is goes down not inject.. The air bubble may be go out when the system pressurized..

 

[kikks71]

ok,I will try but i not sure it is that.
I suspect that hose betven injectors is
bad,because as son as engine get little warm
it stopes(air)
I had simular problem before in golf and that was
the problem,maybe that is reason why i stick to that.
Main problem for me is that i hadn t disassemble this engine before
and i m seeking how complicated that is,in my opinion not much
but i want to be sure

anyway thanks,any answer is helpfull

 

[brujobrc]

I not said as was that. Maybe all engines have bubbles. I think if have bubble when the system is pressurized the bubbles goes out. Think something, The fuel system inyect if in a system line fuel come in air.. in other words, to go out fuel, air must be enter. Autopurge

 

[kikks71]

ok,things are standing like this,
I m going on injector hoses and whole
instalation,check and replace and I sent
you info is that helped.
Hopping that I solve problem
tnx