Suzuki XL7 V6 2.3 year 2008

Friends, I turn to your help once again.
They brought me a suxçzuki XL7, v6 is a Canadian version.
I arrive with a problem in the address pump, it was laid hard and when accelerating softened.
Do we change the address pump and what do you think ??? Do you have the same problem ... what else should I review?
A friend told me that it could be the zipper that is very regulated? Do you think that can be the problem?
Or should you use any type of special hydraulic liquid? I already tried with a STP liquid, which is transparent and with the typical typical to ....
I await your comments

Good I can advise you something, I work with trucks and I have those problems, usually I have happened that the bomb has an overpressure valve, which is a calibrated spring that breaks
, now if the pump is new and squeal doing the same, the liquid is not the problem, if it is in another safe taller they touched the regulation. Regulating the zipper screw, you must have the closed screw the step then you need more precion when accelerating, previously corroborates, chipped pipes some possible precion leakage

good night.
You could specify if it is a direction site is hydraulic or servoasistido. If it is servoasist, the most likely that the stamps of the hydraulic head of the address box are damaged and have a pressure loss in the box, and is known as the internal counterpressions of the head that in the end by differences of area when accelerating is softened.

Hello, thanks for your answer,
it is a hydraulic address system.
I put a new bomb, started working very well, but soon after it was said again, the disarmament and found the liquid was super hot and the locked valve.
We try to put a new spring but the same thing to get it again after driving it a bit.
I saw that now a little of the liquid came out in the liquid when we drained it to disarm the pump.
What can be causing the valve to be played?
That more can be checked apart from the zipper and the pump.
Eye that we already did a thorough cleaning of ducts and zipper.
Another fact, the valve route, when we take out the pump, is not very easy, that is, it does not resist easily.
I await your news, thank you

Hi Martin, thanks for the answer, I have been waiting for my client to import a new bomb.
We install it and worked well for a while, soon he presented the same problem again.
Everything ends that the valve remains, it is like the spring it has, it does not return it to its position and the liquid begins to heat up and lose viscosity, then the direction is hard again ...
we have reviewed and cleaned the zipper, ducts and etc before placing the new pump, but you see, we return to the beginning, to the same problem.
I appreciate your help ... what else could this problem be causing ???