I need Argent Help

I have Octavia 2008 Model Petrol ,fuel Pump have been Replaced 5 Time during 18 months

This Problem Started when Engine make (cut off) in hot climate of Saudi Arabia (about 2 hours Heavy Use)

All Fuel Pumps Have been replaced By Skoda Local Agent in K.S.A. ,Using Genuine Parts.

They did not Discovered the Reason until Date.

Signs:-

Every Time Before Fuel Pump Pressure Become Weak I hear a Voice seams Like interval Pulses under Back Seat ,the Same Location of Fuel Pump,this Voice raise when I Stop the Car after about 2 hours working.

When I hear this Voice ,I Open the Fuel Tank Cover ,found too much vapor escape from the cap when just try to open

Means i have high pressure inside fuel Tank.

Some Body Say that is for One of 3 Reasons:-

1- Bad Fuel Grade ( that is Wrong because I am Using 95 octane petrol ,it is very pure in K.S.A. ).

2- Evaporation system for fuel Tank ( Canister Valve -Solenoid Valve-Evaluation Pipes)

They -(Local Agent) Safari Motors - do not Know any of this Information or where are these items Located in the Car.

3- Fuel Pressure Regulator Valve ,(where is it,s Location inside the Car) No Body Know from This Dam Agent Store.

Do Any Body has any Information May Help me.

First thing is it needs to be plugged into diagnostic system and the codes read, that will give an idea of what is going on with fuel pressures etc, and may point to an issue somewhere else. The fact that they have replaced it 5 times says to me that there is 100% a problem somewhere else in the system, be it high fuel pressure in the fuel rail, or an external contaminant in the fuel (have they tested the fuel in the tank for impurities?) either way there is something else causing your failures, it's not going to be the pump that is at fault, not after 5 of them on the same car, the odds are against it.

I need Argent Help I have Octavia 2008 Model Petrol ,fuel Pump have been Replaced 5 Time during 18 months This Problem Started when Engine make (cut off) in hot climate of Saudi Arabia (about 2 hours Heavy Use) All Fuel Pumps Have been replaced By Skoda Local Agent in K.S.A. ,Using Genuine Parts. They did not Discovered the Reason until Date. Signs:- Every Time Before Fuel Pump Pressure Become Weak I hear a Voice seams Like interval Pulses under Back Seat ,the Same Location of Fuel Pump,this Voice raise when I Stop the Car after about 2 hours working. When I hear this Voice ,I Open the Fuel Tank Cover ,found too much vapor escape from the cap when just try to open Means i have high pressure inside fuel Tank. Some Body Say that is for One of 3 Reasons:- 1- Bad Fuel Grade ( that is Wrong because I am Using 95 octane petrol ,it is very pure in K.S.A. ). 2- Evaporation system for fuel Tank ( Canister Valve -Solenoid Valve-Evaluation Pipes) They -(Local Agent) Safari Motors - do not Know any of this Information or where are these items Located in the Car. 3- Fuel Pressure Regulator Valve ,(where is it,s Location inside the Car) No Body Know from This Dam Agent Store. Do Any Body has any Information May Help me.

Is the fuel pressure regulation maybe done at the fuel filter, which is probably near to the tank under the car.  If the filter has two hose connections at one end, both going to the tank, and one at the other end, going forward to the engine bay, then the fuel pressure is being regulated there.

 

I think excessive blockage of the filter will put extra stress on the pump.

 

I'm not sure that yours will be like this, but this is the system I'm talking about:

 

Edited 14 July, 20169 yr by Wino

First thing is it needs to be plugged into diagnostic system and the codes read, that will give an idea of what is going on with fuel pressures etc, and may point to an issue somewhere else. The fact that they have replaced it 5 times says to me that there is 100% a problem somewhere else in the system, be it high fuel pressure in the fuel rail, or an external contaminant in the fuel (have they tested the fuel in the tank for impurities?) either way there is something else causing your failures, it's not going to be the pump that is at fault, not after 5 of them on the same car, the odds are against it.

They Connected my Car to Diagnostic System But No Indications found -that  was what they inform me

Regarding the Tank Cleaning they did

and the filter when replaced found has no Impurities inside.

I am thinking the fault not in fuel circle

It Maybe in Evapuration system to the tank

Question :Do the Canister Charcole Valve or Breath Valve ,or any of EVAP Sestem Failure .Can Cause High Pressure inside the Tank then after a period make Filure in Fuel Pump?

Is it Possible?

Her you are the Correspondances &Reports between Skoda Auto and K.S.A..Local Agent

 

Low-pressure fuel pump (tank)  WE HAVE FOUND OUT THE CAR WHEN COLD START THE FUEL PUMP GAUGE RICH ON SPECIFIED PRESSURE AROUND 4 BARS,AFTER THE 2HRS OF ENGINE RUNNING SLOWLY DECREASE THE PRESSURE FROM SPECIFIED PRESSURE TO 2.5 BARS PRESSURE AND FLUCTUATING. Preliminary information to dealer: -- Communication history Charlie Dullas, SA42801C Level 1 2016-05-31 13:45:43 WE HAVE FOUND OUT THE CAR WHEN COLD START THE FUEL PUMP GAUGE RICH ON SPECIFIED PRESSURE AROUND 4 BARS,AFTER THE 2HRS OF ENGINE RUNNING SLOWLY DECREASE THE PRESSURE FROM SPECIFIED PRESSURE TO 2.5 BARS PRESSURE AND FLUCTUATING.

 

charlie dullas, SAIM4280 Level 3 2016-05-31 16:55:09 Good morning Sir, Please attend for this subject issue, we have already third times replace the fuel pump with the part number 1K0919051AP after a while of using the car repeatedly the cause always the same a side from the fault store the fuel pressure is low at only 2 bars and this is very low compare to specified pressure value , now the customer back with same complain for the 4rth times temporary we fix again the new fuel pump with same part number to use his car, Please give us advice to find out how to resolve the issue, thanks regards charlie

 

Dear sir, replace the fuel filter - check for correct connection of a filter and check the pressure, please give me feedback, thank you and best regards Zdeněk charlie dullas, SAIM4280 Level 3 2016-06-02 09:09:46 Dear Sir, that time we replace the fuel pump, including the fuel filter, that was from the last time weve replaced, and the costumer came back with same complaint cut off, and the report attach it's for here, now to be satisfy we again replace the fuel pump with same part number and fuel filter roadtest for 2hrs orderly the pressure is fine and keep always on specified value, we don't know after a certain period of time using the car and maybe again same problem like what haappen was, hopefully not, because this was for the 4rt times replace. for your information, kindly inform the spare parts fuel pump part no. 1K0919051AP fix in this car are always weakned while long used the car in just a few months. thanks and regards charlie Zdeněk Kuntoš, CZSKPST Level 1 2016-06-02 14:39:18 You have a right fuel filter (4 Bar for MPI engines)? charlie dullas, SAIM4280 Level 3 2016-06-02 16:08:08 Dear Sir, we are using fuel filter 4 bar spare parts No. 6Q0201051J for MPI engines Zdeněk Kuntoš, CZSKPST Level 1 2016-06-03 07:53:24 Dear sir, thank you, please check right connection of the venting of the crankcase and a negative pressure line (will be easier if I write the numbers of parts for checking: 06A103217G; 1K0129684AE; 1K0612041BJ), regards Zdeněk

Is the fuel pressure regulation maybe done at the fuel filter, which is probably near to the tank under the car.  If the filter has two hose connections at one end, both going to the tank, and one at the other end, going forward to the engine bay, then the fuel pressure is being regulated there.

 

I think excessive blockage of the filter will put extra stress on the pump.

 

I'm not sure that yours will be like this, but this is the system I'm talking about:

 

I Think this is my replaced filter ,

Hey Guys no body has an idea